NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
39 reportsClear category filter157,500 miles · Jan 23, 2014
Service BrakesService Brakes, HydraulicSuspension
TL* THE CONTACT OWNS A 2000 GMC YUKON. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH, THE BRAKES FAILED TO ENGAGE WHEN DEPRESSED AND THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOOR BOARD. THE CONTACT MENTIONED THAT THE ABS SYSTEM ACTIVATED INDEPENDENTLY . THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DISCOVERED T…
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TL* THE CONTACT OWNS A 2000 GMC YUKON. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH, THE BRAKES FAILED TO ENGAGE WHEN DEPRESSED AND THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOOR BOARD. THE CONTACT MENTIONED THAT THE ABS SYSTEM ACTIVATED INDEPENDENTLY . THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DISCOVERED THAT THE BRAKE LINE WAS CORRODED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE AND CURRENT MILEAGE WAS 157,500. UPDATED 02/24/14*LJ THE CONSUMER STATED THE RECALLS WERE NEVER DONE. THE RECALLS WERE FALSELY REPORTED AS BEING COMPLETE. THE FRONT BEARING ASSEMBLIES HAD TO BE REPLACED, AT THE CONSUMERS EXPENSE. UPDATED 02/25/14
NHTSA ODI #10561193
75,000 miles · Mar 12, 2012
Service Brakes, Hydraulic
MY GMC YUKON EXPERIENCED TOTAL BRAKE FAILURE. MY WIFE WAS DRIVING WITH OUR 3 MONTH OLD SON AND LUCKILY SHE WAS ABLE TO STOP OFF OF THE SIDE OF THE ROAD IN A FIELD. WHEN I ARRIVED, I FOUND A PUDDLE OF FLUID UNDER THE DRIVER SIDE SEAT FROM BADLY CORRODED STEEL BRAKE LINES. AFTER ONLY A FEW MINUTES OF ONLINE RESEARCHING, I HAVE …
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MY GMC YUKON EXPERIENCED TOTAL BRAKE FAILURE. MY WIFE WAS DRIVING WITH OUR 3 MONTH OLD SON AND LUCKILY SHE WAS ABLE TO STOP OFF OF THE SIDE OF THE ROAD IN A FIELD. WHEN I ARRIVED, I FOUND A PUDDLE OF FLUID UNDER THE DRIVER SIDE SEAT FROM BADLY CORRODED STEEL BRAKE LINES. AFTER ONLY A FEW MINUTES OF ONLINE RESEARCHING, I HAVE FOUND THOUSANDS OF SIMILAR STORIES; SOME OF WHICH ENDED MUCH WORSE. CLEARLY THIS IS A QUALITY AND SAFETY ISSUE. *TR
NHTSA ODI #10451124
82,000 miles · Nov 29, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 GMC YUKON. THE CONTACT STATED THAT THE ABS SYSTEM ACTIVATED INDEPENDENTLY WHILE DRIVING 5 MPH, CAUSING AN INCREASE IN STOPPING DISTANCE AND TIME. THE CONTACT HAD THE VEHICLE SERVICED UNDER NHTSA CAMPAIGN I.D. NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK) BUT THE REPAIR DID NOT REMEDY THE ISSU…
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TL* THE CONTACT OWNS A 2000 GMC YUKON. THE CONTACT STATED THAT THE ABS SYSTEM ACTIVATED INDEPENDENTLY WHILE DRIVING 5 MPH, CAUSING AN INCREASE IN STOPPING DISTANCE AND TIME. THE CONTACT HAD THE VEHICLE SERVICED UNDER NHTSA CAMPAIGN I.D. NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK) BUT THE REPAIR DID NOT REMEDY THE ISSUE. THE CONTACT HAD THE WHEEL SPEED SENSOR TWICE BUT IT ALSO DID NOT CORRECT THE ISSUE. THE FAILURE MILEAGE WAS 82,000.
NHTSA ODI #10437686
230,480 miles · Sep 24, 2011
Service Brakes, Hydraulic
AFTER NO WARNING (LIGHTS, CHIMES OR ALARMS), APPLIED BRAKES AND PEDAL WENT TO THE FLOOR. NO BRAKES. LUCKILY IT WAS VERY EARLY AND NOBODY WAS ON THE ROAD WHEN I BLEW THROUGH A STOP SIGN INTERSECTION. *TR LOCAL DEALER SAYS ALUMINUM BRAKE LINES WERE SEVERELY CORRODED AND HAD RUPTURED. NEARLY $2000 TO REPLACE ALUMINUM BRAKE…
