IllustrationBEGAN TO SMELL GAS AND COULD VISUAL SEE FUEL LEAKING FROM IN THE AREA OF THE FUEL TANK. MECHANIC CONFIRMED FUEL WERE LEAKING DUE TO CORROSION. *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 reportsWAS APPROACHING A RED LIGHT AT APPROX 30 MILES PER HOUR WHEN THE BRAKE PEDAL SIMPLY "POPPED" AND WENT ALL THE WAY TO FLOOR. I WAS ABLE TO MUSCLE IT TO A STOP BETWEEN THE VERY LITTLE BRAKING LEFT, DOWNSHIFTING AND THE EMERGENCY BRAKE. MECHANIC DETERMINED ALL BRAKE LINES RUSTED AND LEAKING. *TR
MY TOWING HITCH/RECEIVER BROKE WHILE TOWING A TRAILER AND TURNING A CORNER AT 10 MPH, 2 BLOCKS FROM MY HOUSE. THE DRIVERS SIDE OF THE HITCH WAS SO BADLY RUSTED, IT BROKE, THE PASSENGER SIDE WAS STRONG ENOUGH THAT MY TRAILER STAYED BEHIND MY 2 WD TRUCK AND NO ONE WAS INJURED. THIS INCIDENT COULD HAVE HURT SOMEONE HAD I BEEN GOING…
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MY TOWING HITCH/RECEIVER BROKE WHILE TOWING A TRAILER AND TURNING A CORNER AT 10 MPH, 2 BLOCKS FROM MY HOUSE. THE DRIVERS SIDE OF THE HITCH WAS SO BADLY RUSTED, IT BROKE, THE PASSENGER SIDE WAS STRONG ENOUGH THAT MY TRAILER STAYED BEHIND MY 2 WD TRUCK AND NO ONE WAS INJURED. THIS INCIDENT COULD HAVE HURT SOMEONE HAD I BEEN GOING FASTER IN TRAFFIC WHEN IT BROKE. NOW, AFTER THIS HAPPENED, I LEARNED THAT THE 2002 TRUCKS HAVE HAD THIS ISSUE FOR SOME TIME! *TR
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING VARIOUS SPEEDS, THE ANTILOCK BRAKE SYSTEM ACTIVATED AUTOMATICALLY AND THE ANTILOCK BRAKE SYSTEM WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED, BUT WAS REPAIRED BY THE CONTACT WHO REMOVED THE ANTILOCK BRAKE SYSTEM SENSOR. THE MANUFACTURER WAS NOTIF…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING VARIOUS SPEEDS, THE ANTILOCK BRAKE SYSTEM ACTIVATED AUTOMATICALLY AND THE ANTILOCK BRAKE SYSTEM WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED, BUT WAS REPAIRED BY THE CONTACT WHO REMOVED THE ANTILOCK BRAKE SYSTEM SENSOR. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 160,000.
