IllustrationMULTIPLE BRAKE LINES RUPTURED, CAUSING BRAKE FAILURE. CRASHED INTO METAL GATE. *TR
2000 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2000 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 1500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
210–25K
3725–50K
8050–75K
10275–100K
152100–150K
97150K+
489 reports with mileage · 125 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes, Hydraulic. Review the 237 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 162 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 33 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
69 crash reports5 fire reports25 injury reports
Service Brakes complaints
162 reportsSOME FRIENDS BORROWED MY 2000 CHEVY SILVERADO TO HAUL SOME SHEET ROCK HEADED DOWN TO HARDWARE STORE AND ENDED UP CALLING ME WITH A SMOKING ENGINE TOLD THEM TO BRING IT BACK TO THE HOUSE. MY BUDDY SAID THE BRAKES DIDN'T STOP ALL THAT GOOD ON THE WAY OVER AND WENT RIGHT TO THE FLOOR LOOKING UNDER THE HOOD I HAD HIM PUSH THE BRAKE…
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SOME FRIENDS BORROWED MY 2000 CHEVY SILVERADO TO HAUL SOME SHEET ROCK HEADED DOWN TO HARDWARE STORE AND ENDED UP CALLING ME WITH A SMOKING ENGINE TOLD THEM TO BRING IT BACK TO THE HOUSE. MY BUDDY SAID THE BRAKES DIDN'T STOP ALL THAT GOOD ON THE WAY OVER AND WENT RIGHT TO THE FLOOR LOOKING UNDER THE HOOD I HAD HIM PUSH THE BRAKES AND FLUID SHOT OUT OF THE BREAK LINES RUNNING ALONG THE BODY FRAME THEY LOOK ALL CORRODED IN ONE LOCATION AND ONE OF THEM BURST. WE ARE FORTUNATE THE ONLY RAN TO THE HARDWARE STORE AND NOT ON THE HIGHWAY IT COULD OF ENDED VERY BADLY. *TR
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT HE ATTEMPTED TO STOP THE VEHICLE BUT ONCE THE VEHICLE REACHED 3 MPH, THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION WHERE THE CONTACT WAS ADVISED THAT THE WHEEL SPEED SENSOR NEEDED TO BE REMOVE…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT HE ATTEMPTED TO STOP THE VEHICLE BUT ONCE THE VEHICLE REACHED 3 MPH, THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION WHERE THE CONTACT WAS ADVISED THAT THE WHEEL SPEED SENSOR NEEDED TO BE REMOVED AND CLEANED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED AND STATED THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC). THE FAILURE MILEAGE WAS 75,000.
I STEPPED ON BRAKES AND THEY WENT TO FLOOR. HAD TO GO TO GARAGE AND REPLACE ENTIRE BRAKE LINE SYSTEM. THIS IS A MAJOR PROBLEM BECAUSE I HAVE ASKED A FEW PEOPLE WHO OWN CHEVY PICKUPS AND THEY ALL HAVE HAD SAME PROBLEM. *TR
I WAS DRIVING AND PUSHED THE BRAKES TO SLOW DOWN AND THE PEDAL WENT CLOSE TO THE FLOOR AND JUST BARELY SLOWED DOWN ENOUGH TO TURN OFF THE ROAD. LUCKILY NO OTHER VEHICLE IN MY WAY BECAUSE I COULDN'T STOP QUICK ENOUGH. TURNED OUT ONE OF THE BRAKE LINES RUSTED THROUGH AND THE REST ARE THAT RUSTED THAT THEY'LL HAVE TO BE REPLACED. …
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I WAS DRIVING AND PUSHED THE BRAKES TO SLOW DOWN AND THE PEDAL WENT CLOSE TO THE FLOOR AND JUST BARELY SLOWED DOWN ENOUGH TO TURN OFF THE ROAD. LUCKILY NO OTHER VEHICLE IN MY WAY BECAUSE I COULDN'T STOP QUICK ENOUGH. TURNED OUT ONE OF THE BRAKE LINES RUSTED THROUGH AND THE REST ARE THAT RUSTED THAT THEY'LL HAVE TO BE REPLACED. *TR
THE BRAKE LINE RUNNING FROM THE ABS MODULE TO THE FRONT PASSENGER WHEEL CORRODED TO THE POINT OF LEAKING BRAKE FLUID. THE BRAKE WARNING LIGHT CAME ON. THE TRUCK WAS THEN PARKED UNTIL IT COULD BE SERVICED. ALL BRAKE LINES WERE FOUND TO BE SEVERELY RUSTED & CORRODED. A SECOND LINE (FROM THE ABS MODULE TO THE REAR AXLE) DISINTE…