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AFTER NO WARNING (LIGHTS, CHIMES OR ALARMS), APPLIED BRAKES AND PEDAL WENT TO THE FLOOR. NO BRAKES. LUCKILY IT WAS VERY EARLY AND NOBODY WAS ON THE ROAD WHEN I BLEW THROUGH A STOP SIGN INTERSECTION. *TR LOCAL DEALER SAYS ALUMINUM BRAKE LINES WERE SEVERELY CORRODED AND HAD RUPTURED. NEARLY $2000 TO REPLACE ALUMINUM BRAKE LINES WITH STEEL. EVERYONE KNOWS WHEN YOU PLACE DIFFERENT METALS IN CONTACT WHERE THEY CAN GET WET, YOU WILL GET ELECTRO-CHEMICAL CORROSION OF THE WEAKER METAL, IN THIS CASE, ALUMINUM. THAT'S WHY BOATS USE ALUMINUM AND ZINC AS A SACRIFICIAL METAL IN MARINE ENVIRONMENTS - TO PROTECT THE ENGINE FROM CORROSION. THIS IS SURELY AN ENGINEERING FLAW. ON MY YUKON, THE ALUMINUM BRAKE LINES ARE ATTACHED TO THE STEEL FRAME UNDERNEATH THE VEHICLE WHERE THEY ARE SURE TO GET WET ANYTIME IT RAINS, THUS GUARANTEEING THE WEAKER ALUMINUM METAL WILL CORRODE. I HAVE A 45-YEAR-OLD MUSTANG WITH ORIGINAL BRAKE LINES (STEEL) AND NO CORROSION. 10 YEARS IS ABSOLUTELY UNACCEPTABLE FOR BRAKE LINES TO BE CORRODED TO THE POINT OF CATASTROPHIC BRAKE FAILURE THROUGH NORMAL USE AND NORMAL WEATHER. I LIVE IN MARYLAND, NOT ALASKA. OUR WEATHER IS AVERAGE. THERE SHOULD BE A RECALL AND I SHOULD BE REIMBURSED. *TR
NHTSA ODI #10427029
89,000 miles · Jul 12, 2010
Service Brakes, HydraulicCrash
JUNE 2010 AS I WAS PULLING MY 2000 GMC YUKON INTO A PARKING SPACE THE ANTI-LOCK BRAKES LOCKED UP AND I CRASHED INTO THE VEHICLE FACING ME. LIMITED DAMAGE WAS DONE TO THE OTHER VEHICLE. THERE WAS NOTHING I COULD DO TO STOP MY VEHICLE FROM HITTING THE OTHER CAR. THERE HAD BEEN NO SIGNS OF ANYTHING BEING WRONG WITH MY BRAKES BEFORE…
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JUNE 2010 AS I WAS PULLING MY 2000 GMC YUKON INTO A PARKING SPACE THE ANTI-LOCK BRAKES LOCKED UP AND I CRASHED INTO THE VEHICLE FACING ME. LIMITED DAMAGE WAS DONE TO THE OTHER VEHICLE. THERE WAS NOTHING I COULD DO TO STOP MY VEHICLE FROM HITTING THE OTHER CAR. THERE HAD BEEN NO SIGNS OF ANYTHING BEING WRONG WITH MY BRAKES BEFORE THE INCIDENT. SINCE THEN MY VEHICLE HAS CONTINUED TO LOCK UP AT RANDOM. I CALLED THE LOCAL DEALERSHIP AND THEY SAID THERE WAS NO RECALL. AFTER SEARCHING THE INTERNET, I FOUND THAT THERE WAS A RECALL IN 2005 IN SOME OTHER STATES WITH THE EXACT SAME PROBLEM. OF COURSE THE STATE I LIVE IN WAS NOT INCLUDED IN THE RECALL AND ONCE A RECALL HAS BEEN ISSUED, IT WILL NOT BE ISSUED AGAIN IN OTHER STATES. THEREFORE, I AM FACED WITH THE EXPENSES OF FIXING A PROBLEM THE GMAC KNOWS EXIST AT MY EXPENSE!!!!! I'M SURE IT WILL NOT BE CHEAP. THANK YOU GMAC!!! *TR
NHTSA ODI #10342686
55,000 miles · Oct 27, 2009
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 GMC YUKON. AT RELATIVELY LOW SPEEDS HE EXPERIENCES UNWANTED ANTI-LOCK BRAKE ACTIVATION. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER. THE VEHICLE WAS REPAIRED UNDER THE NHTSA RECALL CAMPAIGN ID NUMBER 05V3790000(SERVICE BRAKES, HYDRAULIC:ANTI-LOCK). THE FAILURE RE-OCCURRED OVER A PERIOD OF TIME.…
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TL* THE CONTACT OWNS A 2000 GMC YUKON. AT RELATIVELY LOW SPEEDS HE EXPERIENCES UNWANTED ANTI-LOCK BRAKE ACTIVATION. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER. THE VEHICLE WAS REPAIRED UNDER THE NHTSA RECALL CAMPAIGN ID NUMBER 05V3790000(SERVICE BRAKES, HYDRAULIC:ANTI-LOCK). THE FAILURE RE-OCCURRED OVER A PERIOD OF TIME. THE RECALL REMEDY WAS INSUFFICIENT AND DID NOT ADDRESS THE RECALL DEFECT. THE VEHICLE HAS NOT BEEN REPAIRED FOR THE MALFUNCTION. THE CONTACT HAD CONCERN OF THE SAFETY RISK INVOLVED. THE FAILURE MILEAGE WAS 55,000. THE CURRENT MILEAGE WAS 80,000. UPDATED 11/18/09. *LJ UPDATED 11/19/09*JB
NHTSA ODI #10290024
105,000 miles · Sep 28, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 GMC YUKON. HE STATED THAT HIS VEHICLE WAS REPAIRED ACCORDING TO RECALL# 05V379000 (SERVICE BRAKES, HYDRAULIC: ANTI LOCK) AT 60,000 MILES. AT 105,000 MILES HE BEGAN EXPERIENCING UNWANTED ANTI LOCK BRAKE SYSTEM (ABS) ACTIVATION. SINCE THE VEHICLE WAS PREVIOUSLY REPAIRED, HE WAS INELIGIBLE FOR A FREE R…
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TL*THE CONTACT OWNS A 2000 GMC YUKON. HE STATED THAT HIS VEHICLE WAS REPAIRED ACCORDING TO RECALL# 05V379000 (SERVICE BRAKES, HYDRAULIC: ANTI LOCK) AT 60,000 MILES. AT 105,000 MILES HE BEGAN EXPERIENCING UNWANTED ANTI LOCK BRAKE SYSTEM (ABS) ACTIVATION. SINCE THE VEHICLE WAS PREVIOUSLY REPAIRED, HE WAS INELIGIBLE FOR A FREE REMEDY. THE FAILURE CONTINUED TO OCCUR AFTER THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 105,000. THE CURRENT MILEAGE WAS 114,000.
