NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
158 reports115,000 miles · Apr 10, 2010
Equipment Adaptive/mobilityService Brakes, Hydraulic
BRAKE LINES FAILED ON MY 1999 GMS SIERRA PICK UP. HAD TO BE REPLACED AT A COST OF $2000.00 +'S. ALSO ANTI LOCK BRAKING HAS FAILED DUE TO FRONT SENSOR PROBLEM, GM WANTED TO REPLACE FRONT BEARINGS AND WHEEL HUBS TO FIX THIS FOR $1100.00 MORE,TOLD THEM THIS WAS A RECALL THEY DID IN THE PAST DID NOT WANT TO HEAR IT. HAD TO REMOVE FU…
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BRAKE LINES FAILED ON MY 1999 GMS SIERRA PICK UP. HAD TO BE REPLACED AT A COST OF $2000.00 +'S. ALSO ANTI LOCK BRAKING HAS FAILED DUE TO FRONT SENSOR PROBLEM, GM WANTED TO REPLACE FRONT BEARINGS AND WHEEL HUBS TO FIX THIS FOR $1100.00 MORE,TOLD THEM THIS WAS A RECALL THEY DID IN THE PAST DID NOT WANT TO HEAR IT. HAD TO REMOVE FUSE FOR ANTI LOCK BRAKING, VEHICLE RIDES AND BRAKES OK. *TR
NHTSA ODI #10324824
Mileage unknown · Mar 20, 2010
Service Brakes, Hydraulic
AFTER PUTTING IN NEW BRAKE PADS AND BRAKE ROTORS ON MY 1999 GMC SIERRA 1500 PICKUP TRUCK, I LOST PRESSURE TO THE BRAKE PEDAL. AFTER CHECKING FOR RECALLS AND HAVING MORE THEN ONE CERTIFIED MECHANIC TRY TO SOLVE THE ISSUE I WAS TOLD THE EHCU ( ELECTRO-HYDRAULIC CONTROL UNIT) WAS NOT WORKING. THE COMPANIES TOLD ME THAT IT WAS A COM…
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AFTER PUTTING IN NEW BRAKE PADS AND BRAKE ROTORS ON MY 1999 GMC SIERRA 1500 PICKUP TRUCK, I LOST PRESSURE TO THE BRAKE PEDAL. AFTER CHECKING FOR RECALLS AND HAVING MORE THEN ONE CERTIFIED MECHANIC TRY TO SOLVE THE ISSUE I WAS TOLD THE EHCU ( ELECTRO-HYDRAULIC CONTROL UNIT) WAS NOT WORKING. THE COMPANIES TOLD ME THAT IT WAS A COMMON ITEM TO GO BAD ON ALL TRUCKS 1999 AND NEWER. THERE ARE NO RECALLS ON THEM AND THEY ARE A DEALERSHIP ITEM. THE COST OF A NEW ONE IS $1,068.00. BEING THAT THIS ITEM IS A COMMON PROBLEM AND THE PRICE BEING SO EXPENSIVE WHEN THE VEHICLE IS 10 YRS OLD, I FEEL THE PRICE OF THE UNITS SHOULD BE EITHER RECALLED OR LOWER IN PRICE. *TR
NHTSA ODI #10321168
102,000 miles · Aug 14, 2009
Service Brakes, Hydraulic
BRAKE LINES ON A 99 GMC COMPLETELY RUSTED THROUGH CAUSING COMPLETE LOSS OF BRAKING ABILITY. *TR
NHTSA ODI #10280476
10,000 miles · Jul 31, 2009
Seats
1999 GMC SIERRA EXTENDED CAB PROBLEM: FOR THE SECOND TIME THE CHEAP PIECE OF PLASTIC LOCKING MECHANISM FOR THE DRIVERS SIDE SEAT FAILED, OR RATHER BROKE IN HALF AGAIN. NOT ONLY WILL I HAVE TO PAY FOR IT TO BE SERVICED AGAIN, THE STUPID, SICK PIECE OF ENGINEERING DESIGNED IS A HUGE SAFETY HAZARD. THIS IS WHY PEOPLE DON'T BUY AM…
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1999 GMC SIERRA EXTENDED CAB PROBLEM: FOR THE SECOND TIME THE CHEAP PIECE OF PLASTIC LOCKING MECHANISM FOR THE DRIVERS SIDE SEAT FAILED, OR RATHER BROKE IN HALF AGAIN. NOT ONLY WILL I HAVE TO PAY FOR IT TO BE SERVICED AGAIN, THE STUPID, SICK PIECE OF ENGINEERING DESIGNED IS A HUGE SAFETY HAZARD. THIS IS WHY PEOPLE DON'T BUY AMERICAN ANYMORE. IT MUST BE RECALLED OR PEOPLE WILL DIE. *TR
