NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes complaints
149 reportsClear category filter48,989 miles · Apr 20, 2018
Electronic Stability Control (esc)Service BrakesUnknown Or Other
MY VEHICLE HAS EXHIBITED A KNOCKING NOISE ON THE LEFT DRIVER SIDE TIRE, PROBLEMS WITH VIBRATION AT HIGH SPEEDS, ENGINE LIGHT COMING ON IF DRIVING HIGHWAY SPEEDS, BRAKE ISSUES, BRAKES BECOME STIFF AND WILL NOT STOP VEHICLE WHATSOEVER! AT BOTH THIS HAPPENED TWICE WHILE MY CAR WAS IN MOTION NEARLY KILLING ME AND MY KIDS!!! AIR COND…
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MY VEHICLE HAS EXHIBITED A KNOCKING NOISE ON THE LEFT DRIVER SIDE TIRE, PROBLEMS WITH VIBRATION AT HIGH SPEEDS, ENGINE LIGHT COMING ON IF DRIVING HIGHWAY SPEEDS, BRAKE ISSUES, BRAKES BECOME STIFF AND WILL NOT STOP VEHICLE WHATSOEVER! AT BOTH THIS HAPPENED TWICE WHILE MY CAR WAS IN MOTION NEARLY KILLING ME AND MY KIDS!!! AIR CONDITIONING ISSUES AS WELL. BLOWS HOT AIR UNTIL YOU PLAY WITH BOTTOMS.
NHTSA ODI #11089173
62,000 miles · Apr 13, 2018
Service BrakesSuspension
IN OCTOBER 2017 WE EXPERIENCED BRIEF PERIODS WHERE BRAKE PEDAL BECAME RIGID AND IMPOSSIBLE TO DEPRESS. THE VEHICLE WAS TAKEN TO OUR LOCAL CHEVROLET DEALER. WE DESCRIBED IN DETAIL THE RIGID BRAKE PEDAL. THE DEALER WANTED TO DO PUT NEW BRAKE PADS AND TURN THE ROTORS. I THOUGHT IT WAS STRANGE THAT A VEHICLE WITH JUST OVER 40 THOUSA…
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IN OCTOBER 2017 WE EXPERIENCED BRIEF PERIODS WHERE BRAKE PEDAL BECAME RIGID AND IMPOSSIBLE TO DEPRESS. THE VEHICLE WAS TAKEN TO OUR LOCAL CHEVROLET DEALER. WE DESCRIBED IN DETAIL THE RIGID BRAKE PEDAL. THE DEALER WANTED TO DO PUT NEW BRAKE PADS AND TURN THE ROTORS. I THOUGHT IT WAS STRANGE THAT A VEHICLE WITH JUST OVER 40 THOUSAND MILES WOULD NEED NEW BRAKES, BUT WE HAD THE WORK DONE. THE DEALER ALSO WANTED TO REPLACE THE VACUUM HOSE WHICH POWERS THE BRAKE SYSTEM. THIS WORK WAS ALSO DONE. NEXT, ON FRIDAY MARCH 23, 2018 WE WERE TRAVELING ON AN INTERSTATE AT A HIGH SPEED WHEN THE BRAKE PEDAL BECAME IMPOSSIBLE TO DEPRESS. WE WERE VERY FORTUNATE NOT TO CAUSE A SERIOUS ACCIDENT. I HAD TO HAVE IT TOWED TO A DEALER AND RENT A CAR. THE FOLLOWING WEEK WE WERE CONTACTED BY THE DEALER DOING THE REPAIRS. OUR SUBURBAN HAD A VACUUM PUMP FAILURE. THIS CAUSED TOTAL BRAKE FAILURE. AFTER SOME RESEARCH I DISCOVERED THAT THIS VEHICLE'S ENGINE DOES NOT PRODUCE ENOUGH VACUUM TO POWER THE BRAKES (UNLIKE EVERY OTHER VEHICLE ON THE ROAD). IN ANY OTHER CAR THE ONLY WAY YOU LOSE SUCTION FOR YOUR BRAKES IS IF THE ENGINE STOPS. IN OUR SUBURBAN THE ENGINE CAN BE RUNNING FINE AND YOU MAY OR MAY NOT HAVE BRAKES. THE WARNING SYSTEM IS