NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
53 reportsClear category filter114,000 miles · Oct 7, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT WAS DRIVING 15 MPH WHEN THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD ABNORMALLY. THE CONTACT HAD TO UTILIZE THE EMERGENCY BRAKE IN ORDER TO STOP THE VEHICLE. AFTER THE VEHICLE WAS PARKED, THE CONTACT DISCOVERED THAT BRAKE FLUIDS WERE LEAKING. THE VEHICLE WAS TAKEN T…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT WAS DRIVING 15 MPH WHEN THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD ABNORMALLY. THE CONTACT HAD TO UTILIZE THE EMERGENCY BRAKE IN ORDER TO STOP THE VEHICLE. AFTER THE VEHICLE WAS PARKED, THE CONTACT DISCOVERED THAT BRAKE FLUIDS WERE LEAKING. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHO INSPECTED THE BRAKES AND BRAKE LINES AND FOUND THAT THE BRAKE LINE SYSTEM WAS RUSTED. THE MECHANIC STATED THAT ALL FOUR BRAKE LINES WOULD NEED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE WHO ADVISED THAT THE BRAKE FAILURE WAS CAUSED BY NORMAL WEAR AND TEAR. THE MANUFACTURER THEN ADVISED THAT A REPRESENTATIVE WOULD RETURN THE CONTACT'S CALL AT A LATER DATE. THE FAILURE MILEAGE WAS 114,000.
NHTSA ODI #10429078
29,000 miles · Aug 10, 2011
Service Brakes, Hydraulic
TOTAL BRAKE FAILURE DUE TO BRAKE LINE RUST THROUGH. NO PARTIAL SYSTEM BRAKE WAS AVAILABLE, THE PEDAL WENT RIGHT TO THE FLOOR WITH THE ONLY INDICATION BEING A COUPLE OF SOFT PEDAL PUMPS WITH MINIMAL BRAKING BEFORE TOTAL FAILURE. VEHICLE WAS TRAVELING IN CITY TRAFFIC. THERE HAD BEEN NO PANIC STOPS UP TO THIS POINT. NO ACCIDENT O…
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TOTAL BRAKE FAILURE DUE TO BRAKE LINE RUST THROUGH. NO PARTIAL SYSTEM BRAKE WAS AVAILABLE, THE PEDAL WENT RIGHT TO THE FLOOR WITH THE ONLY INDICATION BEING A COUPLE OF SOFT PEDAL PUMPS WITH MINIMAL BRAKING BEFORE TOTAL FAILURE. VEHICLE WAS TRAVELING IN CITY TRAFFIC. THERE HAD BEEN NO PANIC STOPS UP TO THIS POINT. NO ACCIDENT OCCURRED. I HAD TO USE EMERGENCY BRAKE TO STOP VEHICLE. VEHICLE IS NOW PARKED, WAITING FOR REPAIR. TOTAL BRAKE LINE REPLACEMENT NEEDED DUE TO MASSIVE RUSTING. *TR
NHTSA ODI #10418424
66,000 miles · Aug 2, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THAT WHEN PULLING INTO HIS DRIVEWAY, HE NOTICED THAT THE BRAKE PRESSURE WAS LOW AND THE PEDAL DEPRESSED TO THE FLOOR. THE VEHICLE WAS DIAGNOSED BY THE OWNER AND HE NOTICED THAT THE BRAKE LINES FRACTURED AND NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. T…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THAT WHEN PULLING INTO HIS DRIVEWAY, HE NOTICED THAT THE BRAKE PRESSURE WAS LOW AND THE PEDAL DEPRESSED TO THE FLOOR. THE VEHICLE WAS DIAGNOSED BY THE OWNER AND HE NOTICED THAT THE BRAKE LINES FRACTURED AND NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER HAD NOT BEEN NOTIFIED. THE FAILURE AND CURRENT MILEAGES WERE APPROXIMATELY 66,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10416725
70,000 miles · Jun 2, 2011
Service Brakes, HydraulicVehicle Speed ControlCrash
