IllustrationBRAKES FAILED DUE TO LOSS OF BRAKE FLUID CAUSED BY RUSTED OUT BRAKE LINE FROM ABS UNIT. *TR
2001 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2001 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
290–25K
3825–50K
7150–75K
8075–100K
102100–150K
65150K+
385 reports with mileage · 83 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 147 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 133 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 32 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
48 crash reports5 fire reports20 injury reports
What owners actually said
468 reports2001 SILVERADO 1500 4WD EXT. CAB SHORT BED. ORIGINAL OWNER PURCHASED NEW IN 2001. JUST SO HAPPENS THAT I EXPERIENCED MY BRAKE FAILURE DURING A RETURN TRIP AFTER PURCHASING A USED LAWN TRACTOR THAT I WAS BRINGING BACK HOME ON MY 6X10 SINGLE AXLE TRAILER. I WAS APPROACHING THE OFF RAMP TO MY EXIT OFF OF MAJOR HIGHWAY TRAVELING AT …
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2001 SILVERADO 1500 4WD EXT. CAB SHORT BED. ORIGINAL OWNER PURCHASED NEW IN 2001. JUST SO HAPPENS THAT I EXPERIENCED MY BRAKE FAILURE DURING A RETURN TRIP AFTER PURCHASING A USED LAWN TRACTOR THAT I WAS BRINGING BACK HOME ON MY 6X10 SINGLE AXLE TRAILER. I WAS APPROACHING THE OFF RAMP TO MY EXIT OFF OF MAJOR HIGHWAY TRAVELING AT APPROXIMATELY 60 MPH. ALONG WITH OTHER VEHICLES TAKING EXIT ALSO I STARTED TO BRAKE TO GO INTO EXIT AND SUDDENLY WITH NO WARNING THE BRAKE PEDAL IMMEDIATELY WENT TO THE FLOOR AND I STARTED HEADING TO COLLIDE WITH THE VEHICLE IN FRONT OF ME THAT WAS SLOWING DOWN INTO THE TURN. I LUCKILY WAS ABLE TO SWERVE BACK ONTO THE SHOULDER OF THE HIGHWAY WITHOUT COLLISION TO ANY VEHICLE AND THEN PRESS DOWN ON EMERGENCY BRAKE TO COME TO A SLOW STOP. I MUST MENTION ALSO THAT I HAD MY 9 YEAR OLD SON WITH ME WHO WAS OBLIVIOUS TO EVERYTHING GOING ON UNTIL I EXPLAINED WHAT JUST HAPPENED. I HAD TO CALL MY WIFE TO COME SO THAT I COULD UNHOOK TRAILER FROM MY TRUCK AND HOOK BACK UP TO HER 2003 GMC YUKON. AFTER GATHERING MYSELF AND PONDERING THE SITUATION I THEN PROCEEDED TO DRIVE MY TRUCK HOME DOWNSHIFTING THE AUTO TRANS TO SLOW MYSELF AND USING EMERGENCY BRAKE TO COME TO A COMPLETE STOP AND SIT FOR REDLIGHTS. AFTER GETTING HOME I CRAWLED UNDER TRUCK TO DETERMINE WHERE MY FAILURE OCCURRED AND NOTICED A LARGE WET SPOT RIGHT UNDER THE DRIVERS SIDE FRONT DOOR WHERE ALL 4 BRAKE LINES RUN ALONGSIDE THE WIRING HARNESSES. THERE IS ALSO A LARGE BLACK PLASTIC CLIP AT THIS LOCATION THAT HOLDS THE 4 BRAKE LINES. THIS AREA IS IMMEDIATELY BEHIND THE FRONT TIRE WHICH IN MY OPINION TAKES A LARGE AMOUNT OF SPLASH UP FROM THE TIRE. I MUST MENTION THAT AT NO TIME DID ANY WARNING LIGHT COME ON AND HAS NOT COME ON YET. I HAD NO BRAKES...UNLIKE THE THEORY THAT I SHOULD HAVE HAD BRAKES ON THE OTHER CIRCUIT OF THE BRAKE SYSTEM. I HAVE NOT FIXED TRUCK YET DUE TO COST OF REPAIR. *TR
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THE VEHICLE WAS PARKED WHEN HE NOTICED FUEL WAS LEAKING FROM THE FUEL TANK. THE FUEL LEAK WAS THE RESULT OF RUST AND CORROSION. THE VEHICLE WAS NOT TAKEN TO A DEALER TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE A…
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THE VEHICLE WAS PARKED WHEN HE NOTICED FUEL WAS LEAKING FROM THE FUEL TANK. THE FUEL LEAK WAS THE RESULT OF RUST AND CORROSION. THE VEHICLE WAS NOT TAKEN TO A DEALER TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND REFERRED THE CONTACT TO NHTSA. THE FAILURE AND CURRENT MILEAGE WAS 101,000.
