NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
468 reports104,000 miles · Aug 27, 2014
Engine
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE STALLED ON SEVERAL OCCASION WITHOUT WARNING. THE CONTACT ALSO STATED THAT AFTER NUMEROUS OCCASIONS THE VEHICLE WAS ABLE TO RESTART. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAI…
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE STALLED ON SEVERAL OCCASION WITHOUT WARNING. THE CONTACT ALSO STATED THAT AFTER NUMEROUS OCCASIONS THE VEHICLE WAS ABLE TO RESTART. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 104,000.
NHTSA ODI #10628809
92,500 miles · Aug 26, 2014
Service BrakesCrash
THE BRAKE'S LOST PRESSURE AND ENDED UP REAR ENDING THE CAR IN FRONT OF ME. AFTER FURTHER EXAMINATION ALL THE BRAKES LINES ARE COMPLETELY RUSTED AND AND ONE OF THE LINES GAVE OUT COMPLETELY WHICH LEAD TO THE LOSS OF PRESSURE AND CAUSE OF WRECK. *TR
NHTSA ODI #10628508
89,000 miles · Aug 21, 2014
Service Brakes
AS I WAS LEAVING MY DRIVEWAY, WHEN I BRAKED, MY TRUCK WOULD NOT STOP, MADE A LOUD SOUND, BUT AFTER PUMPING THE BRAKE, IT FINALLY STOPPED. I HAD NEW BRAKES, PLUS ROTORS AND CALIBERS PUT ON TRUCK BEFORE ALL OF THIS HAPPENED, I FIGURED THEY DID SOMETHING WRONG, BUT TOOK IT BACK TO GOODYEAR AND THEY ASSURED ME THE BRAKES WERE OK, A…
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AS I WAS LEAVING MY DRIVEWAY, WHEN I BRAKED, MY TRUCK WOULD NOT STOP, MADE A LOUD SOUND, BUT AFTER PUMPING THE BRAKE, IT FINALLY STOPPED. I HAD NEW BRAKES, PLUS ROTORS AND CALIBERS PUT ON TRUCK BEFORE ALL OF THIS HAPPENED, I FIGURED THEY DID SOMETHING WRONG, BUT TOOK IT BACK TO GOODYEAR AND THEY ASSURED ME THE BRAKES WERE OK, AND THAT IT IS THE ABS. I ALMOST BROADSIDED ANOTHER VEHICLE. I NOTICED THAT THERE IS A RECALL ON THESE IN CERTAIN STATES, BUT MY STATE IS NOT LISTED IN THE RECALL. I CAN'T UNDERSTAND THIS BECAUSE IF MY ABS FAILS, THEY SHOULD INCLUDE ALL THE STATES IN THE RECALL, AS MINE EVIDENTLY NEEDS REPLACED. I WOULD LIKE TO KNOW WHY THIS IS, PLEASE, BECAUSE I THINK THAT IT IS AN EXPENSIVE FIX AND I THINK GM SHOULD REPLACE IT. I AM AFRAID TO DRIVE MY TRUCK NOW AND NEED TO RESOLVE THIS COMPLAINT AS I DO NEED TO GET BACK TO DRIVING IT. TKS *TR
NHTSA ODI #10627261
73,000 miles · Aug 20, 2014
Service Brakes
WHILE PULLING BOAT OUT OF WATER AT MARINA,PULLED TRUCK UP RAMP TO PARKING LOT AND WHEN MY BUDDY HIT THE BRAKES,THE BRAKE PEDAL WENT TO THE FLOORBOARD. WHEN WE LOOKED UNDER DRIVERS SIDE DOOR, WE COULD SEE BREAK FLUID LEAKING OUT OF BRAKE LINE. TOOK TO MECHANIC ,LINES ALL RUSTED OUT. CHECKED MY LINES ON MY 2001 CHEVY SILVERADO WHE…
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WHILE PULLING BOAT OUT OF WATER AT MARINA,PULLED TRUCK UP RAMP TO PARKING LOT AND WHEN MY BUDDY HIT THE BRAKES,THE BRAKE PEDAL WENT TO THE FLOORBOARD. WHEN WE LOOKED UNDER DRIVERS SIDE DOOR, WE COULD SEE BREAK FLUID LEAKING OUT OF BRAKE LINE. TOOK TO MECHANIC ,LINES ALL RUSTED OUT. CHECKED MY LINES ON MY 2001 CHEVY SILVERADO WHEN I GOT HOME,SAME PROBLEM, ALL RUSTED. TRUCK IS PARKED UNTIL RECALL. *TR