TOTALLY USELESS AS IT ISN'T TRIGGERED UNTIL YOU EXPERIENCE TOTAL BRAKE FAILURE WITHOUT ANY WARNING. WHILE THE VEHICLE WAS IN THE SERVICE DEPARTMENT HAVING VACUUM PUMP REPLACED THE DEALER ALSO EXPLAINED THAT ALL FOUR MAGNETIC RIDE SHOCKS/STRUTS WERE LOCKED IN PLACE AND NOT FUNCTIONING AT ALL. THIS IS ANOTHER SERIOUS SAFETY ISSUE. I HAVE NEVER HEARD OF SHOCKS "LOCKING UP" . AFTER SOME MORE RESEARCH, I FOUND THIS IS A HUGE PROBLEM FOR GM VEHICLES. A PROBLEM THAT GM HAS FAILED TO ADDRESS. I HAVE ALSO HAD 3 MAJOR REPAIRS ON AC. INCLUDING NE AC LINES AND NEW COMPRESSOR.
NHTSA ODI #11084934
59,000 miles · Mar 27, 2018
Service Brakes
PLACING CAR IN REVERSE OR DRIVE AT SLOW SPEEDS AND PRESSING BRAKES ALL THE WAY TO THE FLOOR WITH THE VEHICLE NOT STOPPING. BRAKE SYSTEM WARNING LIGHT WOULD COME ON. ISSUE COMES AND GOES WHEN IT PLEASES. TAKING THE SUBURBAN TO DEALERSHIP TODAY. STARTED HAPPENING AROUND 59000 MILES
NHTSA ODI #11081459
48,000 miles · Feb 8, 2018
Service Brakes
ISSUE REGARDING BRAKING SYSTEM AND INTERNAL FAILURE. COST TO REPAIR IS $1500 ON A 3 YEAR OLD CAR. GM HAS BEEN AWARE OF THIS ISSUE SINCE 2015. THEY ARE ALSO DEFENDANTS IN A CLASS ACTION LAWSUIT REGARDING THE BRAKES AND THE CATASTROPHIC FAILURE THAT WILL EVENTUALLY RESULT IN DEATH.
NHTSA ODI #11071772
61,000 miles · Jan 5, 2018
Service Brakes
AS WE WERE DRIVING FROM ATLANTA TO MIAMI, WHEN WE WERE GETTING OFF THE HIGHWAY THE BRAKES ON OUR 2015 CHEVROLET SUBURBAN FAILED TO STOP AT 60 MILES PER HOUR, WE ALMOST REARED-ENDED AN EIGHTEEN-WHEELER; WITH OUR FAMILY OF FIVE AND OUR TWO DOGS ON BOARD! ALL FLUIDS HAD BEEN CHECKED ON THE CAR AND THE BRAKE PADS WERE RECENTLY CHAN…
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AS WE WERE DRIVING FROM ATLANTA TO MIAMI, WHEN WE WERE GETTING OFF THE HIGHWAY THE BRAKES ON OUR 2015 CHEVROLET SUBURBAN FAILED TO STOP AT 60 MILES PER HOUR, WE ALMOST REARED-ENDED AN EIGHTEEN-WHEELER; WITH OUR FAMILY OF FIVE AND OUR TWO DOGS ON BOARD! ALL FLUIDS HAD BEEN CHECKED ON THE CAR AND THE BRAKE PADS WERE RECENTLY CHANGED. WE JUST CALLED AND NOTIFIED CHEVROLET ABOUT THIS SAFETY ISSUE. WE ASKED IF THERE WERE ANY ISSUES AND/OR RECALLS ON OUR VEHICLE AND THE AGENT SAID THAT THERE WERE NO ISSUES OR RECALLS REGARDING THIS TYPE OF VEHICLE. WE MADE AN APPOINTMENT TO HAVE OUR CAR DIAGNOSED AS SOON AS POSSIBLE. AFTER RESEARCHING ONLINE WE FOUND NUMEROUS POSTS ON SEVERAL SITES FROM OTHER SUBURBAN OWNERS REPORTING THE SAME ISSUE WITH THEIR BRAKING SYSTEM NOT RESPONDING. WHAT WILL IT TAKE FOR CHEVROLET TO ACKNOWLEDGE THIS BRAKE FAILURE SYSTEM ISSUE?!?! SOMEONE TO GET KILLED?!?! PLEASE LOOK INTO THIS BRAKE FAILURE ISSUE AND ADDRESS IT PROMPTLY!!!
