NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
468 reports120,362 miles · Sep 29, 2013
Engine
TWO OF THE FACTORY EXHAUST MANIFOLD BOLTS ARE BROKEN ON THE DRIVERS SIDE OF THE ENGINE, THE BACK TWO NEAREST THE FIRE WALL. THERE IS AN EXHAUST LEAK DUE TO THE FACTORY EXHAUST MANIFOLD BOLTS BREAKING OFF, AND THE MANIFOLD IS LEAKING EXHAUST WHICH IS VERY CLOSE TO THE FIREWALL MATERIAL WHICH I AM WORRIED THAT MIGHT CATCH ON FIRE…
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TWO OF THE FACTORY EXHAUST MANIFOLD BOLTS ARE BROKEN ON THE DRIVERS SIDE OF THE ENGINE, THE BACK TWO NEAREST THE FIRE WALL. THERE IS AN EXHAUST LEAK DUE TO THE FACTORY EXHAUST MANIFOLD BOLTS BREAKING OFF, AND THE MANIFOLD IS LEAKING EXHAUST WHICH IS VERY CLOSE TO THE FIREWALL MATERIAL WHICH I AM WORRIED THAT MIGHT CATCH ON FIRE. GM SHOULD HAVE A RECALL ON THESE EXHAUST MANIFOLD BOLTS ON SILVERADOS TO FIX AND REPAIR THEM. *TR
NHTSA ODI #10546075
102,782 miles · Sep 29, 2013
Service Brakes
BRAKE LINE RUPTURED, ALL BRAKE LINES ARE CORRODED, I HAVE NEVER SEEN BRAKE LINES IN THIS BAD OF A CONDITION ON A VEHICLE THAT IS ONLY 12 YEARS OLD.CHEVY SHOULD OWN UP TO THEIR CHEAPNESS AND DO SAFETY RECALL. *TR
NHTSA ODI #10546064
149,000 miles · Sep 26, 2013
Service Brakes
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 40 MPH, HE DEPRESSED THE BRAKE PEDAL AND IT ABNORMALLY TRAVELED TO THE FLOORBOARD AND THE VEHICLE FAILED TO DECELERATE OR STOP. THE CONTACT AVOIDED TRAFFIC BY MANEUVERING TO THE SHOULDER OF THE HIGHWAY AND APPLYING THE EMERGENCY BRAKE. TH…
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 40 MPH, HE DEPRESSED THE BRAKE PEDAL AND IT ABNORMALLY TRAVELED TO THE FLOORBOARD AND THE VEHICLE FAILED TO DECELERATE OR STOP. THE CONTACT AVOIDED TRAFFIC BY MANEUVERING TO THE SHOULDER OF THE HIGHWAY AND APPLYING THE EMERGENCY BRAKE. THE CONTACT INSPECTED THE VEHICLE AND FOUND THAT THE BRAKE LINES SUFFERED FROM SEVERE CORROSION AND HAD BEGUN TO LEAK. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 149,000.
NHTSA ODI #10545470
106,000 miles · Sep 20, 2013
Service Brakes
I WAS TRAVELING SOUTH ON HIGH ST. IN CORTLAND OHIO, AND WENT TO APPLY THE BRAKES TO STOP FOR A LIGHT, THE PEDDLE WENT TO THE FLOOR. I AVERTED AN ACCIDENT BY STEERING LEFT AND APPLYING THE EMERGENCY BRAKE. *TR
NHTSA ODI #10544541
86,000 miles · Sep 6, 2013
Fuel/propulsion SystemService Brakes
WHILE DRIVING ON A RESIDENTIAL STREET I ATTEMPTED TO APPLY THE BRAKES AND THE BRAKE PEDAL WENT TO THE FLOOR. AFTER ABOUT 20 FEET THE TRUCK DID STOP WITH THE BRAKE PEDAL ALMOST ON THE FLOOR. THE TRUCK HAD TO BE TOWED AND THE FRONT BRAKE LINES WHERE RUSTED AND LEAKING AND REPLACED. THE REAR LINES ARE ALSO RUSTED AND NEED TO BE REP…
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WHILE DRIVING ON A RESIDENTIAL STREET I ATTEMPTED TO APPLY THE BRAKES AND THE BRAKE PEDAL WENT TO THE FLOOR. AFTER ABOUT 20 FEET THE TRUCK DID STOP WITH THE BRAKE PEDAL ALMOST ON THE FLOOR. THE TRUCK HAD TO BE TOWED AND THE FRONT BRAKE LINES WHERE RUSTED AND LEAKING AND REPLACED. THE REAR LINES ARE ALSO RUSTED AND NEED TO BE REPLACED.THE TOTAL COST IS ABOUT $500.00. I HAVE HAD TO REPLACE THE FULE LINE AS IT ALSO RUSTED AND LEAKED, THAT COST WAS $900.00. APPARENTLY GM HAS HAD NUMEROUS PROBLEMS WITH THIS. IN OVER 40 YEARS I HAVE NEVER SEEN LINES RUST THROUGH LIKE THIS.IT IS A SEROIUS PROBLEM AND COULD HAVE RESULTED IN A MAJOR ACCIDENT IF THE AREA HAD BEEN MORE CONGESTED AND SPEED GREATER.GM SHOULD BE PUTTING QUALITY MATERIAL ON SUCH A VITAL SYSTEM. ALSO THE REAR BRAKES WHERE ALMOST NON-EXISTENT DUE TO THE GM ABS DESIGN. THIS GIVES NO BRAKING ABILITY AND SHOULD NOT BE THAT WAY.AS FAR AS SAFETY GOES THIS SHOULD BE A NUMBER ONE ISSUE AS BRAKE FAILURE CAN BE LETAL, GAS LEAKING ISNT VERY SAFE EITHER.
