NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
181 reports4,000 miles · Sep 19, 2025
Air BagsPower TrainCrashInjury
The contact owns a 1995 N/A GMC Sierra 1500. The contact stated that after parking, turning the vehicle off, and exiting, the vehicle suddenly rolled forward, down a slight incline, and crashed into another parked vehicle. The cause of the failure was not determined. The manufacturer and local dealer were not contacted regarding…
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The contact owns a 1995 N/A GMC Sierra 1500. The contact stated that after parking, turning the vehicle off, and exiting, the vehicle suddenly rolled forward, down a slight incline, and crashed into another parked vehicle. The cause of the failure was not determined. The manufacturer and local dealer were not contacted regarding the failure. In addition, while making a left turn into an intersection, a second vehicle crashed into the front of the vehicle. During the crash, no air bags deployed. The contact sustained injuries to both the shoulder and the chest. No medical treatment was required. A police report was filed at the scene. The cause of the failure was not determined. No further information was available. The VIN was not available. The failure mileage was 4,000.
NHTSA ODI #11688357
Mileage unknown · Sep 12, 2025
Service Brakes
No wreck
NHTSA ODI #11686984
Mileage unknown · Feb 6, 2025
Seat Belts
The contact owns a 1999 N/A GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 00V097000 (SEAT BELTS); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of th…
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The contact owns a 1999 N/A GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 00V097000 (SEAT BELTS); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
NHTSA ODI #11641210
270,000 miles · Jan 22, 2021
Power Train
THE NP246 TRANSFER CASE OIL PUMP PLATE WEARS A HOLE INTO THE CASE, CAUSING IT TO LEAK. THERE IS A SAVER PLATE THAT CAN BE INSTALLED THAT PREVENTS THIS PROBLEM.
NHTSA ODI #11389425
270,000 miles · Jun 2, 2020
EnginePower TrainSuspension
I'VE HAD SEVERAL PROBLEMS WITH THE TRUCK SINCE I BOUGHT IT 3 MONTHS AGO. I'VE FIXED ALMOST ALL OF THEM-ABS WAS ACTIVATING WHICH WAS PUSHING ME INTO TRAFFIC NEARLY CAUSING A WRECK SO I CHANGED THE ABS SPEED SENSOR AND HUB ASSEMBLY. FRONT SUSPENSION WAS GONE SO I REPLACED THAT; AS WELL AS STEERING PARTS, BRAKES, THE PARKING BRAKE …
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I'VE HAD SEVERAL PROBLEMS WITH THE TRUCK SINCE I BOUGHT IT 3 MONTHS AGO. I'VE FIXED ALMOST ALL OF THEM-ABS WAS ACTIVATING WHICH WAS PUSHING ME INTO TRAFFIC NEARLY CAUSING A WRECK SO I CHANGED THE ABS SPEED SENSOR AND HUB ASSEMBLY. FRONT SUSPENSION WAS GONE SO I REPLACED THAT; AS WELL AS STEERING PARTS, BRAKES, THE PARKING BRAKE DOESN'T WORK, FIXING IT NEXT. OIL SENDING UNIT, A/C BELT AND REFRIGERANT REPLACED. THE PROBLEMS LEFT ARE EVAP EMISSION VENT VALVE SOLENOID, THROTTLE PEDAL POSITION SENSOR, AND RANDOM/ MULTIPLE CYLINDER MISFIRE SOMETIMES AND CYLINDER 4 MISFIRE OTHER TIMES. IN 4X4 WHEN IT GETS UNDER A LOAD SOMETHING SOUNDS LIKE IT'S BINDING UP AND IT POPS BUT IT STILL WORKS. WHEN I SHIFT INTO DRIVE OR REVERSE OR ACCELERATE FROM A STOP IT HAS A SHIFT FEELING IN THE REAR WITH A THUMP SOUND. SOMETIMES I CAN PUSH THE GAS AND IT WON'T DOWNSHIFT TO SPEED UP WHEN I'M ON THE HWY BUT THAT'S PROBABLY THE TPPS. I JUST WANT MY 4X4 WORKING AND MY SHIFT THUMP FROM A STOP TO GO AWAY. HELP. IN 4X4 THE NOISE HAPPENS IN FWD REVERSE AND WHEN TURNING AND WORSE IN 4LO BUT HAPPENS IN 4HI AND AUTO BUT NOT IN 2HI. *TR
NHTSA ODI #11326914
190,000 miles · Aug 20, 2019
Service Brakes
TL* THE CONTACT OWNS A 2000 GMC SIERRA 1500. WHILE DRIVING AT A LOW RATE OF SPEED, THE BRAKE PEDAL WOULD NOT ENGAGE UNLESS EXCESSIVE FORCE WAS APPLIED. WHEN THE CONTACT APPLIED PRESSURE TO THE BRAKE PEDAL, THE ABS ENGAGED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE DEALER AND MANUFACTURER WERE NOT NOTIFIED. THE FAILURE MILEA…
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TL* THE CONTACT OWNS A 2000 GMC SIERRA 1500. WHILE DRIVING AT A LOW RATE OF SPEED, THE BRAKE PEDAL WOULD NOT ENGAGE UNLESS EXCESSIVE FORCE WAS APPLIED. WHEN THE CONTACT APPLIED PRESSURE TO THE BRAKE PEDAL, THE ABS ENGAGED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE DEALER AND MANUFACTURER WERE NOT NOTIFIED. THE FAILURE MILEAGE WAS 190,000.