NHTSA ODI #10285540
172,000 miles · Aug 27, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 GMC YUKON. WHEN THE CONTACT DEPRESSES THE BRAKE PEDAL AT LOW SPEEDS, HE CAN FEEL THE ABS PULSATING. AS A RESULT, THE VEHICLE IS MORE DIFFICULT TO STOP. ALSO, THE CONTACT HEARS A HUMMING SOUND WHENEVER THE FAILURE OCCURS. THE CONTACT DID NOT NOTICE ANY DIFFERENCES BEFOREHAND AND THE VEHICLE HAS NOT …
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TL*THE CONTACT OWNS A 2000 GMC YUKON. WHEN THE CONTACT DEPRESSES THE BRAKE PEDAL AT LOW SPEEDS, HE CAN FEEL THE ABS PULSATING. AS A RESULT, THE VEHICLE IS MORE DIFFICULT TO STOP. ALSO, THE CONTACT HEARS A HUMMING SOUND WHENEVER THE FAILURE OCCURS. THE CONTACT DID NOT NOTICE ANY DIFFERENCES BEFOREHAND AND THE VEHICLE HAS NOT BEEN DIAGNOSED BY THE DEALER. THE CURRENT MILEAGE WAS 174,000 AND FAILURE MILEAGE WAS 172,000.
NHTSA ODI #10239918
87,000 miles · Feb 27, 2007
Service Brakes, Hydraulic
ABS ACTIVATED AT LOW SPEED IN MY DRIVEWAY. *JB
NHTSA ODI #10183613
94,000 miles · May 3, 2006
Service Brakes, HydraulicCrashInjury
DT*: THE CONTACT STATED THE ABS SYSTEM FAILED TO STOP THE VEHICLE. WHILE APPROACHING A STOP DRIVING 5 MPH THE BRAKES FAILED AND REAR ENDED ANOTHER VEHICLE. SEAT BELTS WERE IN USE BY ALL 3 OCCUPANTS IN THE VEHICLE. HOWEVER INJURIES WERE SUSTAINED TO THE DRIVER. THE AIR BAGS DID NOT DEPLOY. THE POLICE WERE ON SCENE AND A REP…
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DT*: THE CONTACT STATED THE ABS SYSTEM FAILED TO STOP THE VEHICLE. WHILE APPROACHING A STOP DRIVING 5 MPH THE BRAKES FAILED AND REAR ENDED ANOTHER VEHICLE. SEAT BELTS WERE IN USE BY ALL 3 OCCUPANTS IN THE VEHICLE. HOWEVER INJURIES WERE SUSTAINED TO THE DRIVER. THE AIR BAGS DID NOT DEPLOY. THE POLICE WERE ON SCENE AND A REPORT WAS FILED. PRIOR TO THE ACCIDENT THE ABS LIGHT ON THE INSTRUMENT PANEL WAS ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER; HOWEVER THE DEALER WAS UNABLE TO MAKE REPAIRS. THERE IS A NHTSA RECALL, # 05V37900, REGARDING THE SERVICE BRAKES, ANTILOCK. THE VIN WAS NOT INCLUDED IN THE RECALL.
NHTSA ODI #10156756
Official recalls
6Aug 29, 2005
CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES MAY EXPERIENCE UNWANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS. THIS RECALL WILL BE LAUNCHED IN THE "SALT BELT" STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MARYLAND, MASSACHUSETTS, MAINE, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN AND THE DISTRICT OF COLUMBIA ONLY.
Consequence & remedy
Consequence: THIS CAN CAUSE INCREASED STOPPING DISTANCES DURING LOW-SPEED BRAKE APPLICATIONS, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS ARE TO REMOVE THE WHEEL SPEED SENSOR AND THOROUGHLY CLEAN THE WHEEL SPEED SENSOR MOUNTING SURFACE ON THE BEARING, APPLY RUST INHIBITOR TO THE CLEANED SURFACE, GREASE THE MOUNTING SURFACE, REINSTALL THE WHEEL SPEED SENSOR, AND CHECK THE PEAK-TO-PEAK OUTPUT VOLTAGE TO ENSURE THE WHEEL SPEED SIGNAL IS WITHIN SPECIFICATIONS. THE RECALL BEGAN SEPTEMBER 22, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463.
Mar 7, 2003
CERTAIN PICKUP TRUCK, VAN, AND MINI VAN CONVERSIONS EQUIPPED WITH SOUTHERN COMFORT BUILT RUNNING BOARDS THAT CONTAIN CERTAIN COURTESY LIGHTS MANUFACTURED BY AMERICAN TECHNOLOGY COMPONENTS, INC. THESE UNITS CONTAIN A COURTESY LIGHT OR LIGHTS THAT MIGHT OVERHEAT WHEN THE WIRE HARNESS IS EXPOSED TO EXCESSIVE MOISTURE AND ROAD SALT.
Consequence & remedy
Consequence: THIS OVERHEATING CONDITION CAN CAUSE THE RUNNING BOARD TO MELT OR CAUSE A FIRE.
Remedy: DEALERS WILL REPLACE THE WIRING HARNESS ON THESE RUNNING BOARDS. OWNER NOTIFICATION BEGAN MARCH 7, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT SOUTHERN COMFORT AT 1-800-745-6096.
Sep 17, 2002
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH REARWARD FOLDING HEAD RESTRAINTS ON THE SECOND ROW SEATS, TWO POTENTIAL PINCH POINTS EXIST ON EACH OF THE FOLDING HEAD RESTRAINTS WHEN THE RESTRAINTS ARE FOLDED REARWARD AS THE SEATBACK IS FOLDED DOWN.
Consequence & remedy
Consequence: IF A PERSON WERE TO INSERT THEIR FINGER(S) INTO THE PINCH POINT WHEN THE HEAD RESTRAINT FOLDS, IT COULD TRAP AND PINCH THE FINGER(S) CAUSING INJURY.