LEAVING FROM WORK AT THE GREATER CINCINNATI AIRPORT. DRIVING DOWN THE RAMP TO THE STOP SIGN AT DONALDSON RD. WHILE ATTEMPTING TO BRAKE FOR THE STOP SIGN THE BRAKE PEDAL WENT TO THE FLOOR CAUSING THE TRUCK TO GO THROUGH THE STOP SIGN ACROSS THE EAST BOUND LANES OF DONALDSON ROAD AND FINALLY STOP BEFORE ENTERING A DITCH ON THE NOR…
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LEAVING FROM WORK AT THE GREATER CINCINNATI AIRPORT. DRIVING DOWN THE RAMP TO THE STOP SIGN AT DONALDSON RD. WHILE ATTEMPTING TO BRAKE FOR THE STOP SIGN THE BRAKE PEDAL WENT TO THE FLOOR CAUSING THE TRUCK TO GO THROUGH THE STOP SIGN ACROSS THE EAST BOUND LANES OF DONALDSON ROAD AND FINALLY STOP BEFORE ENTERING A DITCH ON THE NORTH SIDE OF THE ROAD. AT FIRST, I WAS GOING TO HAVE THE CAR TOWED. I FOUND THAT THERE WAS SOME RESIDUAL BRAKING LEFT AND I, SLOWLY, DROVE THE CAR APPROXIMATELY 12 MILES TO MY HOUSE. THE NEXT DAY I TOOK THE CAR TO THE LOCAL SHOP AND UPON INSPECTION WAS TOLD THAT ONE OF THE BRAKE LINES HAD FAILED DUE TO CORROSION. I WAS ALSO TOLD THAT "ALL" BRAKE LINES NEEDED TO BE REPLACED DUE TO CORROSION. TOTAL BILL WAS OVER 1200 DOLLARS. 2002 CHEVROLET SILVERADO EXTENDED CAR/LONG BED 1500. *TR
2002 CHEVY SILVERADO TRUCK WAS SITTING IN DRIVEWAY I WAS READY TO LEAVE PUSHED ON THE BRAKE TO PUT IT IN DRIVE AND THE PEDAL WENT TO THE FLOOR . LOOKED UNDER THE VEHICLE FLUID EVERWHERE. NOT ONE LEAK OR ANY SIGN BEFORE. I KNEW WHAT IT WAS BECAUSE I KNOW AT LEAST 4 OTHER PEOPLE WITH CHEVY TRUCKS AND THIER LINES WENT, 1 HAD AN …
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2002 CHEVY SILVERADO TRUCK WAS SITTING IN DRIVEWAY I WAS READY TO LEAVE PUSHED ON THE BRAKE TO PUT IT IN DRIVE AND THE PEDAL WENT TO THE FLOOR . LOOKED UNDER THE VEHICLE FLUID EVERWHERE. NOT ONE LEAK OR ANY SIGN BEFORE. I KNEW WHAT IT WAS BECAUSE I KNOW AT LEAST 4 OTHER PEOPLE WITH CHEVY TRUCKS AND THIER LINES WENT, 1 HAD AN ACCIDENT RUNNING IN TO THE REAR OF A CAR. I HAVE A NEW LINE SET BUT DIDN'T GET TO IN TIME. IF THAY HADN'T FAILED IN MY DRIVEWAY THE OUTCOME WOULD HAVE BEEN INTIERLY DIDERENT WITH MY SON HIS FRIEND AND MYSELF. ONE WOULD THINK THEY WOULD USE A MATERIAL TO WITHSTAND THE ELEMENTS ON BRAKES!!!!! MY WORK TRUCK TRUCK IS A 2001 SILVERADO SO I CHECKED IT AND THERE GONE ALSO. I WOULD BE WILLING TO BET THAT MOST PEPOLE FIX THE LINES AND DON'T REPORT. TO ME THIS IS A BIG PROBLEM. *TR
BRAKES FAILED DUE TO RUSTING BRAKE LINES. *TR
THE INCIDENT HAPPENED WHILE DRIVING HOME FROM TOLEDO OHIO TO HOME IN WHITE LAKE MICHIGAN. MY EXIT WAS NORMAL WHEN EXITING THE FREEWAY. I APPLIED BRAKES TO BEGIN SLOWING DOWN. AS I APPROACHED THE END OF THE EXIT RAMP THE TRAFFIC LIGHT WAS RED WITH OTHER VEHICLES WAITING. I APPLIED THE BRAKES HARDER AND HEARD A POPPING NOISE. …