NHTSA ODI #11060689
62,100 miles · Dec 26, 2017
Service Brakes
WHILE TRAVELING STRAIGHT AT 70 MPH ON THE HIGHWAY IN MY 2015 CHEVY SUBURBAN (62K MILES) THE VEHICLE EXPERIENCED A SUDDEN AND UNDETECTED COMPLETE BRAKE SYSTEM FAILURE. AS I APPROACHED SLOWING TRAFFIC WITH THE CRUISE CONTROL ON, I TAPPED THE BRAKES TO DISENGAGE THE CRUISE CONTROL, ONLY TO FIND THAT THE BRAKE PEDAL WAS RIGID AND C…
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WHILE TRAVELING STRAIGHT AT 70 MPH ON THE HIGHWAY IN MY 2015 CHEVY SUBURBAN (62K MILES) THE VEHICLE EXPERIENCED A SUDDEN AND UNDETECTED COMPLETE BRAKE SYSTEM FAILURE. AS I APPROACHED SLOWING TRAFFIC WITH THE CRUISE CONTROL ON, I TAPPED THE BRAKES TO DISENGAGE THE CRUISE CONTROL, ONLY TO FIND THAT THE BRAKE PEDAL WAS RIGID AND COULD NOT BE DEPRESSED. TO AVOID A COLLISION AT A HIGH RATE OF SPEED I SWERVED ONTO THE RIGHT SHOULDER WHILE USING TWO LEGS TO AGGRESSIVELY PUSH THE BRAKE PEDAL DOWN - ALL THE WHILE FEELING VERY LITTLE BRAKING ACTION. THE CAR CAME TO A STOP AFTER ABOUT 75 METERS. AT NO TIME BEFORE OR DURING THE EVENT DID THE CAR SIGNAL A BRAKING SYSTEM PROBLEM. IN FACT IT STILL SHOWED NO SYSTEM INDICATOR OF A BRAKE PROBLEM 3 DAYS LATER WHEN IT WAS DELIVERED TO THE DEALER FOR DIAGNOSIS. THE CAR HAS BEEN WELL MAINTAINED, HAVING JUST UNDERGONE A 60K MILE SERVICE AT THE DEALERSHIP. THE LACK OF THE VEHICLE'S RECOGNITION THAT A CRITICAL FAILURE IN THE BRAKING SYSTEM HAD OCCURRED POSED A SERIOUS AND IMMEDIATE THREAT TO PASSENGERS AND SURROUNDING TRAFFIC. AS A PHYSICIAN I CAN ATTEST THAT A COLLISION AT THAT SPEED WOULD HAVE SEVERELY INJURED OR EVEN KILLED THOSE INVOLVED. THIS PROBLEM WITH THE 2015 CHEVY SUB HAS REPORTED TO NHTSA BEFORE - THIS IS NOT AN ISOLATED EVENT. THE SERVICE CENTER REPORTED TO ME THAT A VACUUM PUMP FAILURE WAS TO BLAME - I BELIEVE THIS IS A MORE COMPLEX ENGINEERING PROBLEM IN THAT THE VEHICLE DID NOT DETECT A PROBLEM DESPITE THE FAILURE CREATING A LIFE THREATENING SCENARIO. ALTHOUGH I PLAN TO IMMEDIATELY DISPOSE OF THIS CAR, FAILURE TO ADDRESS THIS PROBLEM BY THE MANUFACTURER WILL PUT OTHERS AT RISK IN THE FUTURE. GM APPEARS TO HAVE ISSUED A SERVICE BULLETIN THAT REFERS TO THIS PROBLEM (ATTACHED). I SINCERELY BELIEVE THIS DEFECT WILL RESULT IN LIVES LOST IF LEFT UNADDRESSED. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #11056635
80,000 miles · Dec 24, 2017
Service Brakes
