NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
468 reports120,000 miles · Oct 12, 2008
Air BagsParking BrakeTiresCrashInjury
I WAS IN A CAR ACCIDENT. WHILE DRIVING, I DON'T KNOW WHAT HAPPENED BUT SOMETHING CAUSED MY TRUCK TO ROLL OVER. EARLIER THAT DAY I REMEMBER THAT MY PARKING BRAKE WOULD NOT WORK. I ALSO HAD SOME TROUBLE PUTTING THE GEAR INTO PARK. MY AIRBAGS DIDN'T DEPLOY DURING THIS ACCIDENT, AND I WAS DRIVING WITH CRUISE CONTROL ON IF THAT HAS A…
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I WAS IN A CAR ACCIDENT. WHILE DRIVING, I DON'T KNOW WHAT HAPPENED BUT SOMETHING CAUSED MY TRUCK TO ROLL OVER. EARLIER THAT DAY I REMEMBER THAT MY PARKING BRAKE WOULD NOT WORK. I ALSO HAD SOME TROUBLE PUTTING THE GEAR INTO PARK. MY AIRBAGS DIDN'T DEPLOY DURING THIS ACCIDENT, AND I WAS DRIVING WITH CRUISE CONTROL ON IF THAT HAS ANY BEARING ON THIS. ALSO, MY FRONT TIRES WERE ALWAYS NEEDING AIR. *TR
NHTSA ODI #10245168
50,000 miles · Sep 25, 2008
Service Brakes, HydraulicCrash
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. IN 2005, THE ANTILOCK BRAKING SYSTEM WOULD ENGAGE WHILE DRIVING 20 MPH. THIS ALSO INCREASED THE STOPPING DISTANCE OF THE VEHICLE, WHICH EVENTUALLY LED TO A MINOR CRASH. A POLICE REPORT WAS FILED. THE CONTACT TOOK THE VEHICLE TO A REPAIR SHOP. BODY WORK WAS PERFORMED, BUT …
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. IN 2005, THE ANTILOCK BRAKING SYSTEM WOULD ENGAGE WHILE DRIVING 20 MPH. THIS ALSO INCREASED THE STOPPING DISTANCE OF THE VEHICLE, WHICH EVENTUALLY LED TO A MINOR CRASH. A POLICE REPORT WAS FILED. THE CONTACT TOOK THE VEHICLE TO A REPAIR SHOP. BODY WORK WAS PERFORMED, BUT NO REPAIRS WERE MADE TO THE BRAKING SYSTEM. AFTER THE CRASH, THE CONTACT BEGAN TO NOTICE THAT THE ABS WOULD RANDOMLY ENGAGE WHILE DRIVING AT LOW SPEEDS. APPROXIMATELY ONE MONTH LATER, HE RECEIVED A RECALL NOTICE RELATING TO THE ABS. HE TOOK THE VEHICLE TO A DEALER AND THEY STATED THAT IT COULD NOT BE REPAIRED BECAUSE IT WAS A PRODUCT LIABILITY. THEY FURTHER STATED THAT A GM REPRESENTATIVE NEEDED TO INSPECT THE VEHICLE PRIOR TO IT BEING REPAIRED. THE CONTACT TOOK THE VEHICLE TO A DIFFERENT GM DEALER AND THEY REPAIRED THE VEHICLE. APPROXIMATELY SIX OR SEVEN MONTHS LATER, THE ABS FAILURE RECURRED. HE TOOK THE VEHICLE BACK TO THE DEALER AND WAS INFORMED THAT AN ENTIRELY NEW BRAKING SYSTEM WAS NEEDED. THE DEALER REPLACED THE ROTORS AND SHOCKS; HOWEVER, THE FAILURE HAS BEGUN TO RECUR A YEAR AND A HALF LATER. THE ABS IS CURRENTLY ENGAGING AGAIN AND ALMOST CAUSES REAR END CRASHES. THE CONTACT BELIEVES THAT A SECONDARY RECALL NEEDS TO BE ISSUED TO PROPERLY REPAIR THIS DEFECT. THE NHTSA CAMPAIGN ID NUMBER WAS UNKNOWN. THE FAILURE MILEAGE WAS 50,000 AND CURRENT MILEAGE WAS 71,000.