Remedy: DEALERS WILL INSTALL PROTECTIVE COVERS OVER THE PINCH POINTS. OWNER NOTIFICATION BEGAN NOVEMBER 8, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020, GMC AT 1-800-462-8782, OR CADILLAC AT 1-800-458-8006.
Jul 1, 2002
ON CERTAIN PICKUP AND UTILITY TRUCKS, SOME OF THESE VEHICLES HAVE AN AIR BAG SENSING DIAGNOSTIC MODULE (SDM) WHICH CONTAINS AN ANOMALY THAT COULD RESULT IN THE DRIVER AND PASSENGER'S AIR BAG FAILING TO DEPLOY DURING CERTAIN FRONTAL CRASHES.
Consequence & remedy
Consequence: IN A VEHICLE CRASH, FRONT SEAT OCCUPANTS MAY RECEIVE MORE SEVERE INJURIES.
Remedy: DEALERS WILL RECALIBRATE THE SDM ON THE AFFECTED VEHICLES. OWNER NOTIFICATION BEGAN AUGUST 28, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.
Oct 30, 2000
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. SOME OF THESE VEHICLES HAVE A CLEARANCE CONDITION BETWEEN THE FRONT RIGHT-HAND BRAKE PIPE AND THE BODY CROSS SILL THAT COULD DECREASE TO THE POINT OF ALLOWING CONTACT DURING THE LIFE OF THE VEHICLE. IF CONTACT OCCURS AND THE BRAKE PIPE BECOMES DAMAGED, IN HALF OF THE BRAKE SYSTEM THERE CAN BE A LOSS OF BRAKE FLUID AND PRESSURE. THE BRAKE WARNING LAMP WILL BE ACTIVATED WHEN THE BRAKE FLUID LEVEL REACHES THE INDICATOR LIMIT.
Consequence & remedy
Consequence: DURING BRAKING, THE PEDAL WILL BE LOWER THAN NORMAL AND STOPPING DISTANCES WILL BE LONGER. IF THIS OCCURS WHEN STOPPING DISTANCE IS LIMITED, A CRASH COULD OCCUR.
Remedy: DEALERS WILL INSPECT THE FRONT RIGHT-HAND BRAKE PIPE FOR WEAR. IF THERE ARE SIGNS OF WEAR, THIS SECTION OF THE BRAKE PIPE WILL BE REPLACED WITH A NEW DESIGNED BRAKE PIPE SECTION. IF THERE ARE NOT SIGNS OF WEAR ON THE BRAKE PIPE, THE DEALER WILL INSTALL A SPACER CLIP TO ENSURE SUFFICIENT CLEARANCE BETWEEN THE BRAKE PIPE AND THE BODY CROSS SILL.
Oct 25, 2000
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. SOME OF THESE VEHICLES HAVE LOOSE OR MISSING REAR WHEELHOUSE PLUGS. UNDER CERTAIN VEHICLE OPERATING CONDITIONS, EXHAUST GASES CAN FLOW FORWARD AND ACCUMULATE IN THE REAR WHEELHOUSE.
Consequence & remedy
Consequence: THESE GASES COULD FLOW INTO THE PASSENGER COMPARTMENT IF THE PLUG IS MISSING OR LOOSE AND COULD CAUSE POSSIBLE ILLNESS, UNCONSCIOUSNESS, OR DEATH.
Remedy: DEALERS WILL INSPECT THE VEHICLE FOR LOOSE OR MISSING WHEELHOUSE PLUGS AND INSTALL NEW PLUGS IF NECESSARY.
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
5PE10010 · Brake Line Corrosion Failure
Opened Mar 30, 2010 · Closed Jan 5, 2011
Status: closed (inferred from source dates) · Service Brakes, Hydraulic; Service Brakes, Hydraulic:power Assist:hydraulic:hoses, Lines/piping, And Fittings
The Office of Defects Investigation (ODI) received Defect Petition DP10-003 on March 2, 2010, requesting the investigation of model year (MY) 2003 Chevrolet Silverado 2500HD 4WD pickup trucks for corrosion failures of the vehicle brake lines.DP10-003 was granted and on March 30, 2010, Preliminary Evaluation PE10-010 was opened on more than six million model year 1999 through 2003 light trucks and sport utility vehicles manufactured and sold by General Motors Corporation (GM).On July 2, 2010, ODI received GM's response to an information request, which included GM's assessment of the frequency and safety consequences of the alleged defect. GM stated that:(1) the brake system of the subject vehicles is split front/rear and should a brake pipe suddenly fail for any reason, the affected vehicle would be capable of stopping with the pressure supplied by the remaining circuit; (2) the subject vehicles were designed to meet the hydraulic circuit partial failure requirements of Federal Motor Vehicle Safety Standards 105 and 135, Light Vehicle Brake Systems; and (3) should a brake fluid leak occur for any reason, the brake system malfunction indicator lamp (MIL) would illuminate and warn the driver before the brake fluid level was low enough to cause a loss of line pressure.ODI's and GM's analysis indicates that 85 percent of the complaints occurred on vehicles used primarily in States that use salt on the roads during Winter months (Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin).Overall the complaint rates per 100,000 vehicles for Salt Belt States is 43.0 and Non-Salt Belt is 3.0.In approximately 25 percent of the complaints the brake pipe failure occurred suddenly, with no warning (i.e., no MIL, Brake Fluid Loss Warning), and resulted in extended stopping distances.In 30 of these the increase in stopping distance that resulted was a factor in the crash and in 10 others the vehicle was intentionally steered off the road or into another lane of travel in order to avoid a crash.This investigation has been upgraded to an Engineering Analysis (EA11-001) for subject vehicles sold or currently registered in Salt Belt States to further assess the scope, frequency and safety risks associated with sudden failures of corroded brake pipes that can result in decreased brake effectiveness. ODI will continue to gather information on subject vehicles outside the Salt Belt as well.