MY 2015 SUBURBAN WITH APPROX 80K MILES, STARTED HAVING BRAKE PROBLEMS WHEN I WOULD DRIVE IN REVERSE. THE BRAKES HAD A GRINDING NOISE AND WAS GETTING HARD TO PRESS. THE BRAKE PADS WERE REPLACED AROUND 46K MILES AS I BOUGHT THE VEHICLE USED FROM ENTERPRISE SALES. THE BRAKES EVENTUALLY GOT WORSE AND HAD THE BRAKE ASSIST MESSAGE ON …
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MY 2015 SUBURBAN WITH APPROX 80K MILES, STARTED HAVING BRAKE PROBLEMS WHEN I WOULD DRIVE IN REVERSE. THE BRAKES HAD A GRINDING NOISE AND WAS GETTING HARD TO PRESS. THE BRAKE PADS WERE REPLACED AROUND 46K MILES AS I BOUGHT THE VEHICLE USED FROM ENTERPRISE SALES. THE BRAKES EVENTUALLY GOT WORSE AND HAD THE BRAKE ASSIST MESSAGE ON DASH COME UP. IF I HAD TO USE THE BRAKES TOO MANY TIMES AT INE TIME LIKE IF I HAD TO GO OVER SPEED BUMPS IN MY NEIGHBORHOOD, THEN THE BRAKES WOULD BE EXTREMELY HARD AND WOULD LOSE ALL POWER BRAKES. IF I KEPT THE VACUUM UP WITH A LITTLE RPM'S- ONE FOOT ON THE BRAKE AND ONE ON THE GAS, THEN I COULD GET THE POWER BRAKES TO WORK. NOW IT'S JUST TOTALLY GONE. NO POWER BRAKES AT ALL NOW AND ORDERED THE VACUUM BOOSTER AND WILL REPLACE IT MYSELF. I CALLED THE MAIN CHEVROLET HOTLINE AND THEY WERE TOTALLY WORTHLESS. I TOLD THEM ABOUT ALL THE NUMEROUS COMPLAINTS POPPING UP ON THE INTERNET AND WITH SUBURBANS WITH MUCH LESS MILES THAN MINE AND TRIED TO SEE IF THEY HAD ANY RECALLS REGARDING THE BRAKES. THEY SAID NO. I SAID THEY SHOULD BE CONCERNED BEFORE IT ENDS UP KILLING SOMEONE.
NHTSA ODI #11056319
100,000 miles · Dec 13, 2017
Service BrakesVehicle Speed Control
TL* THE CONTACT OWNS A 2015 CHEVROLET SUBURBAN. WHILE DRIVING APPROXIMATELY 40 MPH, THE CONTACT ATTEMPTED TO APPLY THE BRAKES AND THE BRAKE PEDAL WOULD NOT DEPRESS. THE CONTACT HAD TO APPLY THE EMERGENCY BRAKE TO GET THE VEHICLE TO STOP. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE VEHICLE WAS DRIVEN TO AN INDEPENDENT MECHANIC W…
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TL* THE CONTACT OWNS A 2015 CHEVROLET SUBURBAN. WHILE DRIVING APPROXIMATELY 40 MPH, THE CONTACT ATTEMPTED TO APPLY THE BRAKES AND THE BRAKE PEDAL WOULD NOT DEPRESS. THE CONTACT HAD TO APPLY THE EMERGENCY BRAKE TO GET THE VEHICLE TO STOP. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE VEHICLE WAS DRIVEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE MASTER BRAKE CYLINDER AND BRAKE BOOSTER FAILED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 100,000.
