NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
17 reportsClear category filter213,090 miles · Apr 4, 2016
Electrical SystemEngine And Engine CoolingPower TrainCrashFire
TRANNY, ABS, COOLING SYSTEM, TAILGATE, ETC. I BOUGHT THE TRUCK 2003 DIDN'T EXCHANGE TITLE UNTIL LATER RECALL WHEN I FIRST BOUGHT IT UNDER 50,000 MILE WARRANTY. I FILE AN COMPLAIN RECALL REPAIR STILL HAVING SAME PROBLEM. SAD THING MY FATHER IS AN RETIRED EMPLOYEE IN DALLAS LOCATION. RESEARCHED THE RECALLS FROM PREVIOUSLY AND PRE…
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TRANNY, ABS, COOLING SYSTEM, TAILGATE, ETC. I BOUGHT THE TRUCK 2003 DIDN'T EXCHANGE TITLE UNTIL LATER RECALL WHEN I FIRST BOUGHT IT UNDER 50,000 MILE WARRANTY. I FILE AN COMPLAIN RECALL REPAIR STILL HAVING SAME PROBLEM. SAD THING MY FATHER IS AN RETIRED EMPLOYEE IN DALLAS LOCATION. RESEARCHED THE RECALLS FROM PREVIOUSLY AND PRESENT SAME RESULTS. THEY HAVE UNTIL 2 DAYS TO CONTACT ME @ [XXX] IN GOING TO THE WAREHOUSE AND RETURN THE VEHICLE TO THE OWNER, CFO, CEO WHOMEVER AND ASK FOR A FULL REFUND OR I'M FILING AN COMPLAINT AND SMALL CLAMS FOR 30 YRS WORTH. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10853201
Mileage unknown · Apr 19, 2012
Engine And Engine CoolingFuel System, Gasoline
THIS TRUCK HAS SEVERAL EXHAUST HEADER BOLTS THAT ARE BREAKING OFF. THIS IS A MAJOR DEFECT AND SHOULD BE A RECALL TO REPLACE THE EXHAUST HEADER BOLTS THEY SHOULD NOT BE BREAKING OFF AND THEY ARE CAUSING EMISSION ERRORS AND NEEDING MAJOR REPAIRS. *JS
NHTSA ODI #10455735
Mileage unknown · Feb 14, 2012
Engine And Engine Cooling
EXHAUST MANIFOLD BOLTS BREAKING OFF LEAVING STUDS IN THE HEADS GM IS NOT STANDING BEHIND THIS ISSUE. THIS IS CAUSING CO RELEASE, HIGH HEAT IN THE ENGINE COMPARTMENT, NOISE, AND AN EXPENSE THAT I SHOULD NOT PAY FOR. SOME STATES ARE NOT ACCEPTING THESE VEHICLES NOW FOR NOT MEETING THE EMISSION STANDARDS PLEASE LOOK IN TO THIS. …
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EXHAUST MANIFOLD BOLTS BREAKING OFF LEAVING STUDS IN THE HEADS GM IS NOT STANDING BEHIND THIS ISSUE. THIS IS CAUSING CO RELEASE, HIGH HEAT IN THE ENGINE COMPARTMENT, NOISE, AND AN EXPENSE THAT I SHOULD NOT PAY FOR. SOME STATES ARE NOT ACCEPTING THESE VEHICLES NOW FOR NOT MEETING THE EMISSION STANDARDS PLEASE LOOK IN TO THIS. IT IS A SAFETY HAZARD. *TR
NHTSA ODI #10447953
26,000 miles · Nov 11, 2008
Engine And Engine CoolingPower TrainService Brakes, Hydraulic
NORMAL DRIVING LESS THAN 10 MILES. THE FAILURES ARE MANY AND OFTEN. TRANSMISSION FAILURES EVERY FEW THOUSAND MILES. ALWAYS LEAKS TRANS FLDS ALL OVER STREETS AND DRIVEWAYS. SERVICE ENGINE LIGHT ON. CHEVROLET DEALER ERASED FAILURE AND DIAGNOSTIC CODES TO GOUGE CONSUMER, MANY TIMES. PARKING BRAKE CABLE SNAPPED IN TWO ON DRIVEWAY.…