FUEL GAUGE INSIDE FOR THIS TRUCK CONTINUES TO GO TO 0 THEN JUMPS ALL OVER / GOES BACK TO HALF FULL THEN RETURNS TO THE RIGHT AMOUNT OF GAS IN THE TANK ALL THE TIME. *TR
BRAKE LINES ALL RUSTED CAUSING COMPLETE FAILURE.. ROCKER PANELS TOTALLY ROTTED OUT..
WHEN STARTING MY VEHICLE I HAD MY FOOT ON THE BRAKE, IN SHORT ORDER THE PEDAL WENT TO THE FLOOR. I TRIED PUMPING THE PEDAL BUT THE SOFT PEDAL FEEL DID NOT SUBSIDE AND THE PEDAL WOULD STILL GO TO THE FLOOR. I THEN GOT OUT AND CHECKED UNDER THE VEHICLE AND FOUND BRAKE FLUID POURING OUT OF A RUPTURED LINE. A PIN HOLE SIZED RUPTU…
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WHEN STARTING MY VEHICLE I HAD MY FOOT ON THE BRAKE, IN SHORT ORDER THE PEDAL WENT TO THE FLOOR. I TRIED PUMPING THE PEDAL BUT THE SOFT PEDAL FEEL DID NOT SUBSIDE AND THE PEDAL WOULD STILL GO TO THE FLOOR. I THEN GOT OUT AND CHECKED UNDER THE VEHICLE AND FOUND BRAKE FLUID POURING OUT OF A RUPTURED LINE. A PIN HOLE SIZED RUPTURE IS AT THE DRIVER REAR AXLE NEAR WHERE THE HARD LINE CONNECTS TO THE FLEX RUBBER LINE. I FEEL THAT IT IS RELEVANT THAT THOUGH THIS VEHICLE IS NOW IN A SOUTHERN STATE, THE FIRST FIVE YEARS OF ITS EXISTENCE WAS IN A SALT-BELT STATE. *TR
BRAKE LINE RUPTURE WHILE BACKING OUT OF GARAGE. *TR
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE ATTEMPTING TO PARK, THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOORBOARD AND SHE WAS UNABLE TO ENGAGE THE BRAKES. THE VEHICLE WOULD NOT STOP AND THE CONTACT CRASHED INTO A GUARD RAIL. A POLICE REPORT WAS NOT FILED AND NO INJURIES WERE REPORTED. TH…
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE ATTEMPTING TO PARK, THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOORBOARD AND SHE WAS UNABLE TO ENGAGE THE BRAKES. THE VEHICLE WOULD NOT STOP AND THE CONTACT CRASHED INTO A GUARD RAIL. A POLICE REPORT WAS NOT FILED AND NO INJURIES WERE REPORTED. THE VEHICLE WAS TOWED TO THE DEALER WHO DIAGNOSED THAT THE BRAKE LINES, ROTORS, AND BRAKE PADS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGE WAS 53,000. UPDATED 11/16/11 *BF UPDATED 11/21/11
LOST BRAKES AT A LOW SPEED DUE TO BRAKE LINE CORROSION. WILL NEED TO REPLACE ALL OTHER BRAKE LINES AS THEY ARE HEAVILY CORRODED AS WELL. THEN, JUST TODAY I TRIED TO APPLY MY PARKING BRAKE AND SOMETHING BROKE. THE PEDAL WENT ALL THE WAY TO THE FLOOR. BRAKE CABLE BROKE AND PARKING BRAKES REMAIN ON. WILL HAVE TO HAVE VEHICLE T…
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LOST BRAKES AT A LOW SPEED DUE TO BRAKE LINE CORROSION. WILL NEED TO REPLACE ALL OTHER BRAKE LINES AS THEY ARE HEAVILY CORRODED AS WELL. THEN, JUST TODAY I TRIED TO APPLY MY PARKING BRAKE AND SOMETHING BROKE. THE PEDAL WENT ALL THE WAY TO THE FLOOR. BRAKE CABLE BROKE AND PARKING BRAKES REMAIN ON. WILL HAVE TO HAVE VEHICLE TOWED FOR REPAIR ONCE AGAIN. I BELIEVE THAT IT WOULD BE PRUDENT TO TAKE A LOOK AT THIS FORUM AS I HAVE FOUND THAT MANY, MANY PEOPLE ARE HAVING ISSUES WITH CHEVROLET BRAKES. HTTP://TRUCKS.ABOUT.COM/B/2011/08/01/BRAKE-LINE-CORROSION-SUSPECTED-IN-GM-TRUCKS.HTM. *TR
WHEEL SPEED SENSORS REPLACED UNDER RECALL FAILED AGAIN FAILING TO STOP VEHICLE IN SAFE DISTANCE UNDER 10 MPH. HAD TO REPLACE BOTH WHEEL SPEED SENSORS AGAIN. WAS TOLD BRAKE LINES ALSO CORRODED. HAVE FOUND THAT A COMMON COMPLAINT ON CHEVY SILVERADO. *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.