NHTSA ODI #11054565
Mileage unknown · Nov 23, 2017
EngineService Brakes
PURCHASED SUBURBAN FROM ALM IN UNION CITY ON 10/05/17 ON 11/04/17 THE BRAKES STARTED TO MAKE NOISE WHEN COMING TO A STOP. ON 11/06 THE BRAKES WERE MAKING ALOUD SCRUBBING SOUND WHEN STOPPING HAD TO GET BRAKES DONE AND WHEN THE MECHANIC SAW THE ROTORS THEY WERE RUSTED AND ALSO NEEDED TO BE CHANGED BUT HE COULDN'T DUE TO THE CONDIT…
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PURCHASED SUBURBAN FROM ALM IN UNION CITY ON 10/05/17 ON 11/04/17 THE BRAKES STARTED TO MAKE NOISE WHEN COMING TO A STOP. ON 11/06 THE BRAKES WERE MAKING ALOUD SCRUBBING SOUND WHEN STOPPING HAD TO GET BRAKES DONE AND WHEN THE MECHANIC SAW THE ROTORS THEY WERE RUSTED AND ALSO NEEDED TO BE CHANGED BUT HE COULDN'T DUE TO THE CONDITION THEY WERE IN MADE IT IMPOSSIBLE RETURNED TO ALM ON 11/7 FOR THEM TO DO THE I OWE WORK AND I WAS TOLD THEY WOULD CHECK THE ROTORS IT NEVER HAPPENED AND WAS THERE FROM 10AM TIL 7 PM. I SPOKE WITH THE SERVICE MANGER AND HE WAS GOING TO CALL BACK TO SET UP ANOTHER APPOINTMENT. ON 11/9 THE ENGINE OIL LIGHT CAME ON SAYING ENGINE OIL LOW ADD OIL 48% REMAINING. PUT A QUART IN AND MADE APPOINTMENT AT SUPERIOR CHEV TO HAVE OIL CHANGED. AT THAT TIME THE TECHNICIAN SAID THERE WERE QUITE A FEW RECALLS SO JUST MAKE ANOTHER APPOINTMENT AND HAVE OIL CHANGE AND RECALLS DONE HOWEVER HE PROCEED TO CHECK THE OIL AND EVEN WITH THE QUART ADDED THE DIPSTICK CAME BACK DRY. SHOCKED NOT WANTING TO BELIEVE THAT ALM HAD NOT ONLY FAIL TO FIX THE BRAKES THEY DIDN'T EVEN CHANGE THE OIL, BRAKES ARE A SAFETY ISSUE CARS GO THROUGH A PID AND THINGS OF THIS NATURE ARE CORRECTED BEFORE PUTTING INTO INVENTORY. MY FAMILY AND I COULD HAVE BEEN SERIOUSLY HURT DUE TO THE NEGLIGENCE OF ALM. I HAD NOT EVEN REACH THE FIRST PAYMENT AND ALL THIS HAPPENING. AND THE SERVICE MANAGER NEVER CALLED BACK . I HOPE THAT ATLANTA LUXURY MOTORS WILL BE INVESTIGATED ABOUT WHAT THEY DO PRIOR TO PUTTING CARS IN THEIR INVENTORY AND PEOPLE COME IN TRUSTING THAT THEY ARE SAFE WHEN FINANCING A AUTOMOBILE AND HAVE TO PAY 5YRS ON AND IT STARTS OFF WITH SAFETY ISSUES. THERE IS NO WAY THEY COULD HAVE DONE PID OR THEY DID AND JUST IGNORED WHAT THEY SAW. I REALIZE THE SUBURBAN WAS USED BUT SAFETY SHOULD BE A CONCERN OF THE SELLER AS WELL AS THE BUYER.