NHTSA ODI #10542238
88,000 miles · Aug 26, 2013
Power TrainService Brakes
THIS TRUCK HAS BEEN A NIGHTMARE CONCERNING ALL ASPECTS OF BRAKING SYSTEM. FIRST AT 44,000 ABS SENSORS NEEDED TO BE REPLACED, THEN AT 53,400 ALL 4 NEW ROTORS AND PADS ALL THE WAY AROUND, 82,000 MILES PARKING BRAKE NEEDS REPLACED, 81,000 FRONT AXLE SEAL LEAKING, THEN AT APPROXIMATELY 88,000 MILES BRAKE LINES POPS WITH TRAILER ATT…
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THIS TRUCK HAS BEEN A NIGHTMARE CONCERNING ALL ASPECTS OF BRAKING SYSTEM. FIRST AT 44,000 ABS SENSORS NEEDED TO BE REPLACED, THEN AT 53,400 ALL 4 NEW ROTORS AND PADS ALL THE WAY AROUND, 82,000 MILES PARKING BRAKE NEEDS REPLACED, 81,000 FRONT AXLE SEAL LEAKING, THEN AT APPROXIMATELY 88,000 MILES BRAKE LINES POPS WITH TRAILER ATTACHED. TRUCK IS TOWED TO GARAGE ONLY TO FIND THAT BRAKE LINES ARE RUSTY AND POPPED. ALL LINES WERE SUPPOSED TO BE REPLACED TOTAL COST OVER $1,000. AT 96,600 NEED FRONT ROTORS AND REAR BRAKES, AT 126,00 NEED REAR ROTORS AND FRONT BRAKES AND 1 ORIGINAL BRAKE LINE FROM REAR TO FRONT AND RIGHT FRONT THAT NEVER WAS REPLACED. COST 268.00. USED DIFFERENT GARAGES FOR WORK AND BOTH HAVE HAD TROUBLE REPLACING HYDRAULIC LINES AND ONE IS A STATE INSPECTION STATION. BRAKING SYSTEM HAS COST ME A FORTUNE AND I WILL NOT BUY ANOTHER CHEVY DUE TO HIGH REPAIR COST. TRUCK WAS NOT NEGLECTED AND SERVICED REGULARLY. HAD TO REPLACE TRANSMISSION AT 114,000 MILES WHICH LEFT ME STRANDED ONCE AGAIN. *TR
NHTSA ODI #10537354
75,000 miles · Aug 1, 2013
Service Brakes
WHILE SLOWING TO TURN INTO SERVICE STATION BRAKE PEDAL WENT TO FLOOR WITHOUT ANY WARNING. BRAKE LINE HAD RUPTURED JUST BELOW DRIVERS DOOR. *TR
NHTSA ODI #10533091
71,000 miles · Jul 31, 2013
Service Brakes
BRAKE LINE FAILURE UNDER DRIVERS SIDE CAB. WHILE MY WIFE WAS DRIVING HOME THE BRAKE PEDAL WENT TO THE FLOOR. HAD IT TOWED TO FIRESTONE AND THEY ARE CURRENTLY DOING 1841.00 WORTH OF BRAKE REPAIRS. ALL 5 LINES AT THE ABS PUMP I WAS TOLD ARE COMPLETELY ROTTED THROUGH REQUIRING 7HRS OF LABOR. IN THE RACK NEXT TO ME IS A NEWER APP…
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BRAKE LINE FAILURE UNDER DRIVERS SIDE CAB. WHILE MY WIFE WAS DRIVING HOME THE BRAKE PEDAL WENT TO THE FLOOR. HAD IT TOWED TO FIRESTONE AND THEY ARE CURRENTLY DOING 1841.00 WORTH OF BRAKE REPAIRS. ALL 5 LINES AT THE ABS PUMP I WAS TOLD ARE COMPLETELY ROTTED THROUGH REQUIRING 7HRS OF LABOR. IN THE RACK NEXT TO ME IS A NEWER APPROX 04 SUBURBAN EXACT SAME FAILURE. MET A GENTLEMAN IN THE LOBBY WITH AN 03 - 2500 EXACT FAILURE, THE MECHANIC WORKING ON THE VEHICLE HAS THE SAME AS ME AND JUST COMPLETED THE EXACT SAME REPAIR. AND A FRIEND AT WORK WITH AN 01 JUST TOOK A WEEK DOING ALL THE LINES ON HIS. EXACT SAME REPAIR. PLEASE DO SOMETHING BEFORE SOME ONE DOES GET KILLED. 10 SECONDS EARLIER AND MY WIFE WOULD HAVE DRIVEN THIS 6000+LB TRUCK INTO SOMEONE IN FRONT OF HER AT 40 MPH INTO THE BUSIEST INTERSECTION OF TOWN. *TR
