IllustrationMY REAR BUMPER ON MY CHEVY 1500 4X4 SILVERADO TRUCK IS ROTTING OFF THE TRUCK, YES ROTTING NEVER IN MY LIFE I SEEN POOR QUALITY IN PARTS GM IS USING, REAR BUMPERS ARE SUPPOSE TO PROTECT YOU FROM A CRASH THIS BUMPER IS ROTTING OFF MY TRUCK THIS IS A SAFETY HAZARD AND SHOULD BE RECALLED. *TR
2002 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2002 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 1500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
340–25K
4925–50K
7950–75K
10275–100K
124100–150K
55150K+
443 reports with mileage · 66 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes. Review the 184 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes, Hydraulic. Review the 164 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
45 crash reports5 fire reports15 injury reports
What owners actually said
509 reportsTL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE INSPECTING THE VEHICLE, HE NOTICED THE BRAKE LINES WERE CORRODED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 16,233. UPDATED 12/24/13*LJ
I WAS TRAVELING AT 30 TO 35 MILES PER HOUR AND A SCHOOL BUS STOPPED TO DROP KIDS RED LIGHTS FLASHING. I APPLIED BRAKE PRESSURE ONLY TO HAVE THE BRAKE PEDAL GO ALL THE WAY TO THE FLOOR BOARD. LUCKY TIMING I WAS FIRST IN LINE AND RAN INTO GRASS ON THE SIDE OF THE ROAD BEFORE ANY CHILDREN HAD DISEMBARKED. INVESTIGATION REVEALED THA…
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I WAS TRAVELING AT 30 TO 35 MILES PER HOUR AND A SCHOOL BUS STOPPED TO DROP KIDS RED LIGHTS FLASHING. I APPLIED BRAKE PRESSURE ONLY TO HAVE THE BRAKE PEDAL GO ALL THE WAY TO THE FLOOR BOARD. LUCKY TIMING I WAS FIRST IN LINE AND RAN INTO GRASS ON THE SIDE OF THE ROAD BEFORE ANY CHILDREN HAD DISEMBARKED. INVESTIGATION REVEALED THAT THE BRAKE LINES HAD CORRODED AND CAUSED A FLUID LEAK. *TR
TOTAL BRAKE FAILURE- RUPTURED BRAKE LINE UNDER DRIVER DOOR SIDE. FORTUNATELY THIS HAPPENED WHEN I WAS BACKING OUT OF MY DRIVEWAY AND I WAS ABLE TO STOP MY TRUCK USING THE EMERGENCY BRAKE.THE WEEK BEFORE I HAD MY ABS SENSORS ON THE FRONT WHEELS REPLACED BECAUSE THE TRUCK WOULD SOMETIMES NOT STOP AT A SLOW SPEED. I AM HAPPY THAT T…
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TOTAL BRAKE FAILURE- RUPTURED BRAKE LINE UNDER DRIVER DOOR SIDE. FORTUNATELY THIS HAPPENED WHEN I WAS BACKING OUT OF MY DRIVEWAY AND I WAS ABLE TO STOP MY TRUCK USING THE EMERGENCY BRAKE.THE WEEK BEFORE I HAD MY ABS SENSORS ON THE FRONT WHEELS REPLACED BECAUSE THE TRUCK WOULD SOMETIMES NOT STOP AT A SLOW SPEED. I AM HAPPY THAT THIS DID NOT HAPPEN WHILE I WAS TOWING MY TRAILER. RUPTURE OF THIS LINE CAUSED A TOTAL BRAKE FAILURE WITH NO WARNING UNTIL AFTER THE INCIDENT( WHEN ALL THE FLUID WAS GONE}. *TR
