IllustrationFAILURE OF RUSTED OR ROTTED BRAKE LINE. DRIVER SIDE REAR WHEEL. SLOW LEAK, DETECTED AND MADE REPAIRS MYSELF. SECOND FAILURE IN 2011, DIFFERENT LOCATION, BY ABS MODULE, NO WARNING COMPLETE FAILURE, LUCKILY HAD EMERGENCY BRAKE, AND HORSE TRAILER BRAKES TO BRING VEHICLE TO A STOP. *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 reportsTL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH OR LESS, HE NOTICED THAT THE ABS WOULD ACTIVATE AND INCREASE STOPPING DISTANCE AND TIME WHEN BRAKING. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY OFFERED NO ASSISTANC…
Read full complaint
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH OR LESS, HE NOTICED THAT THE ABS WOULD ACTIVATE AND INCREASE STOPPING DISTANCE AND TIME WHEN BRAKING. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 155,150. THE VIN WAS NOT AVAILABLE.
FRONT BRAKE LINES FAILED DUE TO CORROSION APPROACHING A TRAFFIC LIGHT. RAN OFF ROAD TO AVOID COLLISION. APPROXIMATELY 2 YEARS LATER, REAR BRAKE LINES FAILED DUE TO CORROSION. BACKING PLATES ON REAR DISKS HAVE COMPLETELY RUSTED AWAY. ALL CALIPERS AND ROTORS HAVE BEEN REPLACED AND ALL PARKING BRAKE CABLES HAVE BROKEN DUE TO CO…
Read full complaint
FRONT BRAKE LINES FAILED DUE TO CORROSION APPROACHING A TRAFFIC LIGHT. RAN OFF ROAD TO AVOID COLLISION. APPROXIMATELY 2 YEARS LATER, REAR BRAKE LINES FAILED DUE TO CORROSION. BACKING PLATES ON REAR DISKS HAVE COMPLETELY RUSTED AWAY. ALL CALIPERS AND ROTORS HAVE BEEN REPLACED AND ALL PARKING BRAKE CABLES HAVE BROKEN DUE TO CORROSION. THIS TRUCK ONLY HAS 57,000 MILES! *TR
I APPLIED BRAKES GOING DOWN HILL WHEN ALL OF A SUDDEN THE PEDAL WENT ALL THE WAY TO THE FLOOR CAUSING MY VEHICLE TO BE VERY UNRESPONSIVE TO BRAKING ALMOST CAUSING ME TO CRASH. I WAS ABLE TO STOP THE TRUCK AFTER A LENGTHY TIME. I WOULD NOT HAVE BEEN ABLE TO STOP UP ANY CONDITIONS IF NEEDED TO DO SO IF THERE WASN'T A LONG AREA OF …
Read full complaint
I APPLIED BRAKES GOING DOWN HILL WHEN ALL OF A SUDDEN THE PEDAL WENT ALL THE WAY TO THE FLOOR CAUSING MY VEHICLE TO BE VERY UNRESPONSIVE TO BRAKING ALMOST CAUSING ME TO CRASH. I WAS ABLE TO STOP THE TRUCK AFTER A LENGTHY TIME. I WOULD NOT HAVE BEEN ABLE TO STOP UP ANY CONDITIONS IF NEEDED TO DO SO IF THERE WASN'T A LONG AREA OF ROAD TO GRADUALLY STOP LIKE I HAD. I'M REALLY CONCERNED BECAUSE THIS TRUCK WAS GARAGED MOST OF ITS LIFE AND IS VERY LOW MILEAGE(45K). IT HAS NO RUST ON BODY, ONLY ON THE BRAKE LINES AND I BELIEVE THE FUEL LINES. *TR
