NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
164 reportsClear category filter66,400 miles · Aug 24, 2009
Service Brakes, Hydraulic
ABS BRAKES ENGAGE AT SLOW SPEEDS (UNDER 10MPH) WHILE COMING TO A STOP. WHILE APPLYING THE BRAKE THE ABS ACTIVATES AND THE VEHICLE LUNGES FORWARD A FEW FEET UNTIL THE NORMAL BRAKING ACTIVATES. THIS EXACT COMPLAINT WAS ADDRESSED BY CHEVROLET ON SAFETY RECALL BULLETIN 05058C AND THIS REPAIR WAS COMPLETED ON THIS VEHICLE BACK IN 2…
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ABS BRAKES ENGAGE AT SLOW SPEEDS (UNDER 10MPH) WHILE COMING TO A STOP. WHILE APPLYING THE BRAKE THE ABS ACTIVATES AND THE VEHICLE LUNGES FORWARD A FEW FEET UNTIL THE NORMAL BRAKING ACTIVATES. THIS EXACT COMPLAINT WAS ADDRESSED BY CHEVROLET ON SAFETY RECALL BULLETIN 05058C AND THIS REPAIR WAS COMPLETED ON THIS VEHICLE BACK IN 2005. THE DESIGN OF THE HUB ALLOWS THE RELUCTOR WHEEL TO RUST WHICH IN TURN DOESN'T ALLOW THE SPEED SENSOR TO ACHIEVE A CORRECT READING AND HAS CREATED THE EXACT SAME ISSUE AS ADDRESSED IN THE ORIGINAL SAFETY RECALL. *TR
NHTSA ODI #10281583
18,000 miles · Aug 5, 2009
Service Brakes, Hydraulic
THE BRAKES ON MY 2002 CHEVY SILVERADO DO NOT WORK PROPERLY THE BRAKE PADS ONLY SEEM TO RUB ON THE FRONT OF THE ROTORS SO WE REPLACED THE ROTORS & BRAKE PADS & THE PROBLEM IS STILL THERE THE STOPPING TIME IS NOT WHERE IT SHOULD BE. *TR
NHTSA ODI #10279520
18,031 miles · May 8, 2009
Service Brakes, HydraulicSteeringVisibility
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN ID NUMBER (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE DEALER CLEANED THE SPEED SENSOR, BUT DID NOT REPLACE ANY PARTS. THE FAILURE HAS RECURRED AND THE BRAKES STICK WHEN ATTEMPTING TO STOP THE VEHICLE AT LOW SPEEDS. ON T…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN ID NUMBER (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE DEALER CLEANED THE SPEED SENSOR, BUT DID NOT REPLACE ANY PARTS. THE FAILURE HAS RECURRED AND THE BRAKES STICK WHEN ATTEMPTING TO STOP THE VEHICLE AT LOW SPEEDS. ON THE FOURTH TRIP TO THE DEALER, THE CONTACT WAS INFORMED THAT NO FAILURES COULD BE FOUND. SHE IS UNSURE IF THE DEALER WILL REPLACE OR CLEAN THE SENSOR, BUT SHE REQUESTED THAT IT BE REPLACED. IN ADDITION, THE INTERMEDIATE STEERING SHAFT WAS REPLACED WITH A RE-MANUFACTURED PART IN JULY OF 2005 AT 18,031 MILES. IN NOVEMBER OF 2006, AT 29,650 MILES, THE STEERING SHAFT WAS LUBED. IN APRIL OF 2008, AT 43,194 MILES, THE STEERING SHAFT WAS REPLACED A SECOND TIME. CURRENTLY, AT 56,000 MILES, THE VEHICLE IS STILL EXPERIENCING ISSUES. THE DEALER MUST CHECK AND REPLACE THE SHAFT FAILURES EVERY 25,000 MILES. LASTLY, THE REAR BRAKE ROTORS WERE RESURFACED FOUR TIMES AND ALL OF THE WINDOW REGULATORS HAVE TO BE REPLACED. THE VEHICLE IS CURRENTLY AT THE DEALER TO HAVE ALL OF THE ISSUES REPAIRED. THE FAILURE MILEAGE WAS 18,031. UPDATED 07/02/09. *LJ
NHTSA ODI #10268182
22,338 miles · Apr 17, 2009
Service Brakes, Hydraulic
I CURRENTLY OWN A 2002 SILVERADO 1500 Z71 WITH 22,300 MILES. TODAY WHILE DRIVING IT I NOTICED THAT THE BRAKES WERE A LITTLE SOFTER THEN NORMAL AND NOT STOPPING THE TRUCK VERY WELL. SHORTLY AFTER THAT WHILE COMING TO A STOP I PRESSED THE BRAKES HARDER AND THEY WENT TO THE FLOOR AND I HAD VERY LITTLE TO NO STOPPING. I HAD TO USE T…
