NHTSA owner reports · September 18, 2026 snapshot.
Structure complaints
30 reportsClear category filter104,685 miles · Jun 12, 2014
Service BrakesStructure
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 35 MPH, THE BRAKE PEDAL TRAVELED TO THE FLOOR WHEN DEPRESSED. THE VEHICLE FAILED TO STOP UNTIL THE EMERGENCY BRAKE WAS ENGAGED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC, WHO INFORMED THAT THE FRONT DRIVER'S SIDE BRAKE LIN…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 35 MPH, THE BRAKE PEDAL TRAVELED TO THE FLOOR WHEN DEPRESSED. THE VEHICLE FAILED TO STOP UNTIL THE EMERGENCY BRAKE WAS ENGAGED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC, WHO INFORMED THAT THE FRONT DRIVER'S SIDE BRAKE LINE FRACTURED DUE TO EXCESSIVE CORROSION. THE FOUR BRAKE LINES WERE REPLACED. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 104,685. THE VIN WAS UNAVAILABLE. UPDATED 08/12/14*LJ UPDATED 07/06/2017 *CT
NHTSA ODI #10597911
83,000 miles · Nov 3, 2013
Structure
MY REAR BUMPER ON MY CHEVY 1500 4X4 SILVERADO TRUCK IS ROTTING OFF THE TRUCK, YES ROTTING NEVER IN MY LIFE I SEEN POOR QUALITY IN PARTS GM IS USING, REAR BUMPERS ARE SUPPOSE TO PROTECT YOU FROM A CRASH THIS BUMPER IS ROTTING OFF MY TRUCK THIS IS A SAFETY HAZARD AND SHOULD BE RECALLED. *TR
NHTSA ODI #10550691
45,000 miles · Sep 13, 2013
Service BrakesStructure
WANT 1600 DOLLARS TO REPLACE EVERY LINE ON THE TRUCK DUE TO RUST...INCLUDING FLEXIBLE HOSE TO WHEELS. DON'T HAVE VIN NO TRUCK AT SHOP UNTIL I DECIDE WHAT TO DO. *TR
NHTSA ODI #10543558
81,000 miles · Apr 12, 2013
StructureSuspension
RIGHT SIDE SPRING SHACKLE FAILED DUE TO EXCESSIVE CORROSION RIGHT SIDE OF REAR BUMPER CORRODED TO THE POINT THE MOUNT FAILED. *TR
NHTSA ODI #10508054
82,000 miles · Mar 7, 2013
StructureTires
TWICE I HAVE HAD THE SPARE TIRE WINCH CABLE BREAK ON ME,IF THIS WAS TO HAPPEN IN HEAVY TRAFFIC OR HIGH SPEEDS IT COULD CAUSE SERIOUS INJURY OR DEATH,AND I WAS NEVER AWARE IT WAS GONE UNTIL I NEEDED THE SPARE. *TR
NHTSA ODI #10501967
82,457 miles · Dec 14, 2012
Service BrakesSteeringStructure
TOOK TRUCK IN FOR STATE INSPECTION, TRUCK FAILED INSPECTION DUE TO RUSTED BRAKE LINES, POWER STEERING PUMP LEAKING , DEALER SAID IT WOULD BE $1228.43 TO $1420.99 TO JUST FIXED THE BRAKE LINES ALL LINES NEEDED REPLACED AND CALIPERS SCREWS. POWER STEERING PUMP COST 535.00 TO REPLACE. POOR QUALITY ,HIGH COST TO FIX AND LACK OF SA…
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TOOK TRUCK IN FOR STATE INSPECTION, TRUCK FAILED INSPECTION DUE TO RUSTED BRAKE LINES, POWER STEERING PUMP LEAKING , DEALER SAID IT WOULD BE $1228.43 TO $1420.99 TO JUST FIXED THE BRAKE LINES ALL LINES NEEDED REPLACED AND CALIPERS SCREWS. POWER STEERING PUMP COST 535.00 TO REPLACE. POOR QUALITY ,HIGH COST TO FIX AND LACK OF SAFETY ON GM PART FOR NOT COVERING RUBBER COATING OR USING STAINLESS STEEL LINES TO PROTECT OUR FAMILY VERY DISCOURAGED WITH SERVICE TECH SAID THESE ARE THE PRICES. WHAT HAPPENED TO OUR SAFETY. BRAKE LINES AND GAS LINES SHOULD NOT BE MADE OF STEEL THAT CAN CORRODE AND RUST OUT AND BREAK. POWER STEERING PUMP WITH THESE FEW MILES SHOULD NOT HAVE GONE OUT. MY 1988 CHEVY TRUCK NEVER HAD THESE PROBLEMS. THERE NEEDS TO BE A RECALL. *TR
NHTSA ODI #10488844
85,000 miles · Sep 21, 2012
Engine And Engine CoolingFuel System, GasolineStructure
THE PART OF THE FRAME THAT HOLDS UP THE GAS TANK AND CONNECTS TO THE SHOCK HAS ROTTED AWAY. I HAD TO REPLACE BOTH REAR LEAF SPRING SHACKLES DO TO RUST AS WELL AS THE LEFT REAR BRAKE LINE. THE REAR OF THE TRUCK IS RUSTING AWAY. I HAVE HAD TO REPLACE THE FUEL PUMP, THERE IS A KNOCK IN THE STEERING COLUMN THAT I HAVE HAD FIXED ONCE…
