NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
140 reports90,000 miles · Oct 7, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. AT LOW SPEEDS HE EXPERIENCED UNWANTED ANTI-LOCK BRAKE (ABS) ACTIVATION. A MECHANIC REPLACED THE FRONT AND REAR BRAKES. THE DEALER CONFIRMED THAT RECALL # 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTI-LOCK) FREE REMEDY WAS NOT RELATED TO HIS VEHICLE IDENTIFICATION NUMBER. NO REPAIRS WERE …
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. AT LOW SPEEDS HE EXPERIENCED UNWANTED ANTI-LOCK BRAKE (ABS) ACTIVATION. A MECHANIC REPLACED THE FRONT AND REAR BRAKES. THE DEALER CONFIRMED THAT RECALL # 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTI-LOCK) FREE REMEDY WAS NOT RELATED TO HIS VEHICLE IDENTIFICATION NUMBER. NO REPAIRS WERE MADE. THE FAILURE MILEAGE WAS 90,000. THE CURRENT MILEAGE WAS 140,000 .
NHTSA ODI #10286637
105,268 miles · Aug 17, 2009
Service Brakes, Hydraulic
COMPLETE BRAKE FAILURE ON A 2001 GMC SIERRA 1500 PICKUP TRUCK. ON THE HW1 FWY ON THE ISLAND OF OAHU , HAWAII @ 7:30 PM HAWAIIAN TIME. WAS GOING 60 MILES PER HOUR WITH NO BRAKES. THE SYSTEM DIDNT RESPOND OR REPORT A FAILURE. HAD TOO DOWN SHIFT WITH AUTOMATIC TRANSMISSION & USE PARKING BRAKE TOO STOP VEHICAL & WAS ABLE 2 MANUEVER…
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COMPLETE BRAKE FAILURE ON A 2001 GMC SIERRA 1500 PICKUP TRUCK. ON THE HW1 FWY ON THE ISLAND OF OAHU , HAWAII @ 7:30 PM HAWAIIAN TIME. WAS GOING 60 MILES PER HOUR WITH NO BRAKES. THE SYSTEM DIDNT RESPOND OR REPORT A FAILURE. HAD TOO DOWN SHIFT WITH AUTOMATIC TRANSMISSION & USE PARKING BRAKE TOO STOP VEHICAL & WAS ABLE 2 MANUEVER THE TRUCK ONTO THE SHOULDER OF HW1 FWY & SLID ON THE RED DIRT UNTIL IT STOP SIX FEET FROM A CALL BOX. PLEASE HELP TOO AVOID THIS HAPPENING TOO ANYONE ELSE. THE TRUCK IS @ GMC CUTTER IN WAIPAHU HAWAII.
NHTSA ODI #10280720
78,000 miles · May 6, 2009
Fuel System, Gasoline
TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CONTACT STATED THAT THE FUEL GAUGE WOULD FLUCTUATE FREQUENTLY AND REGISTER IT AS FULL AND THEN EMPTY. GMC STATED THAT THE VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 06E043000. THE ONLY NEW EQUIPMENT ON THE VEHICLE WERE THE WHEELS, TIRES, AND WATER PUMP. EVERYTHING ELSE WAS …
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CONTACT STATED THAT THE FUEL GAUGE WOULD FLUCTUATE FREQUENTLY AND REGISTER IT AS FULL AND THEN EMPTY. GMC STATED THAT THE VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 06E043000. THE ONLY NEW EQUIPMENT ON THE VEHICLE WERE THE WHEELS, TIRES, AND WATER PUMP. EVERYTHING ELSE WAS THE ORIGINAL EQUIPMENT. THE VEHICLE HAS BEEN TO THE DEALER ON ONE OCCASION. THE FAILURE MILEAGE WAS 78,000 AND CURRENT MILEAGE WAS 158,000. UPDATED 8/10/09 *CN
NHTSA ODI #10267890
37,600 miles · Feb 2, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CONTACT STATED THAT THE ANTILOCK BRAKES PREMATURELY ACTIVATE ON DRY PAVEMENT. THE DEALER STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE FAILURE MILEAGE WAS 37,600. UPDATED 3/5/09 *CN UPDATED 03/10/09. *JB