NHTSA ODI #10532855
60,000 miles · Jul 30, 2013
Seat Belts
PASSENGER SIDE SEAT BELT RETRACTOR LOCKS PASSENGERS INTO THE SEAT AND IT GETS TIGHTER UPON PASSENGER MOVEMENT AND WILL NOT RELEASE. THIS OCCURS ON LEVEL GROUND AND IT DOES NOT MATTER IF THE VEHICLE IS MOVING, STOPPED OR NOT RUNNING. THIS IS OVER A $600.00 COST TO THE CONSUMER NOT INCLUDING TAXES. *TR
NHTSA ODI #10532702
86,000 miles · Jul 19, 2013
Service Brakes
LUCKILY, I WAS STOPPED AT A LOCAL BANK ATM MACHINE, AND WHILE SITTING THERE, A PLUME OF VAPOR OCCURRED AROUND MY VEHICLE, WHICH I FIRST THOUGHT IT TO BE A RUPTURED COOLANT HOSE, AS THE VAPOR HAD THE SMELL OF SOME TYPE OF FLUID. I PULLED ASIDE AND SAW THAT IT WAS A RUPTURED BRAKE LINE. THIS OCCURRED IN FEBRUARY OF 2013 AND AGAIN …
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LUCKILY, I WAS STOPPED AT A LOCAL BANK ATM MACHINE, AND WHILE SITTING THERE, A PLUME OF VAPOR OCCURRED AROUND MY VEHICLE, WHICH I FIRST THOUGHT IT TO BE A RUPTURED COOLANT HOSE, AS THE VAPOR HAD THE SMELL OF SOME TYPE OF FLUID. I PULLED ASIDE AND SAW THAT IT WAS A RUPTURED BRAKE LINE. THIS OCCURRED IN FEBRUARY OF 2013 AND AGAIN IN JULY OF 2013, AS I JUST HAD ALL THE BRAKE LINES REPLACED. ON THE FIRST OCCURRENCE, I STARTING THINKING OUTSIDE THE BOX, THAT REGARDLESS OF THE EXPOSURE OF SUCH LINES IN THE NORTHEAST, THAT THEY SHOULD BE MADE OF A RESISTANT MATERIAL (RE: SS). LUCKILY I WAS STOPPED ON BOTH OCCASIONS, AND AT THE VERY SAME SPOT ON BOTH OCCURRENCES?? FIGURE THAT ONE OUT. I EVER MADE CONTACT TO GM, AS MOST VEHICLE EXHAUSTS ARE SS, NOW WHY DO THEY NOT MAKE BRAKE LINES AND FUEL LINES OUT OF SS? HEY! WE ALL THE KNOW THE REASON WHY! I TOTALLY FEEL THAT GM OWES ME AND MANY OTHERS A REIMBURSEMENT ON THE NEEDED REPAIRS. TRUTHFULLY! I AM LUCKY THAT MY VEHICLE WAS STOPPED ON BOTH OCCURRENCES! WHAT COULD HAPPEN IN SO MANY OTHER SITUATIONS! I USE MY VEHICLE A LOT TO TRANSPORT MY YOUNG GRANDCHILDREN, AND THANK GOD THAT THEY WERE NOT WITH ME, AND THAT I WAS NOT TRAVELING WHEN BOTH OF THESE INCIDENTS OCCURRED. THANK YOU FOR LETTING ME SUBMIT! *TR
NHTSA ODI #10525710
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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