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THE PART OF THE FRAME THAT HOLDS UP THE GAS TANK AND CONNECTS TO THE SHOCK HAS ROTTED AWAY. I HAD TO REPLACE BOTH REAR LEAF SPRING SHACKLES DO TO RUST AS WELL AS THE LEFT REAR BRAKE LINE. THE REAR OF THE TRUCK IS RUSTING AWAY. I HAVE HAD TO REPLACE THE FUEL PUMP, THERE IS A KNOCK IN THE STEERING COLUMN THAT I HAVE HAD FIXED ONCE ALREADY, THE ENGINE HAS TICKING SOUND WHEN IDLING, AND THE A/C COMPRESSOR IS BROKEN. *TR
NHTSA ODI #10476723
121,000 miles · Sep 16, 2012
Service BrakesStructureSuspension
MOST RECENT(9/15/12),BRAKE LINE RUPTURES DO TO TONS OF RUST... . BODY MOUNTS TOTALLY RUSTED OFF , REAR BRAKE ROTOR DUST SHIELDS RUSTED OFF, LEAF SPRING SHACKLES RUSTED THRU AND FELL OFF..REAR BUMPER RUSTED THRU,TOTAL UNDER CARRIAGE RUSTED THRU, RAILSUNDER DOORS TOTALLY RUSTED THRU AND HAVE BIG HOLES IN THEM.. *TR *JS
NHTSA ODI #10475524
82,472 miles · Aug 12, 2012
Service BrakesStructure
I WAS DRIVING WHEN I WENT TO STOP AND THE PEDAL WAS SOFT. THE TRUCK STILL STOPPED BUT THE PEDAL DIDN'T FEEL RIGHT. I WAS ABLE TO GET TO MY IN-LAWS HOUSE,ABOUT 2 MILES. WHEN I GOT OUT I SAW BRAKE FLUID LEAKING FROM THE BRAKE LINES RUNNING ALONG THE FRAME ON THE DRIVERS SIDE. THEY ARE THE LINES THAT GO TO THE ABS MODULE. WHEN I IN…
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I WAS DRIVING WHEN I WENT TO STOP AND THE PEDAL WAS SOFT. THE TRUCK STILL STOPPED BUT THE PEDAL DIDN'T FEEL RIGHT. I WAS ABLE TO GET TO MY IN-LAWS HOUSE,ABOUT 2 MILES. WHEN I GOT OUT I SAW BRAKE FLUID LEAKING FROM THE BRAKE LINES RUNNING ALONG THE FRAME ON THE DRIVERS SIDE. THEY ARE THE LINES THAT GO TO THE ABS MODULE. WHEN I INSPECTED FURTHER, ALL 4 LINES WERE EITHER LEAKING OR ABOUT TO. THAT IS WHEN I NOTICED BOTH ROCKER PANELS, JUST UNDER THE DOORS, WERE RUSTED AND THE PASSENGER SIDE RUSTED THROUGH. THE DOORS ARE NOT RUSTED AND THERE IS VERY LITTLE RUST ON THE TRUCK EVEN WHERE THE PAINT HAS FLAKED OFF. *TR
NHTSA ODI #10470310
Mileage unknown · Jul 14, 2012
Service BrakesStructureVisibility
I WAS DRIVING DOWN LOCAL ROAD, WHEN THERE WAS A THREE CAR ACCIDENT WAY AHEAD. I SOWED RIGHT DOWN, MAY 25-30 MPH AS WE CAME UP ON IT, REALIZING AS I WENT TO SLOW DOWN MORE, MY BRAKE PEDAL WENT TO FLOOR. I MADE IT HOME AND PARKED. MY BOYFRIEND LOOKED AT IT NEXT MORNING, I HAD NO BRAKE FLUID LEFT, ONE OF THE LINES WAS SO CORRODED …
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I WAS DRIVING DOWN LOCAL ROAD, WHEN THERE WAS A THREE CAR ACCIDENT WAY AHEAD. I SOWED RIGHT DOWN, MAY 25-30 MPH AS WE CAME UP ON IT, REALIZING AS I WENT TO SLOW DOWN MORE, MY BRAKE PEDAL WENT TO FLOOR. I MADE IT HOME AND PARKED. MY BOYFRIEND LOOKED AT IT NEXT MORNING, I HAD NO BRAKE FLUID LEFT, ONE OF THE LINES WAS SO CORRODED THE FLUID LEAKED ALL OVER THE DRIVEWAY. I HAD RECENTLY HAD MY BRAKES DONE AND INSPECTION WITHIN THE PAST MONTH. I BOUGHT THE TRUCK BRAND NEW, AND HAVE HAD A LOT OF ISSUES WITH IT. INCLUDING ABS THAT WAS PREVIOUSLY RECALLED, AND NEVER WORKED AFTER IT WAS REPLACED, WHICH I DID COMPLAIN ABOUT, HE INTERIOR SET MATERIAL NEEDED REPLACING, THE TAIL GATE CABLES AND HINGES ARE BROKE, THE DEALER SAYS THERE IS NO RECALL ON THEM. A SENSOR WENT IN GAS TANK, THE DRIVERS SIDE MIRROR FELL OFF, THE WINDOW CABLE ON DRIVERS SIDE HAS BEEN REPLACED TWICE, PASSENGER SIDE ONCE, THE LIST GOES ON AND ON. LIKE I SAID, I BOUGHT IT BRAND NEW OFF THE LOT, TRADED IN OLDER CHEVY SILVERADO, PAID CASH WITH GM DISCOUNT. I LOVE MY TRUCK, BUT THINK IT HAS HAD WAY TOO MANY PROBLEMS. I HAVE DEFINITELY READ A LOT OF COMPLAINTS ON THE CORRODED GAS LINES AMONG OTHER ISSUES AND WOULD HOPE CHEVY WOULD STAND BEHIND THEIR PRODUCTS. *TR
NHTSA ODI #10465646
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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