NHTSA ODI #10626660
1,250,000 miles · Aug 18, 2014
Fuel System, GasolinePower Train
WHILE ATTEMPTING TO SHIFT FROM THIRD TO FOURTH THE ENGINE APPEARED TO HAVE A STUCK THROTTLE CABLE. PULLED THE TRUCK SAFELY OFF THE ROAD AND CHECK THE THROTTLE CABLE MAKING SURE IT WAS NOT BROKEN OR KINKED. I RESTARTED THE TRUCK AND THE RPMS AT IDOL WERE AT 2000 AND THEN I PLACED THE TRUCK INTO FIRST GEAR AND BEGAN TO MOVE FORWAR…
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WHILE ATTEMPTING TO SHIFT FROM THIRD TO FOURTH THE ENGINE APPEARED TO HAVE A STUCK THROTTLE CABLE. PULLED THE TRUCK SAFELY OFF THE ROAD AND CHECK THE THROTTLE CABLE MAKING SURE IT WAS NOT BROKEN OR KINKED. I RESTARTED THE TRUCK AND THE RPMS AT IDOL WERE AT 2000 AND THEN I PLACED THE TRUCK INTO FIRST GEAR AND BEGAN TO MOVE FORWARD TOWARDS MY HOME. AS I SHIFTED FROM 1 TO SECOND THE RPMS BEGAN TO RISE. AS I PLACED THE TRUCK INTO NEUTRAL THE ENGINE CONTINUED TO INCREASE IN RPMS TO 3000 AND THEN ONTO 4000. I PLACED THE TRUCK IN NEUTRAL AND ALLOW THE MOTION OF THE ENGINE TO PUSH THE TRUCK FORWARD AND USING THE BRAKES I WAS ABLE TO KEEP SPEEDS BELOW 45 AND WHEN THE TRUCK CAME TO A COMPLETE STOP THE ENGINE RPMS CONTINUED TO RISE ABOVE 4000. AFTER GETTING THE TRUCK HOME AND INSPECTION OF THE THROTTLE BODY, A HALF CUP MOVABLE PLATE WAS FOUND ATTACHED TO THE BUTTERFLY..THIS HAD PREVENTED THE BUTTERFLY TO CLOSE AND HAD TORN FROM THE BUTTERFLY PLATE. I HAVE NOT FOUND ANY DOCUMENTATION ON THIS PLATE OR CUP ON ANY SITES NOR IS IT MENTIONED IN ANY OWNER MANUALS. I WAS LUCKY, BUT OTHERS WHO ARE NOT MECHANICALLY INCLINED MAY NOT KNOW WHAT TO DO OR EVEN AN INCREASE CHANCE OF AN ACCIDENT WHICH COULD RESULT IN A DEATH OR INJURY. *TR
NHTSA ODI #10626210
98,000 miles · Aug 13, 2014
Steering
WITHOUT WARNING AS I ATTEMPTED TO MAKE A TURN AT LOW SPEED JUST AFTER START UP OF THE ENGINE THE POWER STEERING FAILED. VEHICLE THEN REQUIRED BRUTE STRENGTH TURN TURN.WAS ABLE TO MAKE IT HOME AND GET REPAIRED BUT IF THIS HAD HAPPENED TO DAUGHTER OR WIFE THEY MIGHT NOT HAVE BEEN ABLE TO STEER VEHICLE BECAUSE OF STRENGTH REQUIRED.…
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WITHOUT WARNING AS I ATTEMPTED TO MAKE A TURN AT LOW SPEED JUST AFTER START UP OF THE ENGINE THE POWER STEERING FAILED. VEHICLE THEN REQUIRED BRUTE STRENGTH TURN TURN.WAS ABLE TO MAKE IT HOME AND GET REPAIRED BUT IF THIS HAD HAPPENED TO DAUGHTER OR WIFE THEY MIGHT NOT HAVE BEEN ABLE TO STEER VEHICLE BECAUSE OF STRENGTH REQUIRED. MY MECHANIC THAT REPAIRED VEHICLE STATED THAT HE HAS SEEN THIS OCCUR IN GM VANS BEFORE WITHOUT WARNING. SOMETHING TO DO WITH THE IMMEDIATE FAILURE OF POWER STEERING BOX. $362.00 REPAIR WITH LABOR. *TR
NHTSA ODI #10621945
103,000 miles · Aug 11, 2014
Service Brakes
BRAKES FAILED. BRAKE LINES BROKE DUE TO RUST. *TR
NHTSA ODI #10621523
114,000 miles · Aug 7, 2014
Service Brakes
