NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
166 reportsMileage unknown · Mar 8, 2008
Parking Brake
NOTICED THAT PARKING BRAKE DOESN'T WORK ANYMORE. (LOOKED ON LINE AND NOTICED THAT THERE WAS A RECALL FOR MANUAL TRANSMISSION BUT NOT FOR AUTOMATIC. ALSO NOTICED A LOT OF PEOPLE HAVE THE SAME PROBLEM. I BELIEVE IT IS A SAFETY ISSUE EVEN WITH AN AUTOMATIC SINCE PEOPLE PULL TRAILERS AND PARK ON INCLINES SETTING THE PARKING BRAKE…
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NOTICED THAT PARKING BRAKE DOESN'T WORK ANYMORE. (LOOKED ON LINE AND NOTICED THAT THERE WAS A RECALL FOR MANUAL TRANSMISSION BUT NOT FOR AUTOMATIC. ALSO NOTICED A LOT OF PEOPLE HAVE THE SAME PROBLEM. I BELIEVE IT IS A SAFETY ISSUE EVEN WITH AN AUTOMATIC SINCE PEOPLE PULL TRAILERS AND PARK ON INCLINES SETTING THE PARKING BRAKE. *TR
NHTSA ODI #10220467
63,293 miles · Jan 24, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. IN OCTOBER OF 2005, THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). HE IMMEDIATELY SCHEDULED AN APPOINTMENT TO HAVE THE VEHICLE REPAIRED. ONE YEAR LATER, WHILE ATTEMPTING TO APPLY PRESSURE TO THE BRAKES AT 5 MPH, HE F…
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TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. IN OCTOBER OF 2005, THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). HE IMMEDIATELY SCHEDULED AN APPOINTMENT TO HAVE THE VEHICLE REPAIRED. ONE YEAR LATER, WHILE ATTEMPTING TO APPLY PRESSURE TO THE BRAKES AT 5 MPH, HE FELT A SEVERE PULSATION IN THE BRAKE PEDAL. THE DEALER STATED THAT BOTH WHEEL SPEED SENSORS FAILED AND HAD TO BE REPLACED AT HIS OWN EXPENSE. THE CONTACT FILED A FORMAL COMPLAINT WITH THE MANUFACTURER. THE FAILURE AND CURRENT MILEAGES WERE 63,293.
NHTSA ODI #10215921
36,769 miles · Jan 22, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE APPLYING PRESSURE TO THE BRAKES, THE ABS ACTIVATED AUTOMATICALLY AND THE VEHICLE JERKED BACKWARDS. HE TOOK THE VEHICLE TO THE DEALER AND THEY REPAIRED IT ACCORDING TO NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). IMMEDIATELY AFTER THE REPAIR, THE FAI…
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TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE APPLYING PRESSURE TO THE BRAKES, THE ABS ACTIVATED AUTOMATICALLY AND THE VEHICLE JERKED BACKWARDS. HE TOOK THE VEHICLE TO THE DEALER AND THEY REPAIRED IT ACCORDING TO NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). IMMEDIATELY AFTER THE REPAIR, THE FAILURE RECURRED AND THE VEHICLE WAS TAKEN BACK TO THE DEALER. THEY INSPECTED THE VEHICLE AND STATED THAT THE PASSENGER SIDE FRONT SPEED SENSOR WAS CAUSING THE FAILURE. THE SPEED SENSOR WAS REPLACED. THE FAILURE MILEAGE WAS 36,769 AND CURRENT MILEAGE WAS 41,775.