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NORMAL DRIVING LESS THAN 10 MILES. THE FAILURES ARE MANY AND OFTEN. TRANSMISSION FAILURES EVERY FEW THOUSAND MILES. ALWAYS LEAKS TRANS FLDS ALL OVER STREETS AND DRIVEWAYS. SERVICE ENGINE LIGHT ON. CHEVROLET DEALER ERASED FAILURE AND DIAGNOSTIC CODES TO GOUGE CONSUMER, MANY TIMES. PARKING BRAKE CABLE SNAPPED IN TWO ON DRIVEWAY. ABS FAILURES AT LOW SPEEDS AND ENGINE KLACKS LOUD WHEN STARTING. I AM ORIGINAL OWNER OF A DEFECTIVE 2001 CHEVROLET SILVERADO. THE LAST TIME GMPP WITH GM DEALER REPAIR THE UNDERWARRANTY REPAIRS TOOK 6 WEEKS THERE ARE ONLY 26.000 MILES ON THIS TRUCK. OBVIOUSLY THIS IS A DEFECT IN ITS DESIGN AND APPLICATION. (SEE PTIOR COMPLAINTS) TIRES FLEW OFF, ALTERING OF SERVICE CONTRACTS ON AND ON. *TR
NHTSA ODI #10248431
Mileage unknown · Jan 31, 2008
Engine And Engine Cooling
ON CERTAIN MODELS OF THE SILVERADO THERE IN A ENGINE NOISE DUE TO FAILURE OF POSITION SKIRTS AND WILL EVENTUALLY CAUSE LOSS OF POWER MORE EMISSIONS AND GM WILL DO NOTHING ABOUT THIS PROBLEM. *TR
NHTSA ODI #10216639
15,000 miles · Jan 23, 2008
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING AT ANY SPEED OR WHILE MAKING A TURN, THE VEHICLE STALLS INTERMITTENTLY AND HAS TO BE RESTARTED. THE VEHICLE WAS TAKEN TO THE DEALER FOUR TIMES, BUT THEY CANNOT DUPLICATE THE FAILURE. THERE WERE NO RECALLS AVAILABLE. THE CURRENT MILEAGE WAS 86,000 AND FAILURE …
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING AT ANY SPEED OR WHILE MAKING A TURN, THE VEHICLE STALLS INTERMITTENTLY AND HAS TO BE RESTARTED. THE VEHICLE WAS TAKEN TO THE DEALER FOUR TIMES, BUT THEY CANNOT DUPLICATE THE FAILURE. THERE WERE NO RECALLS AVAILABLE. THE CURRENT MILEAGE WAS 86,000 AND FAILURE MILEAGE WAS 15,000. UPDATED 02-19-08 *BF UPDATED 02/14/08 *TR
NHTSA ODI #10215762
Mileage unknown · Jan 6, 2005
Electrical SystemEngine And Engine CoolingExterior Lighting
THE CONSUMER REQUESTED ASSISTANCE FOR 15 FAILURES AND OR PROBLEMS WITH GM 2001 CHEVY TRUCK. *BF THE STEERING ROD ASSEMBLY WOULD POP WHEN THE STEERING WHEEL WAS TURNED, THE SHIFTER BOOT RIPPED IMMEDIATELY, THE TAILGATE STRAPS BROKE AND BENT THE TAILGATE, THE PCV VALVE WAS USING 4 QUARTS OF OIL AND THE DEALER WAS UNABLE TO FIN…
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THE CONSUMER REQUESTED ASSISTANCE FOR 15 FAILURES AND OR PROBLEMS WITH GM 2001 CHEVY TRUCK. *BF THE STEERING ROD ASSEMBLY WOULD POP WHEN THE STEERING WHEEL WAS TURNED, THE SHIFTER BOOT RIPPED IMMEDIATELY, THE TAILGATE STRAPS BROKE AND BENT THE TAILGATE, THE PCV VALVE WAS USING 4 QUARTS OF OIL AND THE DEALER WAS UNABLE TO FIND THE PROBLEM, THE BATTERY EXPLODED AT 40K MILES, THE RIGHT REAR BRAKE ON THE INSIDE HAD WORN DOWN THE METAL, THE LIGHTS ON THE STEREO BURNED OUT, THE LIGHTS HAD BURNED OUT, THE VALVE COVER WERE LEAKING OIL BEFORE 100K MILES, THE FUR WHEEL DRIVE SWITCH HAD BROKEN AT 50K MILES, THE TRANSMISSION DID NOT SHIFT AT 1K MILES AND THE DEALERS WERE UNABLE TO FIND THE PROBLEM, THE ENGINE EXPERIENCED A PRE-IGNITION KNOCK AND THE DEALER WAS UNABLE TO FIND THE PROBLEM, THE DRIVER'S SEAT CONTROLS RIPPED AT 60K MILES, THE TRANSMISSION HAD COMPLETE GONE OUT AT 118K MILES AND THE SEAT BELTS LATCH SYSTEM HAD BECOME DEFECTIVE. *SC
