IllustrationABS FAILING AT LOW SPEEDS. HAVE CLEANED BOTH SENSORS, CHECKED VOLTAGE AND THE PROBLEM STILL OCCURS. I HIT MY GATE AT THE HOUSE WHERE I PARK THE TRUCK BECAUSE THE TRUCK WOULD NOT STOP AND RAN FORWARD. *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, Hydraulic complaints
237 reportsAT SLOW SPEEDS OF APPROXIMATELY 6 TO 8 MPH THE VEHICLE WILL NOT STOP OR IS VERY DIFFICULT TO STOP AND AT SLOW SPEEDS THE ABS ACTIVATES FOR NO REASON. THERE IS A RECALL # 05068C THAT MY VIN IS INCLUDED HOWEVER VEHICLES LOCATED IN NC ARE NOT INCLUDED. MY VEHICLE HAS BEEN DRIVEN IN DIFFERENT STATES INCLUDING NY, PA AND NJ. I FEE…
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AT SLOW SPEEDS OF APPROXIMATELY 6 TO 8 MPH THE VEHICLE WILL NOT STOP OR IS VERY DIFFICULT TO STOP AND AT SLOW SPEEDS THE ABS ACTIVATES FOR NO REASON. THERE IS A RECALL # 05068C THAT MY VIN IS INCLUDED HOWEVER VEHICLES LOCATED IN NC ARE NOT INCLUDED. MY VEHICLE HAS BEEN DRIVEN IN DIFFERENT STATES INCLUDING NY, PA AND NJ. I FEEL THIS VEHICLE IS UNSAFE AND I AM CONCERNED ABOUT DAMAGE OR INJURY TO MYSELF OR OTHERS. GM AND THE DEALER SIR WALTER CHEVROLET IN RALEIGH, NC REFUSE TO FIX THIS PROBLEM UNDER RECALL. *TR
I OWN A 2000 CHEVROLET SILVERADO 4X4 PICK UP. THE ABS GOES OFF AT SLOW SPEEDS UNDER 10MPH YOU LOOSE CONTROL OF THE BRAKING ABILITY OF THE VEHICLE. THE VEHICLE WOULD'NT STOP. I ALMOST DRIFTED INTO TRAFFIC. *CN
I HAD TO HAVE ALL THE ROTORS AND PADS REPLACED ON THE REAR OF MY 2000 SILVERADO WITH LESS THEN 8000 MILES DUE TO ALL COMPONENT'S RUSTING OUT. *TR
ON DECEMBER 12, 2009, MY 2000 CHEVY SILVERADO WAS INVOLVED IN A TWO VEHICLE COLLISION AS A RESULT OF MY ABS SENSORS ACTIVATING AT LOW SPEEDS. I WAS UNABLE TO STOP THE VEHICLE WHICH IN NORMAL HARD BRAKING WOULD HAVE STOPPED WITH OUT PROBLEM. THERE WAS DAMAGE TO MY FRONT BUMPER AS WELL AS THE VEHICLE IN FRONT OF ME. APPARENTL…
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ON DECEMBER 12, 2009, MY 2000 CHEVY SILVERADO WAS INVOLVED IN A TWO VEHICLE COLLISION AS A RESULT OF MY ABS SENSORS ACTIVATING AT LOW SPEEDS. I WAS UNABLE TO STOP THE VEHICLE WHICH IN NORMAL HARD BRAKING WOULD HAVE STOPPED WITH OUT PROBLEM. THERE WAS DAMAGE TO MY FRONT BUMPER AS WELL AS THE VEHICLE IN FRONT OF ME. APPARENTLY RECALL SERVICE WORK WAS PERFORMED ON NOVEMBER 11, 2005 TO FIX THE EXACT SAME PROBLEM THAT PLAQUES NEARLY 1.3 MILLION GM TRUCKS FROM 1999 TO 2002. THE ABS SENSORS BECOME CORRODED AND ACTIVATE AT LOW SPEEDS, GREATLY INCREASING THE STOPPING DISTANCE OF A LOW SPEED BREAKING SITUATION. THE RECALL MAY HAVE REPLACED THE SENSORS BUT IT DID NOT SOLVE THE PROBLEM AS I AM NOW A VICTIM OF THE SAME FAILING SENSORS NEARLY 4 YEARS LATER. I HAD NO WARNINGS THAT THE SENSORS WAS NOT OPERATING CORRECTLY AND UNTIL THE CRASH OCCURRED AND I RESEARCHED THE PROBLEM, I HAD NO PRIOR KNOWLEDGE OF THE CORROSION PROBLEMS WITH THE ABS SENSORS AND THE RECALL GM ISSUED AS A RESULT. I FEEL THAT THE ORIGINAL RECALL DID NOT SOLVE THE PROBLEM AND GM SHOULD BE TELLING CONSUMERS ABOUT THIS ONGOING PROBLEM. *TR
MY 2000 CHEVROLET SILVERADO PICK-UP TRUCK RESIDES IN THE SALT BELT AREA OF THE US AND HAS EXPERIENCED BRAKE LINE RUSTING WHICH CAUSES WITHOUT WARNING TOTAL FAILURE OF BRAKES. I EXPERIENCED THIS FAILURE WITH THE FRONT BRAKES IN DECEMBER OF 2008 AND AGAIN LAST WEEK, THIS TIME THE REAR BRAKES. THE DEALER AND GENERAL MOTORS WILL N…