Additional source detail variants (2)
Service Brakes, Hydraulic
The Office of Defects Investigation (ODI) received Defect Petition DP10-003 on March 2, 2010, requesting the investigation of model year (MY) 2003 Chevrolet Silverado 2500HD 4WD pickup trucks for corrosion failures of the vehicle brake lines.DP10-003 was granted and on March 30, 2010, Preliminary Evaluation PE10-010 was opened on more than six million model year 1999 through 2003 light trucks and sport utility vehicles manufactured and sold by General Motors Corporation (GM).On July 2, 2010, ODI received GM's response to an information request, which included GM's assessment of the frequency and safety consequences of the alleged defect. GM stated that:(1) the brake system of the subject vehicles is split front/rear and should a brake pipe suddenly fail for any reason, the affected vehicle would be capable of stopping with the pressure supplied by the remaining circuit; (2) the subject vehicles were designed to meet the hydraulic circuit partial failure requirements of Federal Motor Vehicle Safety Standards 105 and 135, Light Vehicle Brake Systems; and (3) should a brake fluid leak occur for any reason, the brake system malfunction indicator lamp (MIL) would illuminate and warn the driver before the brake fluid level was low enough to cause a loss of line pressure.ODI's and GM's analysis indicates that 85 percent of the complaints occurred on vehicles used primarily in States that use salt on the roads during Winter months (Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin).Overall the complaint rates per 100,000 vehicles for Salt Belt States is 43.0 and Non-Salt Belt is 3.0.In approximately 25 percent of the complaints the brake pipe failure occurred suddenly, with no warning (i.e., no MIL, Brake Fluid Loss Warning), and resulted in extended stopping distances.In 30 of these the increase in stopping distance that resulted was a factor in the crash and in 10 others the vehicle was intentionally steered off the road or into another lane of travel in order to avoid a crash.This investigation has been upgraded to an Engineering Analysis (EA11-001) for subject vehicles sold or currently registered in Salt Belt States to further assess the scope, frequency and safety risks associated with sudden failures of corroded brake pipes that can result in decreased brake effectiveness. ODI will continue to gather information on subject vehicles outside the Salt Belt as well.
Service Brakes, Hydraulic:power Assist:hydraulic:hoses, Lines/piping, And Fittings
The Office of Defects Investigation (ODI) received Defect Petition DP10-003 on March 2, 2010, requesting the investigation of model year (MY) 2003 Chevrolet Silverado 2500HD 4WD pickup trucks for corrosion failures of the vehicle brake lines.DP10-003 was granted and on March 30, 2010, Preliminary Evaluation PE10-010 was opened on more than six million model year 1999 through 2003 light trucks and sport utility vehicles manufactured and sold by General Motors Corporation (GM).On July 2, 2010, ODI received GM's response to an information request, which included GM's assessment of the frequency and safety consequences of the alleged defect. GM stated that:(1) the brake system of the subject vehicles is split front/rear and should a brake pipe suddenly fail for any reason, the affected vehicle would be capable of stopping with the pressure supplied by the remaining circuit; (2) the subject vehicles were designed to meet the hydraulic circuit partial failure requirements of Federal Motor Vehicle Safety Standards 105 and 135, Light Vehicle Brake Systems; and (3) should a brake fluid leak occur for any reason, the brake system malfunction indicator lamp (MIL) would illuminate and warn the driver before the brake fluid level was low enough to cause a loss of line pressure.ODI's and GM's analysis indicates that 85 percent of the complaints occurred on vehicles used primarily in States that use salt on the roads during Winter months (Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin).Overall the complaint rates per 100,000 vehicles for Salt Belt States is 43.0 and Non-Salt Belt is 3.0.In approximately 25 percent of the complaints the brake pipe failure occurred suddenly, with no warning (i.e., no MIL, Brake Fluid Loss Warning), and resulted in extended stopping distances.In 30 of these the increase in stopping distance that resulted was a factor in the crash and in 10 others the vehicle was intentionally steered off the road or into another lane of travel in order to avoid a crash.This investigation has been upgraded to an Engineering Analysis (EA11-001) for subject vehicles sold or currently registered in Salt Belt States to further assess the scope, frequency and safety risks associated with sudden failures of corroded brake pipes that can result in decreased brake effectiveness. ODI will continue to gather information on subject vehicles outside the Salt Belt as well.