NHTSA ODI #11245279
Mileage unknown · Apr 29, 2019
Air Bags
I BOUGHT THIS TRUCK FROM A USED CAR DEALERSHIP IN BLAIR, NE WASHINGTON COUNTY. THE DEALERSHIP SOLD THIS TRUCK TO ME WITH REPLACED AIRBAGS THAT DIDN'T WORK. THEY REPLACED THE ORIGINAL FACTORY AIR BAGS WITH WHAT NOW ARE MARKED CHEVROLET AND NOT GMC ACCORDING TO MECHANICAL SHOP. SAME MECHANIC EXPRESSED TO ME THAT THIS TRUCK WAS …
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I BOUGHT THIS TRUCK FROM A USED CAR DEALERSHIP IN BLAIR, NE WASHINGTON COUNTY. THE DEALERSHIP SOLD THIS TRUCK TO ME WITH REPLACED AIRBAGS THAT DIDN'T WORK. THEY REPLACED THE ORIGINAL FACTORY AIR BAGS WITH WHAT NOW ARE MARKED CHEVROLET AND NOT GMC ACCORDING TO MECHANICAL SHOP. SAME MECHANIC EXPRESSED TO ME THAT THIS TRUCK WAS IN ACCIDENT THAT NOT ONLY BENT THE FRAME BUT ALSO CAUSED THE ORIGINAL AIR BAGS TO DEPLOY. WHEN I PICKED UP TRUCK AFTER SALE I ASKED THE DEALERSHIP OWNER WHY THE LIGHT WAS ON, HE SAID HIS MECHANIC COULD FIX IT. HIS MECHANIC COULD ONLY WORK MONDAY THRU THURSDAY WHICH MADE MAKING ANY APPOINTMENT IMPOSSIBLE FOR ME, SO I TOOK IT TO AN AUTHORIZED DEALER TO LOOK AT IT AND THAT IS WHEN I FOUND THE AIRBAGS HAD BEEN REPLACED IMPROPERLY. I FILED A COMPLAINT WITH THE NE DEPARTMENT OF VEHICLES AND WAS TOLD TO FILE A FEDERAL COMPLAINT ABOUT THE AIRBAGS. THANK YOU FOR YOUR TIME
NHTSA ODI #11204381
Mileage unknown · Apr 12, 2019
Electrical SystemService Brakes
TL* THE CONTACT OWNS A 2000 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE WAS REPAIRED PER NHTSA CAMPAIGN NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC) BY WEHR FORD (11311 US-60 BUS, MOUNTAIN GROVE, MO 65711, (417) 926-3192). THE CONTACT STATED THAT THE DEALER ONLY CLEANED THE ABS SENSOR FOR CORROSION. YEARS LATER, THE BR…
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TL* THE CONTACT OWNS A 2000 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE WAS REPAIRED PER NHTSA CAMPAIGN NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC) BY WEHR FORD (11311 US-60 BUS, MOUNTAIN GROVE, MO 65711, (417) 926-3192). THE CONTACT STATED THAT THE DEALER ONLY CLEANED THE ABS SENSOR FOR CORROSION. YEARS LATER, THE BRAKE PEDAL FAILED TO RESPOND DUE TO INTERNAL CORROSION REGARDING THE SENSOR. ALSO, THE ABS KEPT INTERMITTENTLY ACTIVATING AND CAUSED EXTREME DIFFICULTY WHEN BRAKING. THE BRAKE PEDAL FAILED TO STOP THE VEHICLE AND CAUSED THE DRIVER TO HAVE TO REVERSE MORE THAN TWICE TO PREVENT A CRASH. THE DEALER WAS NOTIFIED OF THE FAILURES AND INDICATED THAT THE ABS SENSOR MAY NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS NOT AVAILABLE.
