NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
158 reports94,320 miles · Sep 29, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, HE APPLIED THE BRAKES AND THE PEDAL DEPRESSED TO THE FLOOR. THE BRAKE LIGHT ALSO ILLUMINATED ON THE INSTRUMENT PANEL AFTER THE FAILURE. THE VEHICLE WAS SAFELY MANEUVERED TO THE SHOULDER, WHERE THE CONTACT NOTICED THAT ALL OF THE BRAKE LINE…
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TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, HE APPLIED THE BRAKES AND THE PEDAL DEPRESSED TO THE FLOOR. THE BRAKE LIGHT ALSO ILLUMINATED ON THE INSTRUMENT PANEL AFTER THE FAILURE. THE VEHICLE WAS SAFELY MANEUVERED TO THE SHOULDER, WHERE THE CONTACT NOTICED THAT ALL OF THE BRAKE LINES WERE CORRODED AND BRAKE FLUID WAS LEAKING. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGES WERE 94,320.
NHTSA ODI #10427944
150,000 miles · Sep 27, 2011
Structure
TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THE VEHICLE WAS PARKED WHEN HE NOTICED THE TAILGATE WAS PARTIALLY DETACHED FROM THE HINGE. ONE OF THE CABLES THAT HELD THE LIFT GATE UP WAS ALSO FRACTURED. THE VEHICLE WAS NOT TAKEN TO THE DEALER NOR WAS THE FAILURE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE A…
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TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THE VEHICLE WAS PARKED WHEN HE NOTICED THE TAILGATE WAS PARTIALLY DETACHED FROM THE HINGE. ONE OF THE CABLES THAT HELD THE LIFT GATE UP WAS ALSO FRACTURED. THE VEHICLE WAS NOT TAKEN TO THE DEALER NOR WAS THE FAILURE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THE VEHICLE WAS NOT INCLUDED IN THE NHTSA RECALL CAMPAIGN ID NUMBER 06V066000, STRUCTURE BODY, TAILGATE:HINGE AND ATTACHMENTS. THE FAILURE MILEAGE WAS 150,000.
NHTSA ODI #10427555
Mileage unknown · Sep 25, 2011
Engine And Engine Cooling
MY GMC SIERRA HAS THE 5.3 V8 ENGINE AND THREE OF THE EXHAUST MANIFOLD BOLTS ARE BROKEN OFF AND IT IS LEAKING EXHAUST FUMES .THESE BOLTS SHOULD NOT BREAK OFF SO EASILY.I FEEL THIS IS A SAFETY ISSUE AND A RECALL SHOULD BE ISSUED TO REPAIR THIS PROBLEM. I KNOW OTHER OWNERS WHO HAVE THE SAME PROBLEM. *TR
NHTSA ODI #10427085
129,994 miles · Sep 13, 2011
Service Brakes, Hydraulic
RETURNING HOME TURNED ONTO PROGRESS DR. XENIA, OH. HAD TO MAKE A RAPID STOP (CAR PULLED OUT IN FRONT OF ME), BRAKES FELT SOFTER, PULLED INTO SIOUX DR. XENIA, OH. TO PICK UP WIFE AND HEAD A FAMILY MEMBERS HOUSE. DROVE UP SIOUX DR. STOPPED AT THE STOP AND TURNED ONTO MAUMEE DR., WENT TO PUSH ON BRAKE PEDAL IT WENT TO THE FLOOR, D…
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RETURNING HOME TURNED ONTO PROGRESS DR. XENIA, OH. HAD TO MAKE A RAPID STOP (CAR PULLED OUT IN FRONT OF ME), BRAKES FELT SOFTER, PULLED INTO SIOUX DR. XENIA, OH. TO PICK UP WIFE AND HEAD A FAMILY MEMBERS HOUSE. DROVE UP SIOUX DR. STOPPED AT THE STOP AND TURNED ONTO MAUMEE DR., WENT TO PUSH ON BRAKE PEDAL IT WENT TO THE FLOOR, DROVE BACK HOME AND FOUND BRAKE FLUID DRIPPING ON THE DRIVEWAY. FOUND THAT BRAKE LINE NEXT TO FRAME OF TRUCK WAS LEAKING. LATER FOUND BRAKE FLUID ON FRONT DRIVEWAY WHERE I HAD STOP EARLIER. *TR
NHTSA ODI #10425189
65,000 miles · Aug 25, 2011
Engine And Engine Cooling
FOUND THE EXHAUST MANIFOLD BOLTS ON BOTH SIDES OF THE ENGINE SNAPPING OFF FOR NO REASON AT ABOUT 65K MILES. WHEN I ASKED THE LOCAL DEALER ABOUT THIS THEY STATED THEY WOULD NEED TO REMOVE AND RESET THE ENGINE HEADS IN ORDER TO REMOVE THE BROKEN BOLTS. I DID NOT HAVE THEM REPAIR THE PROBLEM DUE TO THE COST THEY QUOTED. I NOW HAVE …
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FOUND THE EXHAUST MANIFOLD BOLTS ON BOTH SIDES OF THE ENGINE SNAPPING OFF FOR NO REASON AT ABOUT 65K MILES. WHEN I ASKED THE LOCAL DEALER ABOUT THIS THEY STATED THEY WOULD NEED TO REMOVE AND RESET THE ENGINE HEADS IN ORDER TO REMOVE THE BROKEN BOLTS. I DID NOT HAVE THEM REPAIR THE PROBLEM DUE TO THE COST THEY QUOTED. I NOW HAVE THREE BOLTS ON EACH SIDE WHICH HOLD THE MANIFOLDS IN PLACE. THE PROBLEM SEAM TO HAPPEN AT THE CHANGE OF THE SEASON FROM FALL TO WINTER. IN THE EXTREME COLD WEATHER, ON A COLD START UP, THERE IS AN OBVIOUS EXHAUST LEAK. AS THE ENGINE HEATS UP THE LEAK DOES DISAPPEAR. THIS IS A SAFETY HAZARD DUE TO THE FACT IF THE ENGINE EXHAUST BLOW BY IS TRANSFERRED INTO THE CAB THE DRIVER COULD BECOME UNCONSCIOUS AND DEATH COULD OCCUR. *TR
NHTSA ODI #10421516
70,000 miles · Jul 21, 2011
Service Brakes, HydraulicCrash
1999 GMC SIERRA, TWO CARS INFRONT TURNING LEFT, WENT TO APPLY BRAKES AND PEDAL WENT TO FLOOR, NO BRAKES. ENDED UP CRASHING INTO THE CAR IN FRONT OF ME, WHICH IN TURN HIT THE CAR TURNING. AS I WAS MAKING SURE NO ONE WAS HURT, I NOTICED THAT MY TRUCK WAS LEAKING BRAKE FLUID ALL OVER THE ROAD. *KB
NHTSA ODI #10414035
68,000 miles · Jul 15, 2011
Parking Brake
TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 10 MPH, THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD ABNORMALLY. THE CONTACT INSPECTED THE VEHICLE AND NOTICED THAT THE BRAKE LINES WERE LEAKING. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND ADVISED THAT THERE WERE NO RECALLS FOR THE FAILURE. THE…
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TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 10 MPH, THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD ABNORMALLY. THE CONTACT INSPECTED THE VEHICLE AND NOTICED THAT THE BRAKE LINES WERE LEAKING. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND ADVISED THAT THERE WERE NO RECALLS FOR THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 68,000.