NHTSA ODI #10257205
100,000 miles · Dec 26, 2008
Engine And Engine Cooling
I HAVE A 2001 GMC SIERRA 1500 THAT STALLS ON A CONSTANT BASIS WHILE GOING A LOW SPEEDS. THIS PROBLEM HAS BEEN HAPPENING SINCE I PURCHASED THE TRUCK A FEW YEARS AGO BUT HAS GOTTEN A LOT WORSE RECENTLY. THE TRUCK STALLS SEVERAL TIMES EVERY DAY NOW WHILE COMING TO A STOP. I HAVE TO PULL OVER TO THE SIDE OF THE ROAD AND THE TRUCK…
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I HAVE A 2001 GMC SIERRA 1500 THAT STALLS ON A CONSTANT BASIS WHILE GOING A LOW SPEEDS. THIS PROBLEM HAS BEEN HAPPENING SINCE I PURCHASED THE TRUCK A FEW YEARS AGO BUT HAS GOTTEN A LOT WORSE RECENTLY. THE TRUCK STALLS SEVERAL TIMES EVERY DAY NOW WHILE COMING TO A STOP. I HAVE TO PULL OVER TO THE SIDE OF THE ROAD AND THE TRUCK WILL RESTART INSTANTLY UNTIL IT STALLS AGAIN AT THE NEXT STOP. I CHECKED YOUR WEB SITE AND THERE ARE SOME RECALLS FOR CRANK SENSORS FOR GMC SIERRAS, BUT NOT THE 1500 MODEL, WHICH IS WHAT I HAVE. MY TRUCK HAS THE EXACT SAME PROBLEMS DESCRIBED IN THE CRANK SENSOR CASE. SEVERAL TIMES CARS HAVE BEEN BEHIND ME WHILE MY TRUCK STALLED AND THIS COULD HAVE CAUSED AN ACCIDENT. *TR
NHTSA ODI #10252804
50,000 miles · Sep 29, 2008
Electrical SystemService Brakes, Hydraulic
I BOUGHT A GMC SIERRA C-1500 PICKUP TRUCK, NEW IN 2001. IN SEPT '05, THE ABS LIGHT CAME ON & A HUMMING NOISE COULD BE HEARD EVEN AFTER THE IGNITION WAS TURNED OFF. THE ODOMETER WAS AT 50,000 MILES, AT THAT TIME. THE PROBLEM WAS THE EBCM SHORTED-OUT AND NEEDED TO BE REPLACED. NOW, 31,000 MILES & 3 YEARS LATER (81,000 TOTAL MILE…
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I BOUGHT A GMC SIERRA C-1500 PICKUP TRUCK, NEW IN 2001. IN SEPT '05, THE ABS LIGHT CAME ON & A HUMMING NOISE COULD BE HEARD EVEN AFTER THE IGNITION WAS TURNED OFF. THE ODOMETER WAS AT 50,000 MILES, AT THAT TIME. THE PROBLEM WAS THE EBCM SHORTED-OUT AND NEEDED TO BE REPLACED. NOW, 31,000 MILES & 3 YEARS LATER (81,000 TOTAL MILES), IT SHORTED-OUT AGAIN & NEEDED TO BE REPLACED. THE COST OF THIS PART ALONE IS $1,000.00 (+ OVER $200.00 INSTALLATION). THAT PART ISN'T EVEN SUBJECTED TO NORMAL 'WEAR & TEAR' LIKE BRAKES, BECAUSE IT'S NOT A MOVING PART. IT'S A COMPUTER MODULE THAT CONTROLS THE ANTI-LOCK BRAKES, THAT IS VITAL IN CASE OF EMERGENCY BRAKING, WHICH LUCKILY I HAVEN'T NEEDED TO USE. I DON'T KNOW IF THE EBCM (PART) IS DEFECTIVE ITSELF OR IF SOMETHING ELSE IS CAUSING IT TO SHORT OUT, BUT I DON'T THINK THIS PART SHOULD FAIL, THIS OFTEN. REQUIRING A THIRD EBCM IN 7 YEARS, IN MY OPINION, IS UNACCEPTABLE. I'VE CONTACTED GMC & I DON'T THINK I RECEIVED A LEGITIMATE REASON FOR THE FAILURE OF THE PART'JUST A POOR EXCUSE. HIS REASONING WAS THAT MY VEHICLE IS 7 YEARS OLD & HAS 81,000 MILES, THAT IT'S ACCEPTABLE FOR A COMPUTER MODULE, WHICH CONTROLS THE ANTI-LOCK BRAKES (A SAFETY ISSUE), TO MALFUNCTION & NEED REPLACING TWICE. THAT 'REASON' WAS TOTALLY ABSURD IN MY OPINION. MILEAGE SHOULDN'T COME INTO PLAY BECAUSE IT'S AN ELECTRONIC PART NOT A MOVING PART. IF THEY WANT TO JUSTIFY IT BECAUSE THE TRUCK IS 7 YEARS OLD'.IT WAS THE PART THAT FAILED, NOT THE TRUCK & IT WAS ONLY 3 YEARS OLD AND ONLY 31,000 MILES HAD BEEN ADDED, WHEN IT SHORTED-OUT AGAIN! SO, THEY SHOULDN'T EVEN BE TALKING ABOUT THE VEHICLE ITSELF'JUST THE FAULTY PART WHICH HAPPENS TO CONTROL A VERY IMPORTANT SAFETY FEATURE! *TR