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I CURRENTLY OWN A 2002 SILVERADO 1500 Z71 WITH 22,300 MILES. TODAY WHILE DRIVING IT I NOTICED THAT THE BRAKES WERE A LITTLE SOFTER THEN NORMAL AND NOT STOPPING THE TRUCK VERY WELL. SHORTLY AFTER THAT WHILE COMING TO A STOP I PRESSED THE BRAKES HARDER AND THEY WENT TO THE FLOOR AND I HAD VERY LITTLE TO NO STOPPING. I HAD TO USE THE E-BRAKE TO STOP THE TRUCK AND GET IT OFF THE ROAD. IT SEEMS THAT THE BRAKE LINES FROM THE MASTER CYLINDER TO THE ABS BOX RUSTED OUT. THIS TRUCK IS NOT A DAILY DRIVER AND RARELY WILL SEE A ROAD WHEN THERE IS SALT ON IT. WITH THIS FEW OF MILES I DON'T THINK THIS SHOULD HAPPEN DUE TO THE FACT THAT I WAS LUCKY AND COULD HAVE BEEN IN A BAD ACCIDENT. I HAVE ALSO FOUND OUT THAT THIS HAS HAPPENED ON A LOT OF OTHER SILVERADO/SIERRAS. CURRENTLY THE LINES ARE STILL BROKEN AND HAVE YET TO BE REPLACED BUT WILL NEED TO BE. *TR
NHTSA ODI #10265909
66,800 miles · Mar 30, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING LESS THAN 10 MPH, THE ANTI-LOCK BRAKES ACTIVATED UNEXPECTEDLY. AT HIGHWAY SPEEDS, THE BRAKE PEDAL WOULD EXTEND ALL THE WAY TO THE FLOOR OR FREEZE TO THE POINT WHERE IT COULD NOT BE DEPRESSED AT ALL. THE VEHICLE WAS TAKEN TO A DEALER AND THEY FOUND A RECALL/SAF…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING LESS THAN 10 MPH, THE ANTI-LOCK BRAKES ACTIVATED UNEXPECTEDLY. AT HIGHWAY SPEEDS, THE BRAKE PEDAL WOULD EXTEND ALL THE WAY TO THE FLOOR OR FREEZE TO THE POINT WHERE IT COULD NOT BE DEPRESSED AT ALL. THE VEHICLE WAS TAKEN TO A DEALER AND THEY FOUND A RECALL/SAFETY IMPROVEMENT ACT THAT LISTED THE SAME FAILURES AS THE CONTACT'S YEAR, MAKE, AND MODEL VEHICLE. HOWEVER, HIS VIN WAS NOT INCLUDED IN THE RECALL. THE MANUFACTURER STATED THAT THEY COULD NOT ASSIST WITH THE REPAIRS; THEREFORE, THE CONTACT WOULD HAVE TO PAY OVER $500 TO HAVE THE VEHICLE REPAIRED. THE NHTSA CAMPAIGN ID NUMBER WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE LESS THAN 66,800.
NHTSA ODI #10263683
79,000 miles · Feb 17, 2009
Service Brakes, Hydraulic
LOSS OF BRAKES DUE TO ROTTED BRAKE LINES ON A 2002 CHEVY SILVERADO. *TR
NHTSA ODI #10258907
19,000 miles · Feb 4, 2009
Parking BrakeService Brakes, HydraulicUnknown Or Other
I AM WRITING REGARDING THE VERY POOR BRAKE LIFE AND PERFORMANCE FAILURE ON MY 2002 CHEVROLET PICKUP, 1500 SERIES PURCHASED NEW FROM A LOCAL DEALER. AT 19,500 MILES THE BRAKES WERE DIAGNOSED (ON 1-15-09) BY THE DEALER AS NEEDING COMPLETE OVERHAUL, A COST OF $571.00. THE PROBLEM WAS NOTICEABLE AT 12,000 MILES BY EXCESSIVE PEDAL T…
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I AM WRITING REGARDING THE VERY POOR BRAKE LIFE AND PERFORMANCE FAILURE ON MY 2002 CHEVROLET PICKUP, 1500 SERIES PURCHASED NEW FROM A LOCAL DEALER. AT 19,500 MILES THE BRAKES WERE DIAGNOSED (ON 1-15-09) BY THE DEALER AS NEEDING COMPLETE OVERHAUL, A COST OF $571.00. THE PROBLEM WAS NOTICEABLE AT 12,000 MILES BY EXCESSIVE PEDAL TRAVEL, THE SAME WITH THE EMERGENCY BRAKE. NO ACTION WAS TAKEN OR NOTICE OF BRAKE WEAR INDICATED BY THE DEALER WHEN NOTIFIED. BY 17,000 MILES THE BRAKES WERE NOISY AND WHEN INFORMED THE DEALER SAID MY REAR ROTORS WERE RUSTY FROM LOW USE AND I SHOULD CONSIDER A REPLACEMENT. UNABLE TO BELIEVE MY BRAKES WERE WORN OUT ( I'M 65 YEARS OLD AND HAVE NEVER HAD A VEHICLES' BRAKES WEAR OUT ANY WHERE NEAR THIS MILEAGE) I