2002 GMC SIERRA 1500 5.3 STD CAB SLT WHILE BRAKING AT LOW SPEEDS THE ANTI LOCK BRACKET SYSTEM TRIGGERS CAUSING UNSAFE STOPPING DISTANCES. LUCKILY, I'VE NOT CRASH INTO ANOTHER CAR OR PERSON, BUT CURBS, SHOPPING CARTS AND DITCHES HAVE BEEN RUN INTO DUE TO THE TRUCK NOT STOPPING. THIS HAPPENS WHILE BRAKING UNDER 10MPH AND IT IS …
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2002 GMC SIERRA 1500 5.3 STD CAB SLT WHILE BRAKING AT LOW SPEEDS THE ANTI LOCK BRACKET SYSTEM TRIGGERS CAUSING UNSAFE STOPPING DISTANCES. LUCKILY, I'VE NOT CRASH INTO ANOTHER CAR OR PERSON, BUT CURBS, SHOPPING CARTS AND DITCHES HAVE BEEN RUN INTO DUE TO THE TRUCK NOT STOPPING. THIS HAPPENS WHILE BRAKING UNDER 10MPH AND IT IS RARELY POSSIBLE TO GET THE TRUCK TO NORMALLY BRAKE, OFTEN I HAVE TO KICK THE EMERGENCY BRAKE TO TRY AND SLOW THE TRUCK. WHEN BRAKING THE TRUCKS ABS SYSTEM KICKS IN THE BRAKE PEDAL GOES FROM SOFT AND MUSHY TO EXTREMELY HARD AND YOU CAN'T PRESS THE BRAKE PEDAL. I WEIGH 220PLUS AND WHEN THIS HAPPENS THERE IS REALLY NOTHING YOU CAN DO BESIDES STEER OUT OF HARMS WAY AND KEEP TAPING THE BRAKE PEDAL WAITING FOR THE ABS TO STOP. THIS HAPPENS EVERYDAY I'VE ALREADY HAD CHANGED OUT THE HUBS BEFORE KNOWING OF THIS ISSUE AND NOW I HAVE TO REPLACE THEM AGAIN . I'M EXPECTING TO HAVE TO PAY MORE THAN1000 US DOLLARS FOR POOR DESIGN AND RECALL EFFORTS ON GM. I'VE IN CHICAGO AND SUBURBS FOR THE ENTIRE LIFE OF THE TRUCK. I CAN BE REACHED AT [XXX] MY NAME IS [XXX] IN MY MOST RECENT BRAKE FAILURE, I WAS TURNING INTO MY DRIVEWAY AND THE ABS ACTIVATED AND BRAKE PEDAL GOT EXTREMELY TOUGH TO PRESS AND MY TRUCK ROLLED INTO MY OTHER PARKED CAR. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10404161
160,000 miles · May 24, 2011
Service Brakes, Hydraulic
2002 GMC SIERRA BRAKE LINE FAILURE. I WAS DRIVING TO WORK TODAY WHEN A SCHOOL BUS STOPPED IN FRONT OF ME TO DROP OFF SOME CHILDREN. AS I TRIED TO STOP MY BRAKE PEDAL WENT RIGHT TO THE FLOOR AND I WAS UNABLE TO STOP, I WAS GOING DOWN A FAIRLY STEEP HILL AND HAD TO STEER ONTO THE ROADS SHOULDER IN ORDER TO AVOID A COLLISION. MY T…
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2002 GMC SIERRA BRAKE LINE FAILURE. I WAS DRIVING TO WORK TODAY WHEN A SCHOOL BUS STOPPED IN FRONT OF ME TO DROP OFF SOME CHILDREN. AS I TRIED TO STOP MY BRAKE PEDAL WENT RIGHT TO THE FLOOR AND I WAS UNABLE TO STOP, I WAS GOING DOWN A FAIRLY STEEP HILL AND HAD TO STEER ONTO THE ROADS SHOULDER IN ORDER TO AVOID A COLLISION. MY TRUCK TRAVELED ABOUT 400 FEET BEFORE COMING TO A STOP. *TR
NHTSA ODI #10402493
92,900 miles · May 19, 2011
Service Brakes, Hydraulic
RECENT PRE-PURCHASE INSPECTION OF 2002 GMC SIERRA 4WD INDICATED EXCESSIVE CORROSION OF CHASSIS AND BRAKE LINES WHICH RESULTED IN A RECOMMENDATION OF IMMEDIATE BRAKE LINE REPLACEMENT TO PASS PENNSYLVANIA VEHICLE SAFETY INSPECTION CERTIFICATION. *TR
NHTSA ODI #10402079
63,212 miles · May 19, 2011
Service Brakes, Hydraulic
DRIVING ALONG AT APPROXIMATELY 25 MPH AND TRIED TO STOP FOR RED LIGHT AND BRAKE PEDDLE WENT TO FLOOR. WAS ABLE TO STOP AGAINST CURB. CHECKED AND FOUND BRAKE FLUID LEAKING FROM UNDER DRIVERS SIDE DOOR. VEHICLE FOUND TO HAVE RUSTED OUT BRAKE LINES. SPECIFICALLY LEAKING WERE THE LINES TO AND FROM THE ABS UNIT. ALL FOUR FORWARD FAC…