NHTSA ODI #10243960
Mileage unknown · Sep 25, 2008
Fuel System, Other
I FULLY SUGGEST THAT YOU DO AN INVESTIGATION ON GMC/CHEVY PICK-UP TRUCKS. I, ALONG WITH THOUSANDS OF OTHERS ARE EXPERIENCING FUEL GAUGE PROBLEMS. THE FUEL GAUGES ARE GOING OUT VERY QUICKLY. THEY CONSTANTLY SHOW THAT YOU EITHER HAVE A FULL OR AN EMPTY TANK WHEN NEITHER MAY BE THE CASE. YOU NEVER KNOW HOW MUCH GAS IS IN THE TANK. …
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I FULLY SUGGEST THAT YOU DO AN INVESTIGATION ON GMC/CHEVY PICK-UP TRUCKS. I, ALONG WITH THOUSANDS OF OTHERS ARE EXPERIENCING FUEL GAUGE PROBLEMS. THE FUEL GAUGES ARE GOING OUT VERY QUICKLY. THEY CONSTANTLY SHOW THAT YOU EITHER HAVE A FULL OR AN EMPTY TANK WHEN NEITHER MAY BE THE CASE. YOU NEVER KNOW HOW MUCH GAS IS IN THE TANK. IT ALSO MAKES THE LOW FUEL LIGHT STAY ON CONSTANTLY. THERE IS CURRENTLY NO RECALL ON THIS. I FIND THIS HARD TO BELIEVE CONSIDERING THE HUNDREDS OF THOUSANDS OF THESE VEHICLES ON THE ROAD. THERE HAVE BEEN RECALLS ON FAR LESS SERIOUS ISSUES THAN THIS. THE QUOTES FROM GMC TO CORRECT IT IS UP TO $500. THIS MATTER NEEDS URGENT ATTENTION. *TR
NHTSA ODI #10243394
33,000 miles · Sep 17, 2008
Parking BrakeService Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CABLE STOP HAS FALLEN OFF THE EMERGENCY BRAKE RELEASE CABLE. THE CONTACT STATED THAT HE HAS BEEN DRIVING WITHOUT AN EMERGENCY BRAKE EVER SINCE. THE DEALER STATED THAT THERE WERE NO RECALLS FOR THIS FAILURE. THE FAILURE MILEAGE WAS 33,000. UPDATED 06/03/10*BF THE CONSUMER A…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CABLE STOP HAS FALLEN OFF THE EMERGENCY BRAKE RELEASE CABLE. THE CONTACT STATED THAT HE HAS BEEN DRIVING WITHOUT AN EMERGENCY BRAKE EVER SINCE. THE DEALER STATED THAT THERE WERE NO RECALLS FOR THIS FAILURE. THE FAILURE MILEAGE WAS 33,000. UPDATED 06/03/10*BF THE CONSUMER ALSO STATED THE ABS ACTIVATED WHEN IT SHOULDN'T HAVE. UPDATED 06/04/10.*JB
NHTSA ODI #10242552
123,007 miles · Sep 4, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CONTACT STATED THAT THE ECM IN THE VEHICLE EMITS INVALID DATA INTO THE SYSTEM. AS A RESULT, MISCOMMUNICATION IN THE HYDRAULIC UNIT OCCURS WHILE APPLYING HYDRAULIC PRESSURE TO ALL FOUR TIRES. NHTSA CAMPAIGN ID NUMBER 06E050000 (SERVICE BRAKES, AIR) WAS REFERENCED. THE FAILURE MI…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CONTACT STATED THAT THE ECM IN THE VEHICLE EMITS INVALID DATA INTO THE SYSTEM. AS A RESULT, MISCOMMUNICATION IN THE HYDRAULIC UNIT OCCURS WHILE APPLYING HYDRAULIC PRESSURE TO ALL FOUR TIRES. NHTSA CAMPAIGN ID NUMBER 06E050000 (SERVICE BRAKES, AIR) WAS REFERENCED. THE FAILURE MILEAGE WAS 123,007.