THE BRAKE PEDAL HAS BEEN SOFT FOR QUITE A WHILE. DURING A PA. STATE SAFETY INSP. IT WAS DISCOVERED BY INSPECTION MECHANIC THAT THE BRAKE LINES WERE LEAKING IN MULTIPLE PLACES. HE WAS GOING TO REPLACE ONLY THE AFFECTED AREA AT FIRST BUT THEN DISCOVERED THE LINES WERE LEAKING IN MULTIPLE PLACES. THEREFORE ALL THE LINES HAD TO BE…
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THE BRAKE PEDAL HAS BEEN SOFT FOR QUITE A WHILE. DURING A PA. STATE SAFETY INSP. IT WAS DISCOVERED BY INSPECTION MECHANIC THAT THE BRAKE LINES WERE LEAKING IN MULTIPLE PLACES. HE WAS GOING TO REPLACE ONLY THE AFFECTED AREA AT FIRST BUT THEN DISCOVERED THE LINES WERE LEAKING IN MULTIPLE PLACES. THEREFORE ALL THE LINES HAD TO BE REPLACED. *TR
NHTSA ODI #10620747
115,350 miles · Jul 28, 2014
Service Brakes
I WAS CHANGING THE OIL ON MY 2001 SILVERADO 1500 LS WHICH HAS ABOUT 115,000 MILES IN MY DRIVEWAY. WHILE I WAS UNDER THE CAR, I NOTICED THAT THE BRAKE LINES (AROUND THE ABS UNIT) ALONG SIDE THE FRAME RAILS ON THE DRIVER SIDE IS BADLY CORRODED. I MAY WELL HAVE TO CHANGE THE LINES ASAP AS IT IS HAZARD TO DRIVE THE VEHICLE ON THE RO…
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I WAS CHANGING THE OIL ON MY 2001 SILVERADO 1500 LS WHICH HAS ABOUT 115,000 MILES IN MY DRIVEWAY. WHILE I WAS UNDER THE CAR, I NOTICED THAT THE BRAKE LINES (AROUND THE ABS UNIT) ALONG SIDE THE FRAME RAILS ON THE DRIVER SIDE IS BADLY CORRODED. I MAY WELL HAVE TO CHANGE THE LINES ASAP AS IT IS HAZARD TO DRIVE THE VEHICLE ON THE ROAD. IT MAY WELL BE FATAL FOR ME OR FOR ANYONE ELSE ON THE ROAD IN CASE THE BRAKE LINES BURST WHEN I APPLY THE BRAKE. DID NOT EXPECT THIS FROM GM. I HAVE TAKEN VERY GOOD CARE OF THE TRUCK SO FAR AND THIS IS WHAT I GET BACK - GLARING ISSUES WHICH CAN GET ANYONE INJURED SERIOUSLY/KILLED. PLEASE DO SOMETHING ABOUT THIS AND GET GM TO FIX THIS FOR ALL AFFECTED CONSUMERS BEFORE A WAKE UP CALL IN THE FORM OF A FATAL ACCIDENT. *JS
NHTSA ODI #10616903
110,000 miles · Jul 27, 2014
Air BagsCrashInjury
SUBURBAN WAS TRAVELING @ APPROXIMATELY 35 MILES PER/HOUR WHEN A TOYOTA FORERUNNER ILLEGALLY PULLED IN FRONT @ A SPEED OF APPROX 5-10 PER HOURS AND CAUSED A HEAD-COLLISION. FORERUNNERS AIRBAGS DEPLOYED BUT THE SUBURBAN DID NOT CAUSING INJURY TO OCCUPANT OF THE SUBURBAN. THE SUBURBAN'S DAMAGE WAS BOTH RADIATORS WERE SPLIT INTO …
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SUBURBAN WAS TRAVELING @ APPROXIMATELY 35 MILES PER/HOUR WHEN A TOYOTA FORERUNNER ILLEGALLY PULLED IN FRONT @ A SPEED OF APPROX 5-10 PER HOURS AND CAUSED A HEAD-COLLISION. FORERUNNERS AIRBAGS DEPLOYED BUT THE SUBURBAN DID NOT CAUSING INJURY TO OCCUPANT OF THE SUBURBAN. THE SUBURBAN'S DAMAGE WAS BOTH RADIATORS WERE SPLIT INTO 2 ALSO CAR NEEDED OVER 10,000.00 WORTH OF MAJOR REPAIRS TO FRONT END. AFTER CRASH CAR WOULD NOT START. POSSIBLE IGNITION PROBLEM. *JS
NHTSA ODI #10616617
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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