NHTSA ODI #11195833
140,000 miles · Nov 24, 2018
Service Brakes
WENT TO STOP AND THE BRAKE PEDAL PUSHED AGAINST MY FOOT INSTEAD OF GOING DOWN. WAS MOVING SLOWLY AND THE BRAKE PEDAL INSTEAD OF STOPPING THE CAR PUSHED MY FOOT UP FROM THE BRAKE PEDAL AND I WENT OVER A PARKING BRAKE. MECHANIC VERIFIED THAT WHEN WHEEL SENSOR GOES BAD THE VEHICLE THINKS THE BRAKES ARE LOCKING UP AND THE ABS SYS…
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WENT TO STOP AND THE BRAKE PEDAL PUSHED AGAINST MY FOOT INSTEAD OF GOING DOWN. WAS MOVING SLOWLY AND THE BRAKE PEDAL INSTEAD OF STOPPING THE CAR PUSHED MY FOOT UP FROM THE BRAKE PEDAL AND I WENT OVER A PARKING BRAKE. MECHANIC VERIFIED THAT WHEN WHEEL SENSOR GOES BAD THE VEHICLE THINKS THE BRAKES ARE LOCKING UP AND THE ABS SYSTEM GOES ON PUMPING BRAKE PEDAL. HAPPENED MULTIPLE TIMES AS APPROACHED STOP LIGHTS PUSHING ME INTO INTERSECTION INSTEAD OF STOPPING.. I BELIEVE WHEN THE WHEEL SENSOR IS BAD IT SHOULD NOT PUT ME OR OTHERS IN A DANGEROUS SITUATION.
NHTSA ODI #11153550
240,000 miles · Apr 2, 2018
Service Brakes
DURING A NORMAL STOP AT A STOP SIGN ON A RURAL ROAD, A STEEL BRAKE LINE RUPTURED DUE TO EXCESS CORROSION. THIS ONE LINE BETWEEN THE MASTER CYLINDER AND ABS MODULE IS THE ONLY LINE THAT PROVIDES PRESSURE TO THE FRONT BRAKES, WHICH SUPPLY ROUGHLY 75% OF THE VEHICLE'S BRAKING POWER. THE RUPTURE RESULTED IN RAPID FLUID LOSS AND THER…
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DURING A NORMAL STOP AT A STOP SIGN ON A RURAL ROAD, A STEEL BRAKE LINE RUPTURED DUE TO EXCESS CORROSION. THIS ONE LINE BETWEEN THE MASTER CYLINDER AND ABS MODULE IS THE ONLY LINE THAT PROVIDES PRESSURE TO THE FRONT BRAKES, WHICH SUPPLY ROUGHLY 75% OF THE VEHICLE'S BRAKING POWER. THE RUPTURE RESULTED IN RAPID FLUID LOSS AND THEREFORE A LACK OF PRESSURE IN THE HYDRAULIC SYSTEM TO ALLOW FOR ADEQUATE BRAKING. NEEDED TO SWERVE INTO A DITCH TO AVOID A CRASH WITH CROSS TRAFFIC.VISUAL INSPECTION INDICATES MOST BRAKE LINES ARE EXTREMELY CORRODED, AND WERE OBVIOUSLY MADE WITH SUBSTANDARD MATERIALS AS COMPARED TO OTHER MANUFACTURERS. I DO RECOGNIZE THAT THIS IS AN OLD VEHICLE, HOWEVER OTHER VEHICLES OF SIMILAR AGE AND DRIVEN IN SIMILAR ENVIRONMENTS DO NOT HAVE THIS ISSUE. ONLINE RESEARCH, MOST NOTABLY THE COMPLAINTS FILED TO NHTSA, INDICATE THIS IS A COMMON PROBLEM WITH CHEVY/GMC TRUCKS OF THIS ERA. ALTHOUGH OTHER OEM'S (SUBARU) HAVE ISSUED RECALLS IN SIMILAR SITUATIONS, IT APPEARS THAT THE GM THAT THE PUBLIC BAILED OUT JUST A FEW YEARS AGO HAS DECIDED TO DENY THAT THIS IS A PROBLEM, GAMBLING THAT THE THE COST OF LAWSUITS ASSOCIATED WITH DEATHS DO NOT EXCEED THE COST OF A RECALL.
NHTSA ODI #11082615
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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