DP05009 · Parking Brake Failure
Opened Dec 20, 2005 · Closed May 31, 2006
Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Additional source detail variants (3)
Parking Brake:conventional
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Parking Brake:conventional:mechanical
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Parking Brake
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
PE05020 · Unwanted LOW-SPEED Abs Activation
Opened Apr 28, 2005 · Closed Sep 13, 2005
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip; Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
IN A LETTER DATED AUGUST 29, 2005, GM NOTIFIED ODI THAT IT WAS RECALLING CERTAIN MODEL YEAR 1999 THROUGH 2002 C/K PICKUP TRUCKS AND SPORT UTILITY VEHICLES TO CORRECT A PROBLEM WITH ANTI-LOCK BRAKE SYSTEM (ABS) WHEEL SPEED SENSOR CORROSION THAT MAY RESULT IN UNWANTED ABS ACTIVATION AND EXTENDED STOPPING DISTANCES DURING LOW-SPEED BRAKING (RECALL 05V-379).GM'S RECALL COVERS APPROXIMATELY 804,000 VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING 14 SALT-BELT STATES:CONNECTICUT, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, AND WEST VIRGINIA.THE RECALL PROCEDURE WILL INVOLVE REMOVING THE SENSOR, CLEANING THE MOUNTING SURFACE, APPLYING A RUST INHIBITOR (ZINC-X) TO THE SURFACE, AND REINSTALLING THE SENSOR.IF NECESSARY, THE SENSOR WILL BE REPLACED. THE POPULATION AND FAILURE REPORT DATA GIVEN IN THIS RESUME ARE FOR THE FULL REGION THAT HAS BEEN CONSIDERED BY ODI AS THE SALT-BELT.THAT INCLUDES DELAWARE, IOWA, MARYLAND, MINNESOTA, MISSOURI, WISCONSIN AND THE DISTRICT OF COLUMBIA IN ADDITION TO THE 14 STATES INCLUDED IN 05V-379.THE STATES COVERED BY GM'S RECALL HAVE THE HIGHEST INCIDENT RATES FOR THE SUBJECT CONDITION, ACCOUNTING FOR 91% OF THE INCIDENTS, BUT ONLY 24% OF SUBJECT VEHICLE SALES IN THE UNITED STATES.ODI'S ANALYSIS DETERMINED THAT 840 OF THE COMPLAINTS, 244 OF THE CRASHES, AND 16 OF THE INJURIES IDENTIFIED IN THIS INVESTIGATION OCCURRED IN THOSE STATES.THE RESULTING INCIDENT AND CRASH RATES ARE 96.2 AND 28.0 PER 100,000 VEHICLES RESPECTIVELY (NOTE:RATES ARE BASED ON VEHICLE SALES, NOT REGISTERED VEHICLES). THE CORRESPONDING NUMBERS IN THE EXCLUDED PORTIONS OF THE SALT-BELT ARE 399,000 VEHICLES, 81 INCIDENTS (20.3 PER 100,000 VEHICLES), 3 CRASHES, AND NO INJURIES.THE STATISTICS IN THE REMAINING 30 STATES ARE 2,406,000 VEHICLES, 168 INCIDENTS (7.0 PER 100,000 VEHICLES), 31 CRASHES, AND ONE INJURY.GM AND ODI ARE CONTINUING TO MONITOR THE PROBLEM EXPERIENCE IN STATES THAT ARE NOT INCLUDED IN THE RECALL.GM WILL PROVIDE ODI WITH UPDATED COMPLAINT, FIELD REPORT, AND WARRANTY DATA IN NOVEMBER 2005.ODI AND GM WILL REVIEW THAT DATA AND ASSESS THE APPROPRIATENESS OF THE CURRENT SCOPE OF THE RECALL AT THAT TIME.
Additional source detail variants (2)
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
IN A LETTER DATED AUGUST 29, 2005, GM NOTIFIED ODI THAT IT WAS RECALLING CERTAIN MODEL YEAR 1999 THROUGH 2002 C/K PICKUP TRUCKS AND SPORT UTILITY VEHICLES TO CORRECT A PROBLEM WITH ANTI-LOCK BRAKE SYSTEM (ABS) WHEEL SPEED SENSOR CORROSION THAT MAY RESULT IN UNWANTED ABS ACTIVATION AND EXTENDED STOPPING DISTANCES DURING LOW-SPEED BRAKING (RECALL 05V-379).GM'S RECALL COVERS APPROXIMATELY 804,000 VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING 14 SALT-BELT STATES:CONNECTICUT, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, AND WEST VIRGINIA.THE RECALL PROCEDURE WILL INVOLVE REMOVING THE SENSOR, CLEANING THE MOUNTING SURFACE, APPLYING A RUST INHIBITOR (ZINC-X) TO THE SURFACE, AND REINSTALLING THE SENSOR.IF NECESSARY, THE SENSOR WILL BE REPLACED. THE POPULATION AND FAILURE REPORT DATA GIVEN IN THIS RESUME ARE FOR THE FULL REGION THAT HAS BEEN CONSIDERED BY ODI AS THE SALT-BELT.THAT INCLUDES DELAWARE, IOWA, MARYLAND, MINNESOTA, MISSOURI, WISCONSIN AND THE DISTRICT OF COLUMBIA IN ADDITION TO THE 14 STATES INCLUDED IN 05V-379.THE STATES COVERED BY GM'S RECALL HAVE THE HIGHEST INCIDENT RATES FOR THE SUBJECT CONDITION, ACCOUNTING FOR 91% OF THE INCIDENTS, BUT ONLY 24% OF SUBJECT VEHICLE SALES IN THE UNITED STATES.ODI'S ANALYSIS DETERMINED THAT 840 OF THE COMPLAINTS, 244 OF THE CRASHES, AND 16 OF THE INJURIES IDENTIFIED IN THIS INVESTIGATION OCCURRED IN THOSE STATES.THE RESULTING INCIDENT AND CRASH RATES ARE 96.2 AND 28.0 PER 100,000 VEHICLES RESPECTIVELY (NOTE:RATES ARE BASED ON VEHICLE SALES, NOT REGISTERED VEHICLES). THE CORRESPONDING NUMBERS IN THE EXCLUDED PORTIONS OF THE SALT-BELT ARE 399,000 VEHICLES, 81 INCIDENTS (20.3 PER 100,000 VEHICLES), 3 CRASHES, AND NO INJURIES.THE STATISTICS IN THE REMAINING 30 STATES ARE 2,406,000 VEHICLES, 168 INCIDENTS (7.0 PER 100,000 VEHICLES), 31 CRASHES, AND ONE INJURY.GM AND ODI ARE CONTINUING TO MONITOR THE PROBLEM EXPERIENCE IN STATES THAT ARE NOT INCLUDED IN THE RECALL.GM WILL PROVIDE ODI WITH UPDATED COMPLAINT, FIELD REPORT, AND WARRANTY DATA IN NOVEMBER 2005.ODI AND GM WILL REVIEW THAT DATA AND ASSESS THE APPROPRIATENESS OF THE CURRENT SCOPE OF THE RECALL AT THAT TIME.