NOTICED BRAKE FLUID WAS LOW. COULD NOT FIND ANY LEAKS, WHILE BACKING TRUCK UP, I APPLIED MY BRAKES AND THE BRAKE PEDAL WENT CLEAR TO THE FLOOR. I USED MY EMERGENCY BRAKE TO STOP MY TRUCK. I IMMEDIATELY LOOKED UNDERNEATH THE TRUCK AND BRAKE FLUID WAS DRIPPING FROM THE REAR AXLE. I INVESTIGATED THE BRAKE LINES AND FOUND THEM TO BE…
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NOTICED BRAKE FLUID WAS LOW. COULD NOT FIND ANY LEAKS, WHILE BACKING TRUCK UP, I APPLIED MY BRAKES AND THE BRAKE PEDAL WENT CLEAR TO THE FLOOR. I USED MY EMERGENCY BRAKE TO STOP MY TRUCK. I IMMEDIATELY LOOKED UNDERNEATH THE TRUCK AND BRAKE FLUID WAS DRIPPING FROM THE REAR AXLE. I INVESTIGATED THE BRAKE LINES AND FOUND THEM TO BE COMPLETELY RUSTED AND CORRODED. I WAS JUST LUCKY THAT THIS DID NOT HAPPEN ON THE HIGHWAY AS IT WOULD HAVE BEEN A CERTAIN COLLISION CAUSING INJURIES OR DEATH. *TR
LEFT REAR STEEL BRAKE LINE BLEW OUT. UPON INSPECTION, BRAKE LINE WAS FOUND RUSTED WITH A 1/16 INCH HOLE ON THE 3/16 INCH TUBING. *TR
BRAKES FAILED AS I WAS COMING TO A STOP SIGN. NO CROSS TRAFFIC AT TIME SO NO COLLISION OCCURRED. HAD VEHICLE TOWED TO REPAIR FACILITY. ALL BRAKE LINES HAD TO BE REPLACED. TOTAL BILL $750. *TR
WHILE DRIVING IN NORMAL TRAFFIC, I WAS PREPARING TO STOP AT A RED LIGHT WITH VEHICLES AHEAD OF ME. UPON APPLYING BRAKES FROM APPROX 30 MPH, I WAS ABLE TO BRAKE LIKE NORMAL, UNTIL APPROX 5-10 MPH, WHEN THE ABS KICKED ON FOR NO REASON, SENDING MY TRUCK WITHIN INCHES FROM STRIKING ANOTHER MOTORIST IN FRONT OF ME. IT CONTINUED TO …
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WHILE DRIVING IN NORMAL TRAFFIC, I WAS PREPARING TO STOP AT A RED LIGHT WITH VEHICLES AHEAD OF ME. UPON APPLYING BRAKES FROM APPROX 30 MPH, I WAS ABLE TO BRAKE LIKE NORMAL, UNTIL APPROX 5-10 MPH, WHEN THE ABS KICKED ON FOR NO REASON, SENDING MY TRUCK WITHIN INCHES FROM STRIKING ANOTHER MOTORIST IN FRONT OF ME. IT CONTINUED TO DO THIS FOR ABOUT 3 MILES UNTIL I ARRIVED HOME.
MY WIFE COMPLAINED TO ME THE BRAKES ON OUR 2002 CHEVY SILVERADO PICK-UP, FELT FUNNY. I BACKED OUR PICK-UP TRUCK OUT OF THE DRIVEWAY AND WENT TO THE END OF THE STREET, THE BRAKES FELT MUSHY. AS I GOT TO THE END OF OUR STREET IS A STOP SIGN. I WAS GOING APPROXIMATELY 15 TO 20MPH. I WENT TO STOP THE TRUCK AND THE BRAKE PEDA…