NHTSA ODI #10109401
70,000 miles · Sep 22, 2004
Engine And Engine CoolingExterior LightingParking BrakeInjury
PARKING BRAKE, DAY TIME RUNNING LIGHTS, O2 SENSOR, UEL GAUGE . *AK
NHTSA ODI #10093032
20,000 miles · May 21, 2004
Engine And Engine CoolingExterior LightingParking Brake
PARKING BRAKE HASN'T WORKED SINCE AROUND 20000 MILES, BRAKE WILL DEPRESS, BUT WON'T KEEP TRUCK FROM ROLLING. LOUD PISTON SLAP, KNOCKING FROM ENGINE MOSTLY WHEN ENGINE IS COLD, GOES AWAY AFTER WARMED UP. THIS IS A Z71 AND THE 4 WHEEL DRIVE BUTTONS DO NOT WORK ALL THE TIME WHEN TRYING TO PUT INTO 4 WHEEL DRIVE. POWER MIRRORS DON'T…
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PARKING BRAKE HASN'T WORKED SINCE AROUND 20000 MILES, BRAKE WILL DEPRESS, BUT WON'T KEEP TRUCK FROM ROLLING. LOUD PISTON SLAP, KNOCKING FROM ENGINE MOSTLY WHEN ENGINE IS COLD, GOES AWAY AFTER WARMED UP. THIS IS A Z71 AND THE 4 WHEEL DRIVE BUTTONS DO NOT WORK ALL THE TIME WHEN TRYING TO PUT INTO 4 WHEEL DRIVE. POWER MIRRORS DON'T WORK A LOT OF THE TIME. AT LEAST ONE OF THE FRONT RUNNING LIGHTS STAY BURNED OUT MOST OF THE TIME. TRUCK IS OUT OF WARRANTY NOW BUT THESE PROBLEMS HAVE EXISTED FOR A LONG TIME. A LOT OF OTHER TRUCKS OF THIS SAME MODEL HAVE ALL THE SAME PROBLEMS. GM SHOULD ADDRESS THESE PROBLEMS AND MAKE THEM RIGHT AT NO COST TO THE CONSUMER.*AK
NHTSA ODI #10072959
12,000 miles · Jan 1, 2004
Electrical SystemEngine And Engine CoolingParking Brake
NOTHING BUT PROBLEMS WITH TRUCK. FIRST WAS THE SLIP YOKE IN THE DRIVE SHAFT, FELT LIKE TRANNY WAS SLIPPING FROM TAKE OFF AT START POSITION. REPLACED UNDER WARRANTY.*AK ANTI-LOCK BRAKES WOULD COME ON WITH EVERY STOP. USUALLY AT VERY SLOW SPEEDS, CAUSING TRUCK TO EXCEED 5-10 FT FURTHER THAN IT SHOULD HAVE. HAD FRONT WHEEL …
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NOTHING BUT PROBLEMS WITH TRUCK. FIRST WAS THE SLIP YOKE IN THE DRIVE SHAFT, FELT LIKE TRANNY WAS SLIPPING FROM TAKE OFF AT START POSITION. REPLACED UNDER WARRANTY.*AK ANTI-LOCK BRAKES WOULD COME ON WITH EVERY STOP. USUALLY AT VERY SLOW SPEEDS, CAUSING TRUCK TO EXCEED 5-10 FT FURTHER THAN IT SHOULD HAVE. HAD FRONT WHEEL BEARING REPLACED, FIXED FOR SOME TIME DOING IT AGAIN. ALSO IN THE MEAN TIME, HAD TO HAVE ALL BRAKES AND ROTORS REPLACED. BRAKE SYSTEM IS AWFUL. THIS COULD CAUSE ACCIDENTS. ALSO, HAS COLD ENGINE KNOCK, VERY LOUD KNOCK, NOT A NORMAL KNOCK. SOMETHING ISNT RIGHT WITH THIS. DONE THIS SINCE A LITTLE OVER 20,000 MILES, WORSE WHEN TEMPERATURES OUTSIDE ARE LOW. HAD TO HAVE 4X4 SWITCH ON DASH REPLACED. KEPT GETTING SERVICE 4WD UNIT. OUT OF WARRANTY AT THIS TIME. I KNOW OF AT LEAST 4 OTHER WITH ALL SAME PROBLEMS. STILL NOTHING DONE WITH GM, SOMETHING SHOULD BE DONE. ESPECIALLY WITH THE BRAKE SYSTEM. SAFETY HAZARD.
NHTSA ODI #10051467
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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