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THE BRAKE LINE RUNNING FROM THE ABS MODULE TO THE FRONT PASSENGER WHEEL CORRODED TO THE POINT OF LEAKING BRAKE FLUID. THE BRAKE WARNING LIGHT CAME ON. THE TRUCK WAS THEN PARKED UNTIL IT COULD BE SERVICED. ALL BRAKE LINES WERE FOUND TO BE SEVERELY RUSTED & CORRODED. A SECOND LINE (FROM THE ABS MODULE TO THE REAR AXLE) DISINTEGRATED UPON REMOVAL. THE WORST CORROSION WAS AT THE POINTS WHERE THE BRAKE LINES WERE CLIPPED INTO THE PLASTIC BRACKETS. *TR
APPLIED BRAKES TO STOP INITALLY STARTED TO STOP AND THEN PEDDLE WENT TO FLOOR AND COULD NOT STOP UNTIL ANOTHER 50 FEET OR SO. *TR
TOOK VEH. IN FOR HEADLIGHT ALIGNMENT. GOT INTO VEH. TO LEAVE AND THE BRAKE PEDAL WENT TO THE FLOORBOARD. MECHANIC SAID THE BRAKE LINE HAD RUSTED THROUGH. HE CHECK AND SAID ALL LINES WERE COMPLETELY RUSTED AND NEEDED TO BE REPLACED. THE VEH. HAD TO BE TOWED TO A CHEV. DEALER TO BLEED THE LINE. TOTAL COST INCLUDING ONE CALIPER THA…
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TOOK VEH. IN FOR HEADLIGHT ALIGNMENT. GOT INTO VEH. TO LEAVE AND THE BRAKE PEDAL WENT TO THE FLOORBOARD. MECHANIC SAID THE BRAKE LINE HAD RUSTED THROUGH. HE CHECK AND SAID ALL LINES WERE COMPLETELY RUSTED AND NEEDED TO BE REPLACED. THE VEH. HAD TO BE TOWED TO A CHEV. DEALER TO BLEED THE LINE. TOTAL COST INCLUDING ONE CALIPER THAT WAS TOO RUSTED WAS $794.11. I HAD BEEN TRAVELING ON THE EXPRESSWAY MOMENTS PRIOR TO GOING TO THE SERVICE STATION. HAD I NOT STOPPED THERE WHEN I DID, I HAVE NO DOUBT SERIOUS INJURIES WOULD HAVE OCCURRED AS THE BRAKE LINE RUSTED THROUGH. *TR
I WAS GOING DOWN A STREET IN OUR CITY SOMEONE STOPPED IN FRONT OF ME AND WHEN I APPLIED THE BRAKES THE PEDAL WENT TO THE FLOOR. I TURNED TO AVOID A CRASH AND RAN INTO A FENCE. I CHECKED WHEN I GOT THE TRUCK HOME I NOTICED A PUDDLE UNDER THE TRUCK WHEN I CHECKED IT WAS BRAKE FLUID. I REPLACED THE RUSTED LINE AND TWO WEEKS LATER I…
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I WAS GOING DOWN A STREET IN OUR CITY SOMEONE STOPPED IN FRONT OF ME AND WHEN I APPLIED THE BRAKES THE PEDAL WENT TO THE FLOOR. I TURNED TO AVOID A CRASH AND RAN INTO A FENCE. I CHECKED WHEN I GOT THE TRUCK HOME I NOTICED A PUDDLE UNDER THE TRUCK WHEN I CHECKED IT WAS BRAKE FLUID. I REPLACED THE RUSTED LINE AND TWO WEEKS LATER IT HAPPENED AGAIN TO DIFFERENT BRAKE LINE,THE TRUCK IS NOW SITTING IN MY DRIVE AND I CANT MOVE IT. *TR
LOST BRAKES WHILE PULLING INTO PARKING SPOT AT LOCAL GROCERY STORE. HAD TO STOMP E-BRAKE TO KEEP FROM HITTING CAR IN FRONT OF ME. LOOKED UNDERNEATH TO SEE BRAKE FLUID RUNNING DOWN FRAME RAIL. BRAKE LINE RUPTURED DUE TO RUSTING OUT. GOT LUCKY THIS HAPPENED A MILE FROM MY BROTHERS GARAGE... HE LOADED ME UP ON HIS CAR TRAILER AND T…
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LOST BRAKES WHILE PULLING INTO PARKING SPOT AT LOCAL GROCERY STORE. HAD TO STOMP E-BRAKE TO KEEP FROM HITTING CAR IN FRONT OF ME. LOOKED UNDERNEATH TO SEE BRAKE FLUID RUNNING DOWN FRAME RAIL. BRAKE LINE RUPTURED DUE TO RUSTING OUT. GOT LUCKY THIS HAPPENED A MILE FROM MY BROTHERS GARAGE... HE LOADED ME UP ON HIS CAR TRAILER AND TOOK TO GARAGE. UP ON THE LIFT WE WENT. RUST RUST RUST. NEED TO REPLACE BRAKE LINES FRONT TO BACK...FUEL LINES LOOK LIKE CRAP TOO. HAD THIS HAPPENED THE NEXT MORNING I WOULD PROBABLY HAVE TO TYPE THIS OUT FROM THE HOSPITAL AS THE WIFE AND I WERE DUE TO LEAVE THE NEXT MORNING ON OUR ANNIVERSARY TRIP. COME ON GM RECALL!!! *TR
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
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.