NHTSA ODI #11048173
62,000 miles · Nov 17, 2017
Electronic Stability Control (esc)Service BrakesSteering
WHILE DRIVING DOWN THE HIGHWAY THE STEERING LOCKS UP THE BRAKES GO TO THE FLOOR AND THE STABILITRAC LIGHT AND BRAKE LIGHT COMES ON! WE HAD AT MARTIN CHEVROLET IN CLEVELAND TEXAS IN FEBRUARY OF 2017 AND IT'S BACK THERE NOW! THEY REPLACED THE FUSE BOX LAST TIME AND THEY CAN'T FIGURE OUT WHAT IT IS NOW!
NHTSA ODI #11046929
Official recalls
11May 7, 2026
General Motors, LLC (GM) is recalling certain 2026 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles with four-wheel (4WD) or all-wheel drive (AWD), and certain 2015-2020 Suburban, Escalade, Escalade ESV, Yukon, Yukon XL, and Tahoe vehicles. A component missing from the drivetrain transfer case may cause the front and/or rear wheels to lock up without warning to the driver.
Consequence & remedy
Consequence: Front or rear wheel lockup increases the risk of a crash.
Remedy: Owners are advised not to drive their vehicle until the remedy is completed. Dealers will inspect and, if necessary, replace the transfer case assembly, free of charge. Owner notification letters were mailed May 18, 2026. Owners may contact GMC customer service at 1-800-462-8782, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-333-4223. GM's number for this recall is N262557620. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on May 7, 2026.
Oct 24, 2019
General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
Consequence & remedy
Consequence: Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the vehicle to pull to one side unexpectedly, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192261050.
Additional source detail variants (3)
Service Brakes
General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
Consequence: Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the vehicle to pull to one side unexpectedly, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192261050.
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:wheel Speed Sensor/tone Ring
General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
Consequence: Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the vehicle to pull to one side unexpectedly, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192261050.
Electronic Stability Control (esc)
General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
Consequence: Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the vehicle to pull to one side unexpectedly, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192261050.
Sep 6, 2019
General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The amount of vacuum created by the vacuum pump may decrease over time.
Consequence & remedy
Consequence: As the vacuum level drops, the brake assist decreases, increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began October 8, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192268490.
Sep 7, 2018
General Motors LLC (GM) is recalling certain 2015 Chevrolet Silverado 1500, Tahoe and Suburban, GMC Sierra 1500 and Yukon, and Cadillac Escalade vehicles. Electric power steering (EPS) assist may be lost momentarily, followed by a sudden return of EPS assist.
Consequence & remedy
Consequence: If EPS assist is lost and then suddenly returns, the driver may have difficulty steering the vehicle, especially at low speeds, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will update the EPS module software, free of charge. The recall began October 12, 2018. Owners may contact Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020 and GMC customer service at 1-800-462-8782. GM's number for this recall is 18289.
Jul 10, 2017
General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence & remedy
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on August 4, 2017. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 17287.
Additional source detail variants (3)
Seat Belts:pretensioner
General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on August 4, 2017. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 17287.
Air Bags:frontal:sensor/control MODULE-INACTIVE
General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on August 4, 2017. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 17287.
Air Bags:frontal
General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on August 4, 2017. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 17287.
Sep 8, 2016
General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence & remedy
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on October 13, 2016. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16007.
Additional source detail variants (3)
Seat Belts:pretensioner
General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on October 13, 2016. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16007.
Air Bags:frontal:sensor/control MODULE-INACTIVE
General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on October 13, 2016. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16007.
Air Bags:frontal
General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on October 13, 2016. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16007.
Oct 9, 2015
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Silverado and GMC Sierra trucks manufactured January 24, 2014, to February 26, 2014, 2015 Chevrolet Suburban vehicles manufactured February 12, 2014 and Chevrolet Tahoe vehicles manufactured February 6, 2014, to February 13, 2014. In the affected vehicles, the ignition lock actuator may bind, making turning the key difficult or causing the ignition to get stuck in the "Start" position.