ANTI-LOCK BRAKES ENGAGE AS VEHICLE COMES TO A STOP. VEHICLE ENDS UP 2-5 FEET FURTHER THAN DESIRED STOPPING LOCATION. HUBS, HAVE BEEN REPLACED, ROTORS HAVE BEEN REPLACED 4 TIMES WITH ONLY 61K MILES ON VEHICLE THAT IS GARAGE KEPT. NOTHING HAS FIXED PROBLEM. VEHICLE IS DANGEROUS TO DRIVE. *TR
DRIVING ON RT 280 IN NJ. TRAFFIC WAS MERGING TO ONE LANE, GOT CUT OFF BY MERGING CAR, HIT BRAKES HARD, PEDAL WENT TO FLOOR, WAS ABLE TO STOP BY FLOORING PEDAL, DOWNSHIFTING AND USING RUMBLE STRIP. BRAKE LINES UNDER TRUCK ARE COMPLETELY RUSTED, IT APPEARS TO HAVE FAILED IN MORE THAN ONE SPOT. *TT
I LOST MY BRAKES COMPLETELY, LUCKILY I SUSPECTED A BRAKE LINE LEAKAGE DUE TO THE BRAKE FLUID NEEDING TO BE REFILLED PRIOR TO MY TRIP. THERE WAS CONFUSION AMONGST DRIVERS AHEAD OF ME MERGING ONTO THE HIGHWAY, EVERYONE GOT HARD ON THEIR BRAKES INCLUDING ME. MY ABS KICKED ON AND IMMEDIATELY THE LINE RUPTURED, I SAW A MIST OF BRAKE …
Read full complaint
I LOST MY BRAKES COMPLETELY, LUCKILY I SUSPECTED A BRAKE LINE LEAKAGE DUE TO THE BRAKE FLUID NEEDING TO BE REFILLED PRIOR TO MY TRIP. THERE WAS CONFUSION AMONGST DRIVERS AHEAD OF ME MERGING ONTO THE HIGHWAY, EVERYONE GOT HARD ON THEIR BRAKES INCLUDING ME. MY ABS KICKED ON AND IMMEDIATELY THE LINE RUPTURED, I SAW A MIST OF BRAKE FLUID IN THE DRIVERS SIDE MIRROR AND MY BRAKE PEDAL DROPPED TO THE FLOOR RENDERING MY BRAKES USELESS. I MISSED REAR ENDING THE PERSON IN FRONT OF ME BY INCHES. MY TRUCK IS CURRENTLY IN THE SHOP GETTING ALL OF THE BRAKE LINES REPLACED DUE TO THE FACT THAT THEY ARE ALL RUSTED FROM FRONT TO BACK AND DEEMED UNSAFE. *KB
RAN OUT OF FUEL ON HIGHWAY,FUEL GAUGE ALL OF A SUDDEN DROP TO EMPTY TRUCK STALLED OUT,JUST RECENTLY PURCHASED TRUCK.PREVIOUS CAR 2000 BUICK LESABRE HAD SAME ISSUE COST ABOUT $500.00 TO REPAIR,ALSO HAVE A 1996 CHEVY VAN THAT DOES THE SAME THING GM CAN NOT TELL ME THAT THEY ARE UNAWARE OF THIS ISSUE,THIS IS A SAFETY ISSUE WHEN YOU…
Read full complaint
RAN OUT OF FUEL ON HIGHWAY,FUEL GAUGE ALL OF A SUDDEN DROP TO EMPTY TRUCK STALLED OUT,JUST RECENTLY PURCHASED TRUCK.PREVIOUS CAR 2000 BUICK LESABRE HAD SAME ISSUE COST ABOUT $500.00 TO REPAIR,ALSO HAVE A 1996 CHEVY VAN THAT DOES THE SAME THING GM CAN NOT TELL ME THAT THEY ARE UNAWARE OF THIS ISSUE,THIS IS A SAFETY ISSUE WHEN YOU RUN OUT OF FUEL AT HIGHWAY SPEEDS. *TR