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MY 2000 CHEVROLET SILVERADO PICK-UP TRUCK RESIDES IN THE SALT BELT AREA OF THE US AND HAS EXPERIENCED BRAKE LINE RUSTING WHICH CAUSES WITHOUT WARNING TOTAL FAILURE OF BRAKES. I EXPERIENCED THIS FAILURE WITH THE FRONT BRAKES IN DECEMBER OF 2008 AND AGAIN LAST WEEK, THIS TIME THE REAR BRAKES. THE DEALER AND GENERAL MOTORS WILL NOT ASSIST IN THE COST REPAIR AND WILL NOT DO ANYTHING TO CORRECT THIS SEVERE SAFETY CONCERN. I HAD ALL THE FRONT BRAKE LINES REPLACED BY GM AFTER THE FAILURE LAST YEAR WHEN THE BRAKE LINES RUST THROUGH, THERE IS NO FAIL SAFE IN THE BRAKE SYSTEM AND YOU EXPERIENCE TOTAL LOSS OF BRAKES. I DON'T KNOW WHAT IS REQUIRED FOR A SAFETY RECALL, BUT THESE BRAKE LINE ARE SUBSTANDARD AND NEED TO BE REPLACED BY GM BEFORE A LOSS OF LIFE. *TR
BRAKE LINES RUSTING INTO ON 2000 CHEVY TRUCK. *TR
BRAKES FAILED AT A STOP SIGN. BRAKE FLUID WAS LEAKING. MECHANIC TOLD ME THAT THE REAR BRAKE LINING WAS COMPLETELY RUSTED OUT. THIS ALSO HAPPENED TO THE FRONT BRAKE LINING IN 2007. THIS TRUCK IS ONLY DRIVEN ABOUT 20 MILES A WEEK SINCE 2002. I HAVE MAINTAINED THIS VEHICLE UP TO DATE. HAD OTHER CHEVROLET TRUCKS OLDER AND NEVE…
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BRAKES FAILED AT A STOP SIGN. BRAKE FLUID WAS LEAKING. MECHANIC TOLD ME THAT THE REAR BRAKE LINING WAS COMPLETELY RUSTED OUT. THIS ALSO HAPPENED TO THE FRONT BRAKE LINING IN 2007. THIS TRUCK IS ONLY DRIVEN ABOUT 20 MILES A WEEK SINCE 2002. I HAVE MAINTAINED THIS VEHICLE UP TO DATE. HAD OTHER CHEVROLET TRUCKS OLDER AND NEVER HAD A PROBLEM WITH ANY RUST FROM SNOW OR SALT. *TR
I DID THE RECALL FOR MY BRAKES ON CHEVY SILVERADO 2000 BUT STILL THE BRAKE LINE WAS CUT BY THE RIM I THINK THIS IS NOT SAFE TO HAVE 16 INCH RIMS ON. IT IS BETTER TO UPGRADE TO 17 INC RIM I TALKED TO GMC BUT THEY SAID THE RECALL FIXED THE LINE, BUT IT IS STILL TOO CLOSE TO THE RIM. IN THE EVENT IF THE VEHICLE HITS A POT HOLE TH…
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I DID THE RECALL FOR MY BRAKES ON CHEVY SILVERADO 2000 BUT STILL THE BRAKE LINE WAS CUT BY THE RIM I THINK THIS IS NOT SAFE TO HAVE 16 INCH RIMS ON. IT IS BETTER TO UPGRADE TO 17 INC RIM I TALKED TO GMC BUT THEY SAID THE RECALL FIXED THE LINE, BUT IT IS STILL TOO CLOSE TO THE RIM. IN THE EVENT IF THE VEHICLE HITS A POT HOLE THE RIM THEN IT WILL CUT THE BRAKE LINE AND FAIL. *TR
BRAKE LINE FAILURE ON 2000 CHEVY SILVERADO 1500. HAS HAPPENED TWICE DUE TO LINES RUSTING OUT, AND NOW MECHANIC SAYS FUEL LINES ARE RUSTING OUT. I LIVE IN KY WITH LITTLE SALT AND HAVE HEARD NUMEROUS OTHER COMPLAINTS ABOUT THE SAME ISSUE. DRIVING ALONG AND BAM, NO BRAKES DUE TO CORROSION. LAST TIME IT HAPPENED TO MY WIFE AND PREGN…
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BRAKE LINE FAILURE ON 2000 CHEVY SILVERADO 1500. HAS HAPPENED TWICE DUE TO LINES RUSTING OUT, AND NOW MECHANIC SAYS FUEL LINES ARE RUSTING OUT. I LIVE IN KY WITH LITTLE SALT AND HAVE HEARD NUMEROUS OTHER COMPLAINTS ABOUT THE SAME ISSUE. DRIVING ALONG AND BAM, NO BRAKES DUE TO CORROSION. LAST TIME IT HAPPENED TO MY WIFE AND PREGNANT DAUGHTER IN LAW. SOMEONE IS GOING TO GET SERIOUSLY HURT OR KILLED IF IT HASN'T ALREADY HAPPENED. GM HAS OUR TAX DOLLARS AND SHOULD USE SOME OF IT TO RECALL AND FIX THIS DEADLY PROBLEM. THIS IS COSTING BETWEEN $400.00 TO $600.00 TO REPAIR. LOCAL MECHANIC HAS SAID IT IS A CONSTANT PROBLEM WITH THESE VEHICLES IN THIS YEAR RANGE, ALONG WITH TAHOES. *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.