Consequence & remedy
Consequence: If stuck in the "Start" position, the ignition may suddenly snap back into the "Accessory" position, causing a loss of engine, steering, and braking power, increasing the risk of a vehicle crash. If the vehicle is in a crash, the air bags may not deploy, increasing the risk of occupant injury.
Remedy: GM will notify owners, and dealers will replace the ignition lock housing, free of charge. The recall began on November 20, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 15573.
Nov 10, 2014
General Motors LLC (GM) is recalling certain model year 2015 Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, and Yukon XL vehicles, equipped with electric power steering (EPS). Due to a problem with the EPS module, the affected vehicles may experience a sudden loss of power steering assist during vehicle operation.
Consequence & remedy
Consequence: An unexpected loss of power steering increases the risk of a crash.
Remedy: GM will notify owners, and dealers will replace the power steering assist motor kit, free of charge. The recall began on November 17, 2014. Owners may contact GM customer service at 1-800-222-1020 (Chevrolet), or 1-800-462-8782 (GMC). GM's number for this recall is 14743.
Jul 23, 2014
General Motors LLC (GM) is recalling certain model year 2015 Chevrolet Suburban, Suburban LTZ, Tahoe, Tahoe LTZ, GMC Yukon, and Yukon XL Denali vehicles manufactured on May 13, 2014. The affected vehicles were assembled with a roof rail air bags (RRAB) that were not reinforced at the points were the bags contact the hardware used to attach the roof carrier.
Consequence & remedy
Consequence: During deployment, the RRAB may be punctured or torn by the roof carrier hardware, reducing its performance and increasing the risk of occupant injury in the event of a crash.
Remedy: GM will notify owners, and dealers will replace the roof carrier attaching hardware, free of charge. The recall is expected to begin in early September 2014. Owners may contact GM customer service at 1-800-222-1020 (Chevrolet) or 1-800-462-8782 (GMC). GM's number for this recall is 14359.
Jun 27, 2014
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Silverado and GMC Sierra vehicles, and model year 2015 GMC Yukon and Chevrolet Suburban and Tahoe vehicles. In the affected vehicles, an electrical signal short may cause the transfer case to shift to neutral without the driver's input.
Consequence & remedy
Consequence: If the transfer case switches to neutral while the vehicle is parked and the parking brake is not in use, the vehicle may roll away increasing the risk of injury to bystanders. If the transfer case switches to neutral while the vehicle is being driven, the vehicle would lose drive power, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will re-program the software in the transfer case control module, free of charge. The recall began in early August 2014. Owners may contact General Motors customer service at 1-800-222-1020 (Chevrolet), or 1-800-462-8782 (GMC). GM's number for this recall is 14192.
Mar 31, 2014
General Motors LLC (GM ) is recalling certain model year 2014 Chevrolet Silverado Light Duty Regular Cab, Double Cab, and Crew Cab 1500 series and model year 2015 Suburban and Tahoe; GMC model year 2014 Sierra Regular Cab, Double Cab, and Crew Cab 1500 Series and model year 2015 Yukon and Yukon XL vehicles equipped with a 6-Speed Automatic Transmission (feature code MYC). The subject vehicles may have a transmission oil cooler line that is not securely seated in the fitting.
Consequence & remedy
Consequence: If the line is not securely seated and transmission oil leaks from the fitting, the oil could contact a hot surface and cause a vehicle fire.
Remedy: GM will notify owners, and dealers will inspect the transmission oil cooler line connection and repair the vehicles, as needed, free of charge. The recall began on May 19, 2014. Owners may contact Chevrolet at 1-866-694-6546 or GMC owners may contact GMC at 1-866-996-9463. GM's number for this recall is 14121.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE18012 · Brake Vacuum Pump Failure
Opened Nov 20, 2018 · Closed Apr 10, 2022
Status: closed (inferred from source dates) · Service Brakes; Service Brakes, Hydraulic; Service Brakes, Hydraulic:power Assist:vacuum
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
Additional source detail variants (3)
Service Brakes
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
Service Brakes, Hydraulic
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
Service Brakes, Hydraulic:power Assist:vacuum
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
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