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DRIVING ALONG AT APPROXIMATELY 25 MPH AND TRIED TO STOP FOR RED LIGHT AND BRAKE PEDDLE WENT TO FLOOR. WAS ABLE TO STOP AGAINST CURB. CHECKED AND FOUND BRAKE FLUID LEAKING FROM UNDER DRIVERS SIDE DOOR. VEHICLE FOUND TO HAVE RUSTED OUT BRAKE LINES. SPECIFICALLY LEAKING WERE THE LINES TO AND FROM THE ABS UNIT. ALL FOUR FORWARD FACING LINES WERE RUSTED IN CLIP IN FRAME. AT LEAST TWO WERE LEAKING. REPLACED FOUR LINES OUT OF NINE MAY NEED OTHERS REPLACED IN FUTURE. TOOK PICTURE OF LEAKING AREA AND HAVE SECTION OF OLD LINE WITH LEAK. COST TO REPLACE THE FOUR LINES WAS LINES WAS $515.83. THIS PICK UP ONLY HAS 63K MILES. BRAKE LINES SHOULD LAST. *TR
NHTSA ODI #10402034
145,000 miles · Apr 25, 2011
Service Brakes, Hydraulic
BRAKE FAILURE. WENT TO STOP AT A STOP SIGN AND NO BRAKES. I WAS FAST ENOUGH ON THE EMERGENCY BRAKE TO AVOID A COLLISION. WAS ABLE TO MAKE IT HOME. CHECKED UNDER TRUCK AND THE METAL BRAKE LINE HAD RUPTURED. BRAKE LINES AND FUEL LINES ARE RUSTED. TRUCK IN SHOP NOW. *TR
NHTSA ODI #10397432
111,000 miles · Mar 3, 2011
Service Brakes, Hydraulic
2002 GMC SIERRA 1500 BRAKELINE FAILURE DUE TO SEVERE CORROSION OF HARD LINES UNDER DRIVERS SIDE . I WAS BACKING OUT OF A PARKING LOT WHEN BRAKE PEDAL WENT TO FLOOR AND HAD SEVERE LOSS OF BRAKING POWER. UNDER FURTHER INVESTIGATION ONE LINE WAS RUSTED THROUGH AND OTHERS SEVERELY CORRODED. *TR
NHTSA ODI #10386343
39,200 miles · Oct 24, 2010
Service Brakes, HydraulicCrash
* 3-MAY-06: VEHICLE TAKEN IN TO DEALER AT 29 K MI FOR RECALL TO INSPECT BOTH FRONT WHEEL ABS SPEED SENSORS. TOTAL INSPECTION TIME APPROX 10 MIN, NO REPAIRS MADE. ONE POSSIBLE BRAKING INCIDENT OCCURRED 3.5 YRS EARLIER. * 24-SEP-08, 38 K MI: FRONT BRAKE PADS REPLACED, NORMAL WEAR PATTERNS. BOTH REAR INNER DISK BRAKE PADS WORN T…
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* 3-MAY-06: VEHICLE TAKEN IN TO DEALER AT 29 K MI FOR RECALL TO INSPECT BOTH FRONT WHEEL ABS SPEED SENSORS. TOTAL INSPECTION TIME APPROX 10 MIN, NO REPAIRS MADE. ONE POSSIBLE BRAKING INCIDENT OCCURRED 3.5 YRS EARLIER. * 24-SEP-08, 38 K MI: FRONT BRAKE PADS REPLACED, NORMAL WEAR PATTERNS. BOTH REAR INNER DISK BRAKE PADS WORN TO METAL AND JAMMED, BOTH REAR OUTER PADS LITTLE WEAR, BOTH REAR DISKS HEAVILY SCORED AND REPLACED. VEHICLE HAS BEEN USED LITTLE FOR TOWING. REAR CALIPER NUTS REQUIRED AN ESTIMATED 350+ LBS TORQUE TO LOOSEN. * 31-JUL-09, 39 K MI: NEAR ACCIDENT ON HWY AT LOW SPEED AFTER VERY LONG STOP AT SLOW SPEED, THEN 3 MI LATER CRASH INTO CONCRETE ABUTMENT OCCURRED WHILE PARKING AT IDLE SPEED. LOUD GROANING HEARD FR ENGINE COMPARTMENT. SCAN TOOL INFO BY GM DEALER INDICATED BOTH FRONT ABS SPEED SENSORS WERE NOT SENDING A SIGNAL. BODY REPAIR TO FRONT $800 USING USED PARTS AND EXCLUDING ABS SENSOR REPLACEMENT. * NEAR TOTAL, REPRODUCIBLE BRAKE LOSS OCCURS BETWEEN APPROX 3 AND 7 MPH. PRESSING HARDER ON THE BRAKE PEDAL SEEMS TO LENGTHEN THE STOPPING DISTANCE. HEADLAMPS DIM WHEN TRYING TO STOP AT SLOW SPEED WHILE THE ABS PUMP IS GROANING. * PROBLEM HAS YET TO BE CORRECTED. *TR
NHTSA ODI #10362149
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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