NHTSA ODI #10240934
49,000 miles · Aug 10, 2008
Service Brakes, Hydraulic
2001 GMC SIERRA PICK TRUC 1500 - ABS BRAKE MODULE HAS GONE OUT TWO TIMES NOW. *TR
NHTSA ODI #10237618
NHTSA investigations
2EA04011 · Parking Brake Failure
Opened Apr 9, 2004 · Closed May 10, 2005
Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical; Parking Brake:conventional:mechanical:linkage And Cable
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Additional source detail variants (4)
Parking Brake:conventional
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake:conventional:mechanical
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake:conventional:mechanical:linkage And Cable
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Parking Brake
IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
PE03057 · Parking Brake Failure
Opened Dec 8, 2003 · Closed Apr 9, 2004
Status: closed (inferred from source dates) · Parking Brake
ODI OPENED PE03-057 TO ASSESS PARKING BRAKE INEFFECTIVENESS IN THE SUBJECT VEHICLES.THESE VEHICLES ARE EQUIPPED WITH FOUR WHEEL DISC BRAKES THAT INCORPORATE A SINGLE-SHOE DRUM-IN-HAT PARKING BRAKE INDEPENDENT OF THE SERVICE BRAKES.COMPLAINT AND WARRANTY DATA INDICATE THAT THE PARKING BRAKE LININGS TEND TO WEAR OUT EARLY IN THE LIFE OF THE VEHICLE (AT AN AVERAGE OF 24 MONTHS IN SERVICE), REDUCING THE PARKING BRAKE SYSTEM'S TORQUE BELOW THAT NEEDED TO IMMOBILIZE THE VEHICLE.GM HAS ATTRIBUTED THIS ACCELERATED WEAR TO FOREIGN MATERIAL INTRUSION AND A FAILURE OF THE BRAKE SHOE TO PROPERLY SELF-CENTER WITHIN ITS BRAKE DRUM.EFFECTIVE WITH THE START OF MY 2003 PRODUCTION, A NEWER REDUCED FORCE HOLD-DOWN CLIP WAS INTRODUCED TO FACILITATE BRAKE SHOE DISENGAGEMENT FROM THE DRUM SURFACE.THIS PART IS ALSO AVAILABLE AT THE SERVICE LEVEL FOR THE MY 1999-2002 VEHICLES.GM HAS INDICATED THAT THE PAKING BRAKE IS INTENDED TO OPERATE IN CONJUNCTION WITH THE TRANSMISSION TO IMMOBILZE PARKED VEHICLES, AND THAT IN MANY CASES, ACCELERATED PARKING BRAKE LINING WEAR IS CAUSED BY ROUGH USE, VEHICLE MODIFICATIONS, AND DRIVING WITH THE PARKING ENGAGED. ODI HAS UPGRADED THE PRELIMINARY EVALUATION TO AN ENGINEERING ANALYSIS TO GATHER FURTHER INFORMATION CONCERNING PARKING BRAKE USAGE FACTORS AND THE CIRCUMSTANCES SURROUNDING THE SEVENTEEN REPORTED VEHICLE CRASHES.
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