NHTSA ODI #10215628
45,000 miles · Jan 9, 2008
Service Brakes, Hydraulic
ANTILOCK BRAKES ON 2002 GMC SIERRA TRUCK ACTIVATE FOR NO REASON AT SPEEDS OF 5MPH OR LESS MAKING THE VEHICLE UNSAFE TO DRIVE. THERE WAS A RECALL ON THE SENSORS FOR THIS REASON. I HAD MY SENSORS "TAKEN CARE OF" AND AFTERWARDS STARTED EXPERIENCING THIS EXACT PROBLEM. I WAS TOLD THAT THE HUBS ARE BAD AND THIS IS WHY THE ANTI LOC…
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ANTILOCK BRAKES ON 2002 GMC SIERRA TRUCK ACTIVATE FOR NO REASON AT SPEEDS OF 5MPH OR LESS MAKING THE VEHICLE UNSAFE TO DRIVE. THERE WAS A RECALL ON THE SENSORS FOR THIS REASON. I HAD MY SENSORS "TAKEN CARE OF" AND AFTERWARDS STARTED EXPERIENCING THIS EXACT PROBLEM. I WAS TOLD THAT THE HUBS ARE BAD AND THIS IS WHY THE ANTI LOCKS ARE COMING ON. THE SENSORS CAN NOT READ THE HUB "CORRECTLY". THE HUBS, WHICH ARE NOT A WEAR ITEM, CAN BE REPLACED FOR $1000. THIS IS ON A 2002 PICK UP TRUCK WITH 46,000 MILES ON IT AND IS GARAGE KEPT. THE HUBS ARE A NON WEAR ITEM. POOR ENGINEERING IS THE CULPRIT OF THIS PROBLEM. THE HUBS SHOULD BE REPLACED JUST LIKE THE SENSORS WERE. I WAS ALSO TOLD THAT ON MY GMC TRUCK I CANNOT HAVE THE ANTILOCK BRAKES DEACTIVATED. AS A RESULT, I HAVE TO SPEND THE $1000 TO MAKE MY TRUCK SAFE TO DRIVE. PROBABLY 40,000 MILES IN THE FUTURE I CAN REPLACE THE HUBS AGAIN FOR $1000. $1000 TO REPLACE A NON WEAR ITEM. ANTILOCK BRAKES ARE ON A VEHICLE TO MAKE THE VEHICLE SAFER. THE ANTILOCKS ON MY GMC MAKE THE VEHICLE UNDRIVABLE BECAUSE OF BEING UNSAFE. IT SHOULD BE POSSIBLE TO DEPEND ON YOUR BRAKES TO MAKE YOU STOP. WITH MY VEHICLE I CAN'T STOP. THIS IS NOT A WEAR ITEM THAT IS CAUSING MY PROBLEM. THIS IS POOR ENGINEERING! THIS SHOULD BE COVERED UNDER A RECALL, SAME AS THE SENSORS WERE COVERED UNDER A RECALL. GMC WILL COVER THE SENSORS BUT NOT WHAT THE SENSORS ARE LOOKING AT. *TR
NHTSA ODI #10214265
Mileage unknown · Dec 27, 2007
Service Brakes, Air
SPEED SENSORS IN THE FRONT WHEEL OF MY 2002 GMC 2WD TRUCK HAVE FAILED EVERY DECEMBER FOR THE LAST 4 YEARS THE FIRST TIME I PAID TO HAVE IT FIXED THE SECOND TIME IT WAS FIXED ON A RECALL THE THIRD AND FORTH TIME IT WAS FIXED BY MY EXTENDED WARRANTY COMPANY. I CALLED CUSTOMER SERVICE AT GMC AND TALKED TO A STEVIE SNAY ON TW…
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SPEED SENSORS IN THE FRONT WHEEL OF MY 2002 GMC 2WD TRUCK HAVE FAILED EVERY DECEMBER FOR THE LAST 4 YEARS THE FIRST TIME I PAID TO HAVE IT FIXED THE SECOND TIME IT WAS FIXED ON A RECALL THE THIRD AND FORTH TIME IT WAS FIXED BY MY EXTENDED WARRANTY COMPANY. I CALLED CUSTOMER SERVICE AT GMC AND TALKED TO A STEVIE SNAY ON TWO OCCASIONS. FIRST SHE TOLD ME SHE WOULD DO SOME CHECKING AND GET BACK TO ME. WHEN SHE CALLED ME BACK SHE TOLD ME THAT GM WOULD NOT COVER ANY OF MY EXPENSES. THEN SHE SUGGESTED THAT I PURCHASE A NEW WARRANTY. I FEEL THAT I HAVE BEEN MORE THAN PATIENT WITH THEM ON THIS MATTER AND FEEL THAT SINCE THIS IS A FACTORY DEFECT ON AN MVSS PART THAT THEY SHOULD COVER MY COSTS. *TR
NHTSA ODI #10212918
70,143 miles · Sep 24, 2007
Suspension
TRUCK BEGAN TO GRIND AND POP AS I WENT AROUND CORNERS. I HAD IT CHECKED OUT AND BOTH OF THE FRONT WHEEL BEARINGS WENT BAD WITHIN FIRST 70,000 MILES. GM WOULD NOT BACK THE VEHICLE. PARTS ALONE COST OVER $400 TO FIX THE VEHICLE. *JB
NHTSA ODI #10204016
87,000 miles · Aug 2, 2007
Service Brakes, HydraulicCrash
TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE MAKING A RIGHT TURN AT 5 MPH ON A DRY LIMESTONE, THE CONTACT HEARD A NOISE COMING FROM THE VEHICLE. THE NOISE SOUNDED AS IF THE ABS PUMP WAS ACTIVATED. WHEN HE DEPRESSED THE BRAKE PEDAL, THE BRAKES FAILED TO RESPOND. THE FAILURE CAUSED THE VEHICLE TO CRASH INTO A WORK TRAILER…
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TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE MAKING A RIGHT TURN AT 5 MPH ON A DRY LIMESTONE, THE CONTACT HEARD A NOISE COMING FROM THE VEHICLE. THE NOISE SOUNDED AS IF THE ABS PUMP WAS ACTIVATED. WHEN HE DEPRESSED THE BRAKE PEDAL, THE BRAKES FAILED TO RESPOND. THE FAILURE CAUSED THE VEHICLE TO CRASH INTO A WORK TRAILER. THE VEHICLE SUSTAINED FRONT END DAMAGE. THE VEHICLE WAS TOWED TO THE DEALER, BUT THEY COULD NOT FIND ANY FAILURES. THE MANUFACTURER SENT AN ENGINEER TO TAKE PICTURES OF THE VEHICLE AND TO RUN A DIAGNOSTIC REPORT. THE MANUFACTURER CALLED THE CONTACT AND STATED THAT THEY WERE UNABLE TO FIND ANY FAILURES AS WELL. THE CONTACT WAS ISSUED CASE NUMBER 71-534915559. THE CURRENT AND FAILURE MILEAGES WERE 87,000. THE CONSUMER STATED THAT AN REPRESENTATIVE CAME TO INVESTIGATE AND TOOK PICTURES THAT WERE IN TURN DOWNLOADED TO HIS LAPTOP. TWO WEEKS LATER THE CONSUMER WAS CONTACTED AND STATED THE CRASH WAS AT SUCH A LOW SPEED THE COMPUTER DID NOT RECORD ANYTHING AND GM COULD NOT ASSIST WITH THE REPAIRS. THE CONSUMER STATED TRADED VEHICLE IN DUE TO THE FACT COULD NOT GET ASSISTANCE FROM MANUFACTURER. THE CONSUMER PROVIDED PICTURES AND INFORMATION ON RECALLS PERTAINING TO THE DEFECT. UPDATED 08/27/07 *TR
NHTSA ODI #10198333
Mileage unknown · Jul 31, 2007
Parking Brake
COMPLETE EMERGENCY BRAKE FAILURE. THE E-BRAKE DOES NOT HOLD ON EVEN A SLIGHT INCLINE. FURTHER RESEARCH SHOWS THAT THIS IS A COMMON COMPLAINT BY GMC TRUCK OWNERS ON THE INTERNET. THERE WAS A RECALL FOR THE VEHICLES WITH MANUAL TRANSMISSIONS, BUT NOT VEHICLES WITH AUTOMATIC TRANSMISSIONS. THIS DOES NOT MAKE SENSE... *TR
NHTSA ODI #10198011
68,994 miles · Jul 20, 2007
EquipmentPower Train
AT 68,994 MILES MY TRUCK LOST 2ND GEAR, DRIVE, OVERDRIVE AND REVERSE. A NEW REACTION SHELL WAS INSTALLED. AT 90,027 MILES AND 360 DAYS LATER THE SAME PROBLEM OCCURRED AND A BEAST HEAVY DUTY REACTION SHELL WAS AVAILABLE AND INSTALLED. *JB
NHTSA ODI #10197084
10,000 miles · May 17, 2007
Parking Brake
PARKING BRAKE ON 2002 GMC FAILED REPEATEDLY. THE PARKING BRAKE PEDAL WENT TO THE FLOOR. FIRST TOLD THIS WAS NORMAL. SECOND COMPLAINT BRAKES WERE ADJUSTED. THIRD COMPLAINT CAUSE WAS FOUND. THE BRAKE FAILED TO COMPLETELY RELEASE. THE BRAKE WORE OUT PREMATURELY AND OVERHEATED. THE PROBLEM CONTINUED AFTER REPEATED ATTEMPTS TO R…
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PARKING BRAKE ON 2002 GMC FAILED REPEATEDLY. THE PARKING BRAKE PEDAL WENT TO THE FLOOR. FIRST TOLD THIS WAS NORMAL. SECOND COMPLAINT BRAKES WERE ADJUSTED. THIRD COMPLAINT CAUSE WAS FOUND. THE BRAKE FAILED TO COMPLETELY RELEASE. THE BRAKE WORE OUT PREMATURELY AND OVERHEATED. THE PROBLEM CONTINUED AFTER REPEATED ATTEMPTS TO REPAIR. THE REAR AXLES NEEDED REPLACEMENT DUE TO OVERHEATING/DAMAGE TO SEALS AND BEARINGS. USE OF FOUR WHEEL DRIVE WITH REAR BRAKES LOCKED TRANSFERRED TORQUE TO FRONT STEERING KNUCKLE WHICH REQUIRED REPLACEMENT. A WARPED REAR BRAKE BACKING PLATE HAS BEEN REPLACED DUE TO EXCESSIVE HEAT. THE VEHICLE HAS 70,000 MILES. THE PARKING BRAKES DID NOT WORK AGAIN AND NEED REPAIR WITH THE OUTCOME UNKNOWN.*AK
NHTSA ODI #10190989
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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