NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
509 reports130,000 miles · Jul 8, 2015
Service Brakes
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTIFICATION FOR THE BRAKES ON THE VEHICLE. THE VEHICLE WAS REPAIRED. AFTER THE RECALL REPAIR WAS PERFORMED, THE BRAKES PULSATED WHEN APPLIED. THE DEALER STATED THAT THE FAILURE WAS DUE TO AN AFTERMARKET WHEEL BEARING. THE CONTACT STATED THAT THE…
Read full complaint
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTIFICATION FOR THE BRAKES ON THE VEHICLE. THE VEHICLE WAS REPAIRED. AFTER THE RECALL REPAIR WAS PERFORMED, THE BRAKES PULSATED WHEN APPLIED. THE DEALER STATED THAT THE FAILURE WAS DUE TO AN AFTERMARKET WHEEL BEARING. THE CONTACT STATED THAT THE BRAKES WORKED EXCEPTIONALLY WELL PRIOR TO THE REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE; HOWEVER THE CONTACT WAS NOT OFFERED A REMEDY. THE NHTSA CAMPAIGN NUMBER WAS UNKNOWN. THE FAILURE MILEAGE WAS 130,000. UPDATED 09/10/15*LJ UPDATED 11/08/2017*CN
NHTSA ODI #10732808
156,323 miles · Jul 2, 2015
Service Brakes
I LOST THE BRAKES. THE PEDDLE WENT TO THE FLOOR. IT TURNED OUT TO BE A RUSTED OUT BRAKE LINE. I WAS ABLE TO AVOID AN ACCIDENT BY PULLING OFF THE ROAD. AFTER RESEARCH, I FOUND THIS IS A RECURRING PROBLEM FOR CHEVY SUBURBANS.
NHTSA ODI #10731735
120,096 miles · Jul 1, 2015
Service BrakesCrash
WHILE ATTEMPTING TO STOP THE 2002 CHEVROLET SILVERADO 1500, THE ANTI-LOCK BRAKES ACTIVATED AT ABOUT 5 MPH AND CAUSED TOTAL LOSS OF BRAKING CONTROL. UNABLE TO STOP, THE SILVERADO CRASHED DIRECTLY INTO AN ADVERTISING SIGN. THERE WAS MINIMAL DAMAGE TO THE SILVERADO, MODERATE DAMAGE TO THE ADVERTISING SIGN, AND NO INJURIES TO THE …
Read full complaint
WHILE ATTEMPTING TO STOP THE 2002 CHEVROLET SILVERADO 1500, THE ANTI-LOCK BRAKES ACTIVATED AT ABOUT 5 MPH AND CAUSED TOTAL LOSS OF BRAKING CONTROL. UNABLE TO STOP, THE SILVERADO CRASHED DIRECTLY INTO AN ADVERTISING SIGN. THERE WAS MINIMAL DAMAGE TO THE SILVERADO, MODERATE DAMAGE TO THE ADVERTISING SIGN, AND NO INJURIES TO THE DRIVER OR TWO CHILDREN. FOLLOW-UP AFTER THE ACCIDENT REVEALED THAT ACTIVATION OF THE ANTI-LOCK BRAKING SYSTEM (ABS) IS A KNOWN ISSUE AND PART OF A GM RECALL (NHTSA CAMPAIGN NUMBER: 05V379000).