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MY WIFE COMPLAINED TO ME THE BRAKES ON OUR 2002 CHEVY SILVERADO PICK-UP, FELT FUNNY. I BACKED OUR PICK-UP TRUCK OUT OF THE DRIVEWAY AND WENT TO THE END OF THE STREET, THE BRAKES FELT MUSHY. AS I GOT TO THE END OF OUR STREET IS A STOP SIGN. I WAS GOING APPROXIMATELY 15 TO 20MPH. I WENT TO STOP THE TRUCK AND THE BRAKE PEDAL WENT RIGHT TO THE FLOOR. I WAS UNABLE TO STOP. I PUMPED THE BRAKES AND THEN HELD FIRMLY ON THE PEDAL. I QUICKLY OBSERVED CROSS TRAFFIC IN THE ROAD BEFORE ME AND I TURNED SHARPLY ONTO THE SHOULDER OF THE HIGHWAY WEST JUST BEING NARROWLY MISSED BY WEST BOUND TRAFFIC. I HAD MY WIFE FOLLOW ME TO THE DEALERSHIP AND I COASTED INTO THE DEALERSHIP WITHOUT ANY BRAKES AT ALL. THE FOLLOWING DAY I WAS TOLD BY THE DEALERSHIP I NEEDED ALL NEW BRAKE LINES AND BRAKE CALIBERS. THEY ASKED ME TO COME DOWN AND VIEW THE UNDER PORTIONS OF OUR PICK-UP AND I DID SO. THE TRUCK WAS UP ON THE HOIST AND MECHANIC AND SERVICE REP SHOWED ME HE WAS UNABLE TO TAKE THE BROKEN LINE OUT OF THE BRAKE CALIBER WITHOUT SNAPPING OFF THE NUT HOLDING THE BRAKE LINE. THEY SHOWED ME THE REMAINING BRAKE LINES ALL IN STAGES OF RUSTING OUT INCLUDING THE ONE LINE THAT BLEW OPEN CAUSING THE SUDDEN LEAK AND "NO BRAKES" PROBLEM. THE REPAIR SERVICE COST ME APPROXIMATELY $2800,00. I COMPLAINED TO THE SERVICE MANAGER [XXX], I TOLD HIM I HAVE DRIVEN GM CARS FOR DECADES ON MICHIGAN ROADS AND NEVER HAD ANY BRAKE LINE RUST OUT AND FAIL. I WAS TOLD THE BRAKE LINE FAILURE WAS DUE TO THE SALTY CONDITIONS DRIVING IN MICHIGAN WINTERS. HIS EXPLANATION STILL DID NOT MAKE MUCH SENSE TO ME. I KNOW CAR MANUFACTURES ARE VERY AWARE OF THESE TYPE ROAD CONDITIONS IN THE MIDWEST AND NORTH EAST. THE DEALERSHIP THAT I TOOK MY TRUCK TO IS THE ONLY REPAIR FACILITY I HAVE TAKEN IT TO FOR MAINTENANCE AND REPAIRS. THAT WAS A VERY EXPENSIVE REPAIR BILL. WE WERE LUCKY NOT HAVING AN ACCIDENT ON THAT DAY. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
THIS COMPLAINT RELATES TO NHTSA ACTION NUMBER EA11001 REGARDING CORRODED BRAKE LINES ON CHEVY TRUCKS. I WAS COMING UP TO A RED LIGHT, SOME CARS AHEAD OF ME, GOING ABOUT 30 MPH. I APPLIED THE BRAKES. INITIAL PRESSURE ON THE PEDAL FELT NORMAL, THEN THE PEDAL RESISTANCE DROPPED TO ZERO. BY PUSHING THE PEDAL ALL THE WAY TO THE F…
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THIS COMPLAINT RELATES TO NHTSA ACTION NUMBER EA11001 REGARDING CORRODED BRAKE LINES ON CHEVY TRUCKS. I WAS COMING UP TO A RED LIGHT, SOME CARS AHEAD OF ME, GOING ABOUT 30 MPH. I APPLIED THE BRAKES. INITIAL PRESSURE ON THE PEDAL FELT NORMAL, THEN THE PEDAL RESISTANCE DROPPED TO ZERO. BY PUSHING THE PEDAL ALL THE WAY TO THE FLOOR I WAS ABLE TO STOP THE VEHICLE. I PULLED IN TO A GAS STATION. BRAKE FLUID WAS POURING OUT OF A LOCATION ALONG THE BRAKE LINE RUNNING TO THE BACK OF THE VEHICLE. LOCATION ABOUT WHERE THE CAB AND BED MEET. I WAS ABLE TO DRIVE SLOWLY TO A NEARBY CHEVY DEALER FOR REPAIRS. TOTAL REPAIR BILL WAS $2200. *TR
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
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.