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip
IN A LETTER DATED AUGUST 29, 2005, GM NOTIFIED ODI THAT IT WAS RECALLING CERTAIN MODEL YEAR 1999 THROUGH 2002 C/K PICKUP TRUCKS AND SPORT UTILITY VEHICLES TO CORRECT A PROBLEM WITH ANTI-LOCK BRAKE SYSTEM (ABS) WHEEL SPEED SENSOR CORROSION THAT MAY RESULT IN UNWANTED ABS ACTIVATION AND EXTENDED STOPPING DISTANCES DURING LOW-SPEED BRAKING (RECALL 05V-379).GM'S RECALL COVERS APPROXIMATELY 804,000 VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING 14 SALT-BELT STATES:CONNECTICUT, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, AND WEST VIRGINIA.THE RECALL PROCEDURE WILL INVOLVE REMOVING THE SENSOR, CLEANING THE MOUNTING SURFACE, APPLYING A RUST INHIBITOR (ZINC-X) TO THE SURFACE, AND REINSTALLING THE SENSOR.IF NECESSARY, THE SENSOR WILL BE REPLACED. THE POPULATION AND FAILURE REPORT DATA GIVEN IN THIS RESUME ARE FOR THE FULL REGION THAT HAS BEEN CONSIDERED BY ODI AS THE SALT-BELT.THAT INCLUDES DELAWARE, IOWA, MARYLAND, MINNESOTA, MISSOURI, WISCONSIN AND THE DISTRICT OF COLUMBIA IN ADDITION TO THE 14 STATES INCLUDED IN 05V-379.THE STATES COVERED BY GM'S RECALL HAVE THE HIGHEST INCIDENT RATES FOR THE SUBJECT CONDITION, ACCOUNTING FOR 91% OF THE INCIDENTS, BUT ONLY 24% OF SUBJECT VEHICLE SALES IN THE UNITED STATES.ODI'S ANALYSIS DETERMINED THAT 840 OF THE COMPLAINTS, 244 OF THE CRASHES, AND 16 OF THE INJURIES IDENTIFIED IN THIS INVESTIGATION OCCURRED IN THOSE STATES.THE RESULTING INCIDENT AND CRASH RATES ARE 96.2 AND 28.0 PER 100,000 VEHICLES RESPECTIVELY (NOTE:RATES ARE BASED ON VEHICLE SALES, NOT REGISTERED VEHICLES). THE CORRESPONDING NUMBERS IN THE EXCLUDED PORTIONS OF THE SALT-BELT ARE 399,000 VEHICLES, 81 INCIDENTS (20.3 PER 100,000 VEHICLES), 3 CRASHES, AND NO INJURIES.THE STATISTICS IN THE REMAINING 30 STATES ARE 2,406,000 VEHICLES, 168 INCIDENTS (7.0 PER 100,000 VEHICLES), 31 CRASHES, AND ONE INJURY.GM AND ODI ARE CONTINUING TO MONITOR THE PROBLEM EXPERIENCE IN STATES THAT ARE NOT INCLUDED IN THE RECALL.GM WILL PROVIDE ODI WITH UPDATED COMPLAINT, FIELD REPORT, AND WARRANTY DATA IN NOVEMBER 2005.ODI AND GM WILL REVIEW THAT DATA AND ASSESS THE APPROPRIATENESS OF THE CURRENT SCOPE OF THE RECALL AT THAT TIME.
PE02067 · Alleged Failure Of 2ND Row Seatbelt Alr
Opened Sep 25, 2002 · Closed Feb 11, 2003
Status: closed (inferred from source dates) · Seat Belts; Seat Belts:rear/other
THE AUTOMATIC LOCKING RETRACTOR (ALR) IS A FEATURE INCORPORATED IN THE SUBJECT VEHICLE FOR LOCKING THE WEBBING TO PROPERLY SECURE A CHILD SAFETY SEAT INTO A VEHICLE.THIS PE WAS OPENED BASED ON A GM TECHNICAL SERVICE BULLETIN STATING THAT WITH CERTAIN CHILD SAFETY SEATS THE WEBBING MAY NOT REMAIN LOCKED.THERE ARE NO COMPLAINTS IN THE ODI DATABASE AND ONLY TWO COMPLAINTS TO GM.GM'S INSTRUCTIONS STATE FOR THE FINAL STEP IN USING THE WEBBING LOCK FEATURE TO PUSH AND PULL THE CHILD RESTRAINT TO BE SURE IT IS SECURE. IF THE ALR IS NOT LOCKED, THE USER WOULD BE FULLY AWARE OF THIS CONDITION PRIOR TO COMPLETING PROPER INSTALLATION OF THE CHILD SAFETY SEAT IN THIS VEHICLE.THIS INVESTIGATION DID NOT UNCOVER ANY COMPLAINTS OF THE ALR INADVERTENTLY UNLOCKING WHILE THE VEHICLE IS IN MOTION.THE EMERGENCY LOCKING RETRACTOR (ELR) FEATURE REMAINS AVAILABLE TO LOCK THE RETRACTOR IN A CRASH.A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE ATTACHED SUMMARY FOR ADDITIONAL INFORMATION.