NHTSA ODI #10243430
53,242 miles · Sep 4, 2008
Service Brakes, Hydraulic
THE FRONT WHEEL HUBS ON MY 2001 SILVERADO HAD TO BE REPLACED DUE TO ABS SENSORS NOT WORKING PROPERLY AT LOW BRAKE SPEEDS. I UNDERSTAND CHEVY ISSUED A RECALL CONCERNING THIS PROBLEM, I NEVER RECIEVED ANY NOTICE OF THIS PROBLEM OR ANY OTHER RECALL NOTICES. IT COST ME $744,99 TO HAVE THIS WORK DONE. I FEEL THIS IS A CHEVY DEFECT A…
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THE FRONT WHEEL HUBS ON MY 2001 SILVERADO HAD TO BE REPLACED DUE TO ABS SENSORS NOT WORKING PROPERLY AT LOW BRAKE SPEEDS. I UNDERSTAND CHEVY ISSUED A RECALL CONCERNING THIS PROBLEM, I NEVER RECIEVED ANY NOTICE OF THIS PROBLEM OR ANY OTHER RECALL NOTICES. IT COST ME $744,99 TO HAVE THIS WORK DONE. I FEEL THIS IS A CHEVY DEFECT AND THEY SHOULD HAVE BEEN MADE TO REPLACE THESE ABS SENSORS SINCE IT IS A SAFETY HAZARD AND THERE PROBLEM FROM THE ORGINAL DESIGN. MY TRUCK IS OF COURSE OUT OF WARRANTY AT 53,256 MILES.
NHTSA ODI #10240866
104,000 miles · Aug 21, 2008
Service Brakes, Hydraulic
WHEN DRIVING ON CITY STREETS IN PHOENIX I WILL PRESS ON THE BRAKE PEDAL AND THE PEDAL WILL DROP. THIS HAPPENS MOSTLY WHEN THERE ARE BUMPS OR ROUGH PAVEMENT. I HAVE TO QUICKLY PUMP THE BRAKE PEDAL TO GET BRAKES BAKE. THIS HAS BEEN GOING ON SINCE I BOUGHT THE TRUCK IN 2003. *TR
NHTSA ODI #10239159
135,000 miles · Aug 18, 2008
Power Train
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING 70 MPH, THE VEHICLE SWITCHED FROM TWO WHEEL TO FOUR WHEEL DRIVE AUTOMATICALLY. AS A RESULT, THE TRANSFER CASE DETACHED FROM THE BACK OF THE TRANSMISSION AND THE DRIVESHAFT FELL OUT AND LOCKED UP THE VEHICLE. THE FOUR WHEEL DRIVE LIGHT ILLUMINATED PRIOR TO THE F…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING 70 MPH, THE VEHICLE SWITCHED FROM TWO WHEEL TO FOUR WHEEL DRIVE AUTOMATICALLY. AS A RESULT, THE TRANSFER CASE DETACHED FROM THE BACK OF THE TRANSMISSION AND THE DRIVESHAFT FELL OUT AND LOCKED UP THE VEHICLE. THE FOUR WHEEL DRIVE LIGHT ILLUMINATED PRIOR TO THE FAILURE. THE CONTACT DID NOT DRIVE OVER A POTHOLE. THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE FOR REPAIR. THE FAILURE MILEAGE WAS 135,000.
NHTSA ODI #10238747
103,000 miles · Aug 11, 2008
Tires
COPPER TIRES THE TREAD IS COMING APART BIG RIPS IN LUGS DOT# 3D11-CN6-4905 BOUGHT IN JULY 13-06 ALL 4 TIRES. *TR
NHTSA ODI #10237657
100,400 miles · Jul 31, 2008
Parking Brake
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO. THE CONTACT TOOK THE VEHICLE TO THE MECHANIC TO HAVE THE BRAKES REPAIRED. AS THE MECHANIC WAS CHANGING THE BRAKES THE MECHANIC NOTICE THAT THE PARKING BRAKES WERE WORN OUT. THE MECHANIC INFORMED THE CONTACT TO REPLACE THE PARK BRAKES ON THE VEHICLE DUE TO THE FACT THAT IF THE …
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO. THE CONTACT TOOK THE VEHICLE TO THE MECHANIC TO HAVE THE BRAKES REPAIRED. AS THE MECHANIC WAS CHANGING THE BRAKES THE MECHANIC NOTICE THAT THE PARKING BRAKES WERE WORN OUT. THE MECHANIC INFORMED THE CONTACT TO REPLACE THE PARK BRAKES ON THE VEHICLE DUE TO THE FACT THAT IF THE CONTACT APPLIES THE PARKING BRAKE THE VEHICLE CAN ROLL DOWN A HILL AND CAUSE A CRASH. CONTACT WAS INFORMED THAT THERE WAS A RECALL(05V161000) BUT IS UNSUCCESSFUL GETTING THE VEHICLE REPAIRED BECAUSE THE RECALL IS ONLY FOR MANUAL VEHICLE AND THE CONTACT OWN A AUTOMATIC. THE CURRENT AND FAILURE MILEAGES WERE 100,400.