NHTSA ODI #10731550
160,000 miles · Jul 1, 2015
Equipment Adaptive/mobilityService Brakes
MY BRAKE LINES FAILED, NEARLY RESULTING IN KILLING A CHILD THAT RODE HIS BIKE ONTO THE ROAD FROM A DRIVEWAY AND FORCING A VEHICLE HEADON INTO MY LANE OF TRAVEL. LUCKLY EVERYONE WAS ABLE TO SQUEEZE INTO APPROPRIATE PLACES AND WAS PAYING ATTENTION AS I WAS UNABLE TO SLOWDOWN. DUST COVERS ON THE REAR HAVE BEEN RUSTED AND GONE FOR…
Read full complaint
MY BRAKE LINES FAILED, NEARLY RESULTING IN KILLING A CHILD THAT RODE HIS BIKE ONTO THE ROAD FROM A DRIVEWAY AND FORCING A VEHICLE HEADON INTO MY LANE OF TRAVEL. LUCKLY EVERYONE WAS ABLE TO SQUEEZE INTO APPROPRIATE PLACES AND WAS PAYING ATTENTION AS I WAS UNABLE TO SLOWDOWN. DUST COVERS ON THE REAR HAVE BEEN RUSTED AND GONE FOR THE LAST TWO YEARS, AND I HAVE REPLACED THE REGULATORS IN BOTH PASSENGER/DRIVERSIDE DOORS THREE TIME EACH DUE TO THE CABLES RUSTING AND SNAPPING. WHEN I TOOK MY VEHICLE INTO CHEVROLET DEALER SHIP FOR MAINTENANCE, IT HAD LESS THAN 36K AT THE TIME, THEY REMOVED ONE PLASTIC PANEL (FALLING DOWN FROM BEHIND THE DOOR INTERIOR TRIM PANELS) FROM EACH DOOR THAT WAS HANGING DOWN AND SCRATCHING MY ROCKER PANEL, AND SAID "WE DONT KNOW WHAT THESE ARE FOR, SO WE JUST REMOVED THEM", HMMM, MAYBE IT WAS TO HELP WITH MOITURE RELATED ISSUES WITHIN THE DOOR PANEL. NOT SURE JUST GUESSING, BUT CANT BELLIVE THAT THEY COULDN'T FIGURE IT OUT. OVER ALL NOT IMPRESSED WITH CHEVROLET EVEN THOUGH IT IS PRETTY MUCH ALL I HAVE OWNED, IF THEY KEEP PRODUCING THIS CRAP THEY SHOULD LOWER THE PRICE.
NHTSA ODI #10731403
66,181 miles · Jun 25, 2015
Service Brakes
WENT TO START TRUCK. PRESSED BRAKE PEDAL. TRUCK STARTED, PEDAL WENT TO FLOOR. TOOK FOOT OFF PEDAL. LET TRUCK RUN FOR A FEW MINUTES TO SEE IF BRAKE LIGHT WOULD GO OFF. IT DID NOT. TURNED OFF TRUCK. CHECKED AROUND TRUCK. FOUND BRAKE FLUID UNDER TRUCK BY RIGHT REAR TIRE. CHECK BRAKE LINE NEAR LEFT REAR TIRE. IT IS IN BAD SHAPE AND …
Read full complaint
WENT TO START TRUCK. PRESSED BRAKE PEDAL. TRUCK STARTED, PEDAL WENT TO FLOOR. TOOK FOOT OFF PEDAL. LET TRUCK RUN FOR A FEW MINUTES TO SEE IF BRAKE LIGHT WOULD GO OFF. IT DID NOT. TURNED OFF TRUCK. CHECKED AROUND TRUCK. FOUND BRAKE FLUID UNDER TRUCK BY RIGHT REAR TIRE. CHECK BRAKE LINE NEAR LEFT REAR TIRE. IT IS IN BAD SHAPE AND WILL LIKELY FAIL SOON. TWO OR THREE YEARS AGO, HAD FRONT LINE FAIL BELOW DRIVER'S SEAT. REPLACED FRONT LINES. REAR LINES DID NOT LOOK TOO BAD AT THE TIME. WITH ALL NEW TECHNOLOGY ADVANCES, CHEVY IS NOW USING INFERIOR MATERIAL. DUST GUARDS AROUND REAR BRAKES OF THIS TRUCK ARE COMPLETELY GONE ON BOTH SIDES. EVERYTHING IS RUSTING. HAD 1975 BUICK ESTATE WAGON FOR 22 YRS. IT WAS IN BETTER SHAPE WHEN I SOLD IT THAN THIS TRUCK HAS BEEN FOR THE LAST SEVERAL YEARS. CHEVY COULD DO ALL THE CORPORATE DOUBLE SPEAK THEY WANT. FACT IS THIS RUST ISSUE IS A SAFETY ISSUE. I HAVE FRIENDS THAT HAVE A LITTLE OLDER AND NEWER 1500 AND ALL HAVE BRAKE LINE ISSUES AND VARYING DEGREES OF RUST UNDERNEATH THE VEHICLE. I SEE WHERE OTHERS HAVE REGISTERED SIMILAR COMPLAINTS. IT IS UNFORTUNATE THAT NOTHING WILL GET DONE UNTIL THERE ARE SERIOUS INJURIES. (I SEE WHERE YOU WANT A DAYTIME PHONE NUMBER. IF YOU CALL FROM A PHONE THAT DOES NOT HAVE A NHTSA ID, YOU WILL HAVE TO LEAVE A VOICEMAIL.) UPDATED 09/17/15*LJ UPDATED 10/27/2017*CN
NHTSA ODI #10730395
40,800 miles · Jun 15, 2015
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING AT 5 MPH, THE ANTILOCK BRAKE SYSTEM WOULD ACTIVATE INDEPENDENTLY. THE FAILURE OCCURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE WHEEL SPEED SENSOR MOUNTING SURFACE NEEDED TO BE CLEANED AND REINSTALLED. THE VEHICL…
Read full complaint
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING AT 5 MPH, THE ANTILOCK BRAKE SYSTEM WOULD ACTIVATE INDEPENDENTLY. THE FAILURE OCCURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE WHEEL SPEED SENSOR MOUNTING SURFACE NEEDED TO BE CLEANED AND REINSTALLED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 40,800.