Additional source detail variants (2)
Seat Belts
THE AUTOMATIC LOCKING RETRACTOR (ALR) IS A FEATURE INCORPORATED IN THE SUBJECT VEHICLE FOR LOCKING THE WEBBING TO PROPERLY SECURE A CHILD SAFETY SEAT INTO A VEHICLE.THIS PE WAS OPENED BASED ON A GM TECHNICAL SERVICE BULLETIN STATING THAT WITH CERTAIN CHILD SAFETY SEATS THE WEBBING MAY NOT REMAIN LOCKED.THERE ARE NO COMPLAINTS IN THE ODI DATABASE AND ONLY TWO COMPLAINTS TO GM.GM'S INSTRUCTIONS STATE FOR THE FINAL STEP IN USING THE WEBBING LOCK FEATURE TO PUSH AND PULL THE CHILD RESTRAINT TO BE SURE IT IS SECURE. IF THE ALR IS NOT LOCKED, THE USER WOULD BE FULLY AWARE OF THIS CONDITION PRIOR TO COMPLETING PROPER INSTALLATION OF THE CHILD SAFETY SEAT IN THIS VEHICLE.THIS INVESTIGATION DID NOT UNCOVER ANY COMPLAINTS OF THE ALR INADVERTENTLY UNLOCKING WHILE THE VEHICLE IS IN MOTION.THE EMERGENCY LOCKING RETRACTOR (ELR) FEATURE REMAINS AVAILABLE TO LOCK THE RETRACTOR IN A CRASH.A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE ATTACHED SUMMARY FOR ADDITIONAL INFORMATION.
Seat Belts:rear/other
THE AUTOMATIC LOCKING RETRACTOR (ALR) IS A FEATURE INCORPORATED IN THE SUBJECT VEHICLE FOR LOCKING THE WEBBING TO PROPERLY SECURE A CHILD SAFETY SEAT INTO A VEHICLE.THIS PE WAS OPENED BASED ON A GM TECHNICAL SERVICE BULLETIN STATING THAT WITH CERTAIN CHILD SAFETY SEATS THE WEBBING MAY NOT REMAIN LOCKED.THERE ARE NO COMPLAINTS IN THE ODI DATABASE AND ONLY TWO COMPLAINTS TO GM.GM'S INSTRUCTIONS STATE FOR THE FINAL STEP IN USING THE WEBBING LOCK FEATURE TO PUSH AND PULL THE CHILD RESTRAINT TO BE SURE IT IS SECURE. IF THE ALR IS NOT LOCKED, THE USER WOULD BE FULLY AWARE OF THIS CONDITION PRIOR TO COMPLETING PROPER INSTALLATION OF THE CHILD SAFETY SEAT IN THIS VEHICLE.THIS INVESTIGATION DID NOT UNCOVER ANY COMPLAINTS OF THE ALR INADVERTENTLY UNLOCKING WHILE THE VEHICLE IS IN MOTION.THE EMERGENCY LOCKING RETRACTOR (ELR) FEATURE REMAINS AVAILABLE TO LOCK THE RETRACTOR IN A CRASH.A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE ATTACHED SUMMARY FOR ADDITIONAL INFORMATION.
EA02015 · Throttle Sticking Closed
Opened Aug 1, 2002 · Closed Jan 12, 2004
Status: closed (inferred from source dates) · Vehicle Speed Control:linkages
THIS INVESTIGATION INVOLVES THE GENERAL MOTORS CORPORATION (GM)THROTTLE BODY (TB) UTILIZED IN MODEL YEAR (MY) 1999-2002 SILVERADO, SIERRA, TAHOE, SUBURBAN, AVALANCHE AND YUKON (SUBJECT VEHICLE(S)) WITH 4.8L, 5.3L, AND 6.0L ENGINES. THE TB VALVE MAY INTERMITTENTLY STICK IN A CLOSED POSITION.IN SUCH A SITUATION, AN OPERATOR MAY APPLY ADDITIONAL ACCELERATOR PEDAL FORCE TO INCREASE ENGINE SPEED.THE APPLICATION OF ADDITIONAL ACCELERATOR PEDAL FORCE, TO OPEN A STUCK THROTTLE VALVE, MAY OPEN THE THROTTLE VALVE MORE THAN INTENDED AND, IN TURN, ACCELERATE THE ENGINE AND VEHICLE MORE THAN INTENDED AND REASONABLY EXPECTED BY THE DRIVER.ON AUGUST 1, 2002, THE OFFICE OF DEFECTS INVESTIGATION (ODI), OF THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION (NHTSA), OPENED THIS ENGINEERING ANALYSIS.THE INVESTIGATION REVEALED THAT TWO FACTORS MAY CAUSE THE DEFECT: 1) TB MANUFACTURING PROCESS PROBLEMS; AND 2) ACCUMULATION OF DEPOSITS (A PCV SYSTEM BY-PRODUCT) ON OR AROUND THE TB THROTTLE VALVE AND BORE.ODI CONCLUDES THAT THE TB PERFORMS IN A DEFECTIVE MANNER AFTER ANALYZING GM?S DATA SUBMISSIONS, AND TEST DATA COLLECTED BY THE VEHICLE RESEARCH AND TEST CENTER (VRTC).FIFTY-NINE CRASHES ARE ALLEGED TO HAVE OCCURRED AS A RESULT OF GM?S TB DEFECT.THE MAJORITY OF THE CRASHES INVOLVE A SINGLE VEHICLE, ENGAGING IN A CLOSE QUARTER VEHICLE MANEUVER (OR LOW SPEED), AND CAUSING ONLY MINOR PROPERTY DAMAGE.FOUR OUT OF THE FIFTY-NINE CRASHES INVOLVE INJURY, AND THOSE INJURIES WERE MINOR.ALTHOUGH GM?S TB IS DEFECTIVE, BASED ON THE EVIDENCE GATHERED, ODI HAS FOUND THAT THE ACCELERATOR PEDAL FORCE REQUIRED TO OPEN A STUCK THROTTLE VALVE IS NEGLIGIBLE, AND THE THROTTLE VALVE DOES NOT STICK IN THE OPEN POSITION.THEREFORE THIS ENGINEERING ANALYSIS (EA02-015) WILL BE CLOSED AT THIS TIME.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.FOR A DETAILED DISCUSSION OF THE TB COMPONENT AND TESTING, PLEASE SEE THE ATTACHED REPORT.
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