NHTSA ODI #10236559
35,372 miles · Jul 28, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING 5 MPH, THE ABS ENGAGED, THE WHEELS LOCKED, AND THE VEHICLE WOULD NOT STOP. EVER SINCE THAT TIME, THE ABS HAS CONTINUED TO ENGAGE. THE DEALER STATED THAT THE RECALL REPAIR HAD PREVIOUSLY BEEN PERFORMED ON THE VEHICLE IN MAY OF 2004. THE CONTACT BELIEVES THAT S…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING 5 MPH, THE ABS ENGAGED, THE WHEELS LOCKED, AND THE VEHICLE WOULD NOT STOP. EVER SINCE THAT TIME, THE ABS HAS CONTINUED TO ENGAGE. THE DEALER STATED THAT THE RECALL REPAIR HAD PREVIOUSLY BEEN PERFORMED ON THE VEHICLE IN MAY OF 2004. THE CONTACT BELIEVES THAT SOMETHING WAS NOT DONE CORRECTLY DURING THE RECALL REPAIR FOR THE ABS TO FAIL AGAIN. THE CURRENT MILEAGE WAS 70,000 AND FAILURE MILEAGE WAS 35,000. UPDATED 10/16/08 *BF THE DEALER DETERMINED THE ABS FRONT SPEED SENSORS, BOTH LEFT AND RIGHT NEEDED TOB E REPLACED. A RECALL WAS ISSUED LATER AND THE CONSUMER WAS REIMBURSED, HOWEVER IN JULY 2008, THE ABS BEGAN TO ENGAGE AGAIN AT LOW SPEEDS. AGAIN, THE RIGHT FRONT SPEEDSENSOR WAS BAD. UPDATED 10/20/08. *JB
NHTSA ODI #10236114
41,000 miles · Jul 13, 2008
Electrical SystemFuel System, Other
THE FUEL SENDING UNIT IN MY TRUCK FAILED AT ~ 41K MILES AND SENDS FAULTY SIGNALS TO THE GAUGE IN THE INSTRUMENT CLUSTER. THE LEVEL INDICATED ON THE GAUGE FLUCTUATES BUT USUALLY READS EMPTY WHICH LEADS TO A VERY BRIGHT YELLOW "LOW FUEL" INDICATOR IN MY MESSAGE CENTER. I KNOW OF AT LEAST 4 OTHER INDIVIDUALS WHO OWN THE SAME MAKE…
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THE FUEL SENDING UNIT IN MY TRUCK FAILED AT ~ 41K MILES AND SENDS FAULTY SIGNALS TO THE GAUGE IN THE INSTRUMENT CLUSTER. THE LEVEL INDICATED ON THE GAUGE FLUCTUATES BUT USUALLY READS EMPTY WHICH LEADS TO A VERY BRIGHT YELLOW "LOW FUEL" INDICATOR IN MY MESSAGE CENTER. I KNOW OF AT LEAST 4 OTHER INDIVIDUALS WHO OWN THE SAME MAKE/MODEL FROM 1999-2001 THAT HAVE THE SAME PROBLEM. THIS IS A SAFETY ISSUE BECAUSE 1) I NEVER KNOW HOW MUCH FUEL IS REALLY IN MY TRUCKS GAS TANK AND COULD BE LEFT STRANDED ON THE SIDE OF ANY HIGHWAY AT ANY TIME, AND 2) THE BRIGHT YELLOW "LOW FUEL" INDICATOR IN THE MESSAGE CENTER THAT STAYS ON NEARLY CONSTANTLY IS EXTREMELY DISTRACTING WHILE DRIVING AT NIGHT. MY ACQUAINTANCES AND I HAVE ALL NOTIFIED THE CHEVROLET DEALER OF OUR PROBLEM AND HAVE BEEN TOLD "CHEVY KNOWS ABOUT THE PROBLEM BUT WILL NOT ISSUE A RECALL" (PARAPHRASING). *TR
NHTSA ODI #10234112
65,362 miles · Jul 8, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING BETWEEN 5-10 MPH WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE DID NOT STOP. THE SPEED SENSORS HAVE BEEN CLEANED TWO OR THREE TIMES. ON JUNE 4, 2008, THE BRAKE SENSORS WERE REPLACED AT THE COST OF MORE THAN $500. NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAK…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING BETWEEN 5-10 MPH WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE DID NOT STOP. THE SPEED SENSORS HAVE BEEN CLEANED TWO OR THREE TIMES. ON JUNE 4, 2008, THE BRAKE SENSORS WERE REPLACED AT THE COST OF MORE THAN $500. NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK) WAS REFERENCED. THE CURRENT MILEAGE WAS 67,000 AND FAILURE MILEAGE WAS 65,362. UPDATED 07/29/08.*LJ UPDATED 08/05/08
NHTSA ODI #10233495
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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