NHTSA ODI #10725363
85,595 miles · May 27, 2015
Fuel/propulsion SystemService BrakesWheels
I'VE HAD TO REPLACE CALIPERS, ROTORS, BRAKE LINES THE HAVE RUSTED, BRAKES HOSES THAT HAVE GONE BAD AND THIS VEHICLE IS WELL KEPT AND INSIDE. LOW MILES FOR A 2002 AND YET ALL AT ONCE EVERYTHING WENT BAD INCLUDING MY FUEL SENSOR FOR THE GAS GUAGE.
NHTSA ODI #10721767
153,000 miles · May 26, 2015
Service Brakes
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE BRAKES FAILED WHILE DRIVING 50 MPH. THE DEALER STATED THAT THE BRAKE LINES WERE CORRODED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 153,000.
NHTSA ODI #10721514
237,000 miles · Apr 20, 2015
Service Brakes
WITHOUT ANY WARNING AND FORTUNATELY AT LOW SPEED THE DRIVER'S SIDE REAR BRAKE LINE DEVELOPED A MAJOR LEAK. DESPITE GM'S CLAIM THAT AN INCIDENT SUCH AS THIS DOES NOT RESULT IN INADEQUATE BRAKING, IT WAS DIFFICULT TO STOP THE TRUCK. FURTHER INSPECTION OF THE BRAKE LINES YIELDED CONSIDERABLE CORROSION IN OTHER AREAS. CONTACTIN…
Read full complaint
WITHOUT ANY WARNING AND FORTUNATELY AT LOW SPEED THE DRIVER'S SIDE REAR BRAKE LINE DEVELOPED A MAJOR LEAK. DESPITE GM'S CLAIM THAT AN INCIDENT SUCH AS THIS DOES NOT RESULT IN INADEQUATE BRAKING, IT WAS DIFFICULT TO STOP THE TRUCK. FURTHER INSPECTION OF THE BRAKE LINES YIELDED CONSIDERABLE CORROSION IN OTHER AREAS. CONTACTING THE DEALER WHERE I PURCHASED THE TRUCK REVEALED THE HIGH COST TO REPAIR THIS ISSUE, DESPITE THE FACT THAT IT IS A MAJOR SAFETY ISSUE WITH THE TRUCK. THE DEALER ALSO MADE NOTE THAT I SHOULD CONSIDER REPLACING THE FUEL LINES. CONTACTING GENERAL MOTORS YIELDED THE RESPONSE THAT THIS IS A MAINTENANCE ISSUE AND THAT THEY COULD DO NOTHING TO ASSIST ME. I DO CONSIDER OTHER COMPONENTS IN THE BRAKING SYSTEM TO BE MAINTENANCE ITEMS, NOT THE BRAKE LINES. BRAKE LINE FAILURE CAN RESULT IN IMMEDIATE CATASTROPHIC RESULTS WITH ABSOLUTELY NO WARNING. MY EXHAUST SYSTEM IS THE SAME AGE AS MY BRAKE LINES AND IS IN EXCELLENT CONDITION DESPITE THE SAME ENVIRONMENTAL EXPOSURE AS MY BRAKE LINES. GENERAL MOTORS NEEDS TO ADDRESS THIS SERIOUS SAFETY ISSUE. *TR
NHTSA ODI #10711830
270,000 miles · Apr 19, 2015
Service Brakes
RUSTY BRAKE LINE BROKE. LOST BRAKE CONTROL FOR ENTIRE VEHICLE. *TR
NHTSA ODI #10706510
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.
Illustration