NHTSA ODI #10412413
130,000 miles · Jun 15, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED WHEN DRIVING AT LOW SPEEDS AND DECELERATING HE NOTICED THE ANTI-LOCK BRAKING SYSTEM WOULD ENGAGE AND IT ALSO MADE A LOUD GRINDING NOISE. THE VEHICLE WAS NOT BEEN INSPECTED BY A DEALER NOR HAD IT BEEN REPAIRED. THE MANUFACTURER WAS CONTACTED AND ADVISED HIM THAT HE WA…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED WHEN DRIVING AT LOW SPEEDS AND DECELERATING HE NOTICED THE ANTI-LOCK BRAKING SYSTEM WOULD ENGAGE AND IT ALSO MADE A LOUD GRINDING NOISE. THE VEHICLE WAS NOT BEEN INSPECTED BY A DEALER NOR HAD IT BEEN REPAIRED. THE MANUFACTURER WAS CONTACTED AND ADVISED HIM THAT HE WAS NOT INCLUDED IN NHTSA RECALL CAMPAIGN ID NUMBER 05V379000(SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE FAILURE MILEAGE WAS APPROXIMATELY 130,000.
NHTSA ODI #10406944
81,000 miles · May 15, 2011
Service Brakes, Hydraulic
WHILE DRIVING HIGHWAY SPEED (70 MPH) MY GRANDSON PRESSED ON THE BRAKE TO SLOW DOWN AT AN EXIT AND LOST ALL BUT 1/2 IN OF BRAKE PEDAL. NO ACCIDENT BUT BARELY STOPPED BEFORE AN ACCIDENT OCCURRED. AND HE IS ONLY 17 YRS OLD AND WAS BADLY SCARED.. REPAIR SHOP CHANGED THE REAR BRAKE LINE FROM THE ABS MODULE TO THE REAR BRAKE CONNECTI…
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WHILE DRIVING HIGHWAY SPEED (70 MPH) MY GRANDSON PRESSED ON THE BRAKE TO SLOW DOWN AT AN EXIT AND LOST ALL BUT 1/2 IN OF BRAKE PEDAL. NO ACCIDENT BUT BARELY STOPPED BEFORE AN ACCIDENT OCCURRED. AND HE IS ONLY 17 YRS OLD AND WAS BADLY SCARED.. REPAIR SHOP CHANGED THE REAR BRAKE LINE FROM THE ABS MODULE TO THE REAR BRAKE CONNECTION DUE TO BEING RUSTED THROUGH. COST WAS $451.00. IT WAS ALSO NOTED THAT THE OTHER 5 BRAKE LINES AT THE ABS MODULE WERE BADLY RUSTED AND NEEDED REPLACEMENT. *TR
NHTSA ODI #10400906
48,703 miles · Apr 1, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 1999 GMC SIERRA C1500. WHILE DRIVING APPROXIMATELY 5 MPH, THE CONTACT APPLIED PRESSURE TO THE BRAKES AND THE VEHICLE CONTINUED TO ACCELERATE. SHE INSPECTED THE VEHICLE AND NOTICED THAT THE BRAKE LINES WERE COVERED WITH RUST, CORRODED AND THAT THERE WAS BRAKE FLUID LEAKING. THE DEALER HAD NOT BEEN NOTIFIE…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA C1500. WHILE DRIVING APPROXIMATELY 5 MPH, THE CONTACT APPLIED PRESSURE TO THE BRAKES AND THE VEHICLE CONTINUED TO ACCELERATE. SHE INSPECTED THE VEHICLE AND NOTICED THAT THE BRAKE LINES WERE COVERED WITH RUST, CORRODED AND THAT THERE WAS BRAKE FLUID LEAKING. THE DEALER HAD NOT BEEN NOTIFIED; HOWEVER, THE MANUFACTURER OFFERED NO ASSISTANCE DUE TO THE AGE OF THE VEHICLE. NO REPAIRS WERE PERFORMED. THE FAILURE MILEAGE WAS 48,703. UPDATED 05/04/11 *BF UPDATED 09/19/11
NHTSA ODI #10393934
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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