DECIDED TO DRIVE IT MORE OFTEN TO REMOVE THE RUST. DURING THIS TIME MY TEENAGE DAUGHTER, WITH ME AS A PASSENGER, NEARLY HIT A SEMI UNEXPECTEDLY BLOCKING OUR LANE, BECAUSE THE BRAKES WORKED VERY POORLY. THIS WAS IN THE FALL OF 08. IN NOVEMBER AND DECEMBER 08, I WROTE TO THE DEALER REQUESTING COST SHARING FOR BRAKE REPAIR. NO RESPONSE.. THEN, IN LATE DECEMBER I WROTE TO GM , CUSTOMER AFFAIRS, IN DETROIT,MI. REQUESTING COST SHARING DUE TO PREMATURE WEAROUT. THEY REQUESTED THE COST ESTIMATE ON 1-15-09 AND THEN REFUSED OR DENIED ANY ASSISTANCE BASED ON "LOW USE". I AM WELL AWARE OF A BROAD PROBLEM WITH EARLY BRAKE WEAR ON 2001 TO 2004 (ADMITTED BY SERVICE REPS AT THE DEALER) LIGHT DUTY GM TRUCKS, MOSTLY DUE TO RUSTY ROTORS, ESPECIALLY ON THE REARS. THIS IS FURTHER EVIDENCED BY THE DEALER ESTIMATE WHICH SHOWED EXPENSIVE REPLACEMENT "CERAMIC" PADS, WHICH WERE NOT ORIGINAL EQUIPMENT. THE DEALER ALSO ADMITTED THAT AT ONE TIME THEY TRIED TO ADD A "KIT" TO SHIELD THE REAR ROTORS FROM SALT SPRAY. THESE ARE ALL EVIDENCE OF DEFECTIVE PARTS, SOMETHING THAT SHOULD BE COVERED BY WARRANTY REGARDLESS OF THE VEHICLES AGE OR FREQUENCY OF USE. OR COVERED BY A RECALL. YOUR WEBSITE SHOWS THOUSANDS OF COMPLAINTS ON THIS ITEM. PLEASE ADD MINE. *TR
NHTSA ODI #10257475
62,012 miles · Jan 13, 2009
Service Brakes, HydraulicVehicle Speed ControlWheels
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING LESS THAN 10 MPH ON NORMAL ROAD CONDITIONS, THE VEHICLE WAS SLOW TO RESPOND WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT EXPERIENCED EXTREME DIFFICULTY COMING TO A COMPLETE STOP. IN ADDITION, THE STOPPING DISTANCE WAS INCREASED. THE VEHICLE WAS TAKEN TO AN…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE DRIVING LESS THAN 10 MPH ON NORMAL ROAD CONDITIONS, THE VEHICLE WAS SLOW TO RESPOND WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT EXPERIENCED EXTREME DIFFICULTY COMING TO A COMPLETE STOP. IN ADDITION, THE STOPPING DISTANCE WAS INCREASED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR INSPECTION AND THEY STATED THAT THE FRONT WHEEL SPEED SENSOR CABLES HAD EXCESSIVE RUST. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 62,012 AND CURRENT MILEAGE WAS 62,200.
NHTSA ODI #10254895
101,000 miles · Dec 11, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE ANTILOCK BRAKES ACTIVATED WHILE DRIVING 5 MPH OR LESS. NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK) WAS REFERENCED. THE FAILURE COULD CAUSE INCREASED STOPPING DISTANCES DURING LOW SPEED BRAKING APPLICATIONS, WHICH COULD…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE ANTILOCK BRAKES ACTIVATED WHILE DRIVING 5 MPH OR LESS. NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK) WAS REFERENCED. THE FAILURE COULD CAUSE INCREASED STOPPING DISTANCES DURING LOW SPEED BRAKING APPLICATIONS, WHICH COULD RESULT IN A CRASH. THE RECALL APPLIES TO 21 OTHER STATES EXCEPT FOR KENTUCKY. THE VEHICLE HAS NOT BEEN TAKEN TO THE DEALER YET FOR DIAGNOSTIC TESTING. THE FAILURE MILEAGE WAS 101,000.
NHTSA ODI #10251463
44,000 miles · Dec 10, 2008
Service Brakes, HydraulicCrash
BRAKE FAILURE 2002 CHEVY SILVERADO 44,000 MILES. LOW SPEED PARKING $2,500 DAMAGE RESULTS IN NO BRAKES. *TR
NHTSA ODI #10251298
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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