NHTSA ODI #10278951
78,858 miles · May 14, 2009
Service Brakes, Hydraulic
BRAKE FAILURE DUE TO RUSTED BRAKE LINE. A PANIC STOP WAS ATTEMPTED TO AVOID A MERGING VEHICLE. THE BRAKE PEDAL WENT TO THE FLOOR WHEN THE LINE BROKE. I WAS ABLE TO AVOID THE VEHICLE THE REMAINING FLUID AND SLOW SPEED STOPPED MY VEHICLE. I HAVE HAD OTHER PROBLEMS IN THE PAST WITH THE BRAKE PEDAL BEING SOFT AND ABLE TO GO TO THE…
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BRAKE FAILURE DUE TO RUSTED BRAKE LINE. A PANIC STOP WAS ATTEMPTED TO AVOID A MERGING VEHICLE. THE BRAKE PEDAL WENT TO THE FLOOR WHEN THE LINE BROKE. I WAS ABLE TO AVOID THE VEHICLE THE REMAINING FLUID AND SLOW SPEED STOPPED MY VEHICLE. I HAVE HAD OTHER PROBLEMS IN THE PAST WITH THE BRAKE PEDAL BEING SOFT AND ABLE TO GO TO THE FLOOR. BUT IT REBOUNDED AND STOPPED THE TRUCK. THERE IS ALSO ABS QUIRKS AS WELL. VEHICLE IS A 1999 GMC SIERRA EXTENDED CAB 3 DOOR 4X4 5.3L 78,000 MILES. I FOUND THE LEAK IT WAS INSIDE THE FRAME UNDER THE DRIVERS DOOR IN A CLUSTER OF BRAKE LINES ATTACHING TO THE ABS PUMP. ALL OF THE BRAKE LINES IN THE AREA WERE SERIOUSLY RUSTED AND HAVE TO BE REPLACED. THE LINES APROX. 1 FOOT FROM THE ABS PUMP ARE IN GOOD SHAPE. THE BRAKE LINES SEEM TO BE RUSTED HOWEVER THE FRAME, UNDERBODY FLOOR AND OTHER EQUIPMENT LOCATED IN THE SAME AREA ARE NOT SHOWING A RUST PROBLEM. THIS RUST PROBLEM SHOULD BE CHECKED AND INSPECTED REGULARLY. I THINK A STAINLESS STEEL OR OTHER RUST RESISTANT MATERIAL SHOULD USED IN THIS LOCATION. *TR
NHTSA ODI #10268722
171,000 miles · Apr 15, 2009
Tires
I NOTICED THE SIDEWALL SEPARATING WHILE MY TRUCK WAS IN THE DRIVEWAY. I HAVEN'T DRIVEN THE VEHICLE SINCE. *TR
NHTSA ODI #10265527
110,000 miles · Mar 22, 2009
Electrical System
MALFUNCTION IN DIGITAL TRIP ODOMETER IN INSTRUMENT PANEL; ODOMETER DISPLAY WILL NOT APPEAR. BEGAN AS INTERMITTENT PROBLEM, NOW WILL NOT FUNCTION AT ALL. *TR
NHTSA ODI #10262724
116,000 miles · Mar 19, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 5 MPH ON A GRAVEL ROAD SURFACE, THERE WAS NO RESPONSE WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL. IT TOOK EXCESSIVE FORCE JUST TO STOP THE VEHICLE. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE STOPPING DISTANCE INCREASED. THERE WERE NO WARNING INDI…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 5 MPH ON A GRAVEL ROAD SURFACE, THERE WAS NO RESPONSE WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL. IT TOOK EXCESSIVE FORCE JUST TO STOP THE VEHICLE. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE STOPPING DISTANCE INCREASED. THERE WERE NO WARNING INDICATORS ILLUMINATED ON THE INSTRUMENT PANEL. THE FAILURE OCCURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING AND THE TECHNICIAN STATED THAT THE FRONT WHEEL SPEED SENSOR WAS CORRODED AND CAUSED THE FAILURE. THE VEHICLE IS IN THE PROCESS OF BEING REPAIRED. THE VIN WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE 116,000.