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THE INCIDENT HAPPENED WHILE DRIVING HOME FROM TOLEDO OHIO TO HOME IN WHITE LAKE MICHIGAN. MY EXIT WAS NORMAL WHEN EXITING THE FREEWAY. I APPLIED BRAKES TO BEGIN SLOWING DOWN. AS I APPROACHED THE END OF THE EXIT RAMP THE TRAFFIC LIGHT WAS RED WITH OTHER VEHICLES WAITING. I APPLIED THE BRAKES HARDER AND HEARD A POPPING NOISE. THE BRAKE PEDAL WENT TO THE FLOOR. I TRIED TO PUMP THE BRAKES TO GET THEM TO WORK TO NO AVAIL. RATHER THAN RUNNING IN TO STOPPED CARS I RAN MY TRUCK OFF THE ROAD. I WAS LUCKY THAT I WAS ABLE TO STOP MY TRUCK WITHOUT HITTING THE VEHICLES WAITING FOR THE LIGHT. I WENT ONLINE TO REVIEW THIS AND FOUND THERE ARE NUMEROUS COMPLAINTS. ONE COMMENT FROM GM IS THAT THE VEHICLE WILL STOP IF A LINE RUPTURES. NOT TRUE. ALSO, SINCE WHEN ARE BRAKE LINES A MAINTENANCE ISSUE AND NOT A SAFETY ISSUE. MY MANUAL DOESN'T SAY REPLACE BRAKE LINES EVERY 20,00 MILES OR 5 YEARS. *TR
WAS LEAVING A PAINTBALL FIELD PARKING LOT. WAS MOVING AT IDLE SPEED OF 5MPH AND WENT TO SLOW DOWN TO HEAR SOMEONE YELLING SOMETHING. PEDAL WENT TO THE FLOOR. I CONTINUED TO THE STOP SIGN AND THE PEDAL ONCE AGAIN WENT STRAIGHT TO THE FLOOR. I HAD TO DRIVE 23.5 MILES TO GET BACK HOME USING THE OLD SCHOOL METHOD OF DOWN SHIFTING AN…
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WAS LEAVING A PAINTBALL FIELD PARKING LOT. WAS MOVING AT IDLE SPEED OF 5MPH AND WENT TO SLOW DOWN TO HEAR SOMEONE YELLING SOMETHING. PEDAL WENT TO THE FLOOR. I CONTINUED TO THE STOP SIGN AND THE PEDAL ONCE AGAIN WENT STRAIGHT TO THE FLOOR. I HAD TO DRIVE 23.5 MILES TO GET BACK HOME USING THE OLD SCHOOL METHOD OF DOWN SHIFTING AND APPLYING THE LITTLE BIT OF BRAKES I HAD LEFT. ****VERY DANGEROUS**** ONCE I GOT HOME I CHECKED MY BRAKE RESERVOIR AND IT WAS HALF FULL. UNDER THE TRUCK INSPECTION SHOWED FLUID FROM THE DRIVERS DOOR ALL THE BACK TO THE REAR END. I COULD NOT SEE WHERE THE LEAK ORIGINATED FROM. WILL HAVE TO TAKE TO A MECHANIC AND PAY. *TR
WHERE CLUTCH MASTER CYLINDER MOUNTS IN CLUTCH PEDAL ASSY BROKE. WAS UNABLE TO GET OUT OF GEAR CAUSING ME TO HIT A POLE. DAMAGING BUMPER HOOD FENDER HEADLIGHT TURN SIGNAL AND GRILL. CALLED THE DEALER THEY TOLD ME THAT CLUTCH BRAKING ISSUES WHILE DRIVING IS NOT A SAFETY ISSUE. I HAVE DONE SOME CHECKING AND THERE ARE A LOT OF PEOPL…
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WHERE CLUTCH MASTER CYLINDER MOUNTS IN CLUTCH PEDAL ASSY BROKE. WAS UNABLE TO GET OUT OF GEAR CAUSING ME TO HIT A POLE. DAMAGING BUMPER HOOD FENDER HEADLIGHT TURN SIGNAL AND GRILL. CALLED THE DEALER THEY TOLD ME THAT CLUTCH BRAKING ISSUES WHILE DRIVING IS NOT A SAFETY ISSUE. I HAVE DONE SOME CHECKING AND THERE ARE A LOT OF PEOPLE WITH THIS ISSUE BUT BECAUSE GM SAYS NOT A SAFETY ISSUE THEY JUST WANT TO SELL US PARTS TO FIX THIS PROBLEM. *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.