NHTSA ODI #10262463
Mileage unknown · Nov 25, 2008
Service Brakes, HydraulicCrash
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE ATTEMPTING TO STOP THE VEHICLE AT A LOW RATE OF SPEED, THE ABS ENGAGED AND THE VEHICLE COULD NOT BE STOPPED UNTIL THE BRAKES WERE DISENGAGED, ENGAGED, AND PUMPED. ON SEPTEMBER 4, 2003, AT 46,663 MILES, THE FAILURE OCCURRED, BUT ONLY ONE SENSOR WAS REPLACED AT THAT TIME. ON SEP…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE ATTEMPTING TO STOP THE VEHICLE AT A LOW RATE OF SPEED, THE ABS ENGAGED AND THE VEHICLE COULD NOT BE STOPPED UNTIL THE BRAKES WERE DISENGAGED, ENGAGED, AND PUMPED. ON SEPTEMBER 4, 2003, AT 46,663 MILES, THE FAILURE OCCURRED, BUT ONLY ONE SENSOR WAS REPLACED AT THAT TIME. ON SEPTEMBER 20, 2004, AT 54,318 MILES, THE FAILURE RECURRED AND A SECOND SENSOR WAS REPLACED. A RECALL WAS ISSUED AND THE VEHICLE WAS REPAIRED ACCORDINGLY ON FEBRUARY 21, 2006, IN WHICH BOTH SENSORS WERE REPLACED AT 58,869 MILES. ON MARCH 3, 2006, THE CONTACT RETRIEVED THE VEHICLE, BUT IT HAD BEEN CRASHED INTO THE WALL. THE MECHANIC REPLACED THE FRONT PASSENGER SIDE HUB, WHICH WAS CLAIMED TO HAVE CAUSED THE CRASH. THE FRONT END OF THE VEHICLE WAS POORLY REPAIRED. IN MARCH OF 2008, THE ABS FAILURE RECURRED AND THE CONTACT TOOK THE VEHICLE TO BE REPAIRED AGAIN, BUT WAS INFORMED THAT IT WAS NO LONGER UNDER WARRANTY. THE CONTACT DISCONNECTED THE ABS. THE CURRENT MILEAGE WAS 95,500 AND THE FAILURE MILEAGE WAS UNKNOWN.
NHTSA ODI #10250309
95,000 miles · Oct 15, 2008
Steering
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING AT AN UNKNOWN SPEED, THE CONTACT WAS UNABLE TO MAKE A RIGHT TURN. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY STATED THAT THE STEERING GEAR BOX NEEDED TO BE REPLACED. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE VEHICLE WAS BECOMING MORE DIFFICULT TO STEER. THE…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING AT AN UNKNOWN SPEED, THE CONTACT WAS UNABLE TO MAKE A RIGHT TURN. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY STATED THAT THE STEERING GEAR BOX NEEDED TO BE REPLACED. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE VEHICLE WAS BECOMING MORE DIFFICULT TO STEER. THE CURRENT MILEAGE WAS 103,000 AND FAILURE MILEAGE WAS 95,000.
NHTSA ODI #10245607
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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