WAS PULLING INTO GARAGE APPLIED BRAKES WAS RUNNING 4 MPH ANTI LOCK ACTIVATED PEDDLE WENT TO FLOOR HIT WORK BENCH KNOCKED WALL OUT OF BACK OF GARAGE & DAMAGE TRUCK $5000 TOTAL DAMAGE. FOUND OUT WHEEL SENSOR WAS BAD REPLACED NO MORE PROBLEMS. SEAMS LIKE SOMETHING THAT'S IS SUPPOSE TO HELP YOU STOP SHOULD NOT KEEP YOU FROM STOPPING…
Read full complaint
WAS PULLING INTO GARAGE APPLIED BRAKES WAS RUNNING 4 MPH ANTI LOCK ACTIVATED PEDDLE WENT TO FLOOR HIT WORK BENCH KNOCKED WALL OUT OF BACK OF GARAGE & DAMAGE TRUCK $5000 TOTAL DAMAGE. FOUND OUT WHEEL SENSOR WAS BAD REPLACED NO MORE PROBLEMS. SEAMS LIKE SOMETHING THAT'S IS SUPPOSE TO HELP YOU STOP SHOULD NOT KEEP YOU FROM STOPPING IF IT GOES BAD CRAPPY FAIL SAFE. *TR
MY WIFE WAS DRIVING THE VEHICLE AND WHEN SHE WENT TO STOP, THE BRAKE PEDAL WENT COMPLETELY TO THE FLOOR WITH VIRTUALLY NO STOPPING ABILITY. SHE WAS ABLE TO GET THE TRUCK TO A PARKING LOT SAFELY. WHEN I ARRIVED TO INSPECT THE VEHICLE THERE WAS A HUGE PUDDLE OF BRAKE FLUID UNDER THE TRUCK AT THE AREA UNDER THE DRIVERS FEET. UPON I…
Read full complaint
MY WIFE WAS DRIVING THE VEHICLE AND WHEN SHE WENT TO STOP, THE BRAKE PEDAL WENT COMPLETELY TO THE FLOOR WITH VIRTUALLY NO STOPPING ABILITY. SHE WAS ABLE TO GET THE TRUCK TO A PARKING LOT SAFELY. WHEN I ARRIVED TO INSPECT THE VEHICLE THERE WAS A HUGE PUDDLE OF BRAKE FLUID UNDER THE TRUCK AT THE AREA UNDER THE DRIVERS FEET. UPON INSPECTING THE FAILURE I NOTICED THAT ALL OF THE STEEL BRAKE LINES AT THE POINT WHERE THE CROSS THE FRAME TO THE ABS CONTROL MODULE WERE MASSIVELY RUSTED TO THE POINT WHERE THE FLUID WAS PURGING OUT OF AT LEAST ONE OF THE LINES. UPON TESTING THE BRAKES MYSELF THERE WAS ABSOLUTELY NO STOPPING ABILITY DUE TO COMPLETE LOSS OF ALL BRAKE FLUID AND AIR THAT HAD NOW ENTERED THE SYSTEM. AFTER REVIEWING THIS ISSUE ON THE INTERNET I REALIZED THAT I AM NOT THE ONLY GM OWNER HAVING THIS EXACT SAME ISSUE. LUCKILY, IT DID NOT RESULT IN A CRASH AND INJURIES OR DEATH. HAD THIS HAPPENED 2 WEEKS EARLIER WHILE IS WAS TOWING MY 30 FOOT JAYCO CAMPER, THE OUTCOME WOULD HAVE HAD AN ENTIRELY DIFFERENT OUTCOME. SOMETHING NEEDS TO BE DONE TO RECALL THESE VEHICLES BEFORE SOMEONE GETS KILLED. THERE ALSO NEEDS TO BE REIMBURSEMENT FOR THE THOUSANDS OF DOLLARS THAT IT IS GOING TO COST TO HAVE THIS FIXED. IN THIRTY YEARS OF DRIVING, I HAVE OWNED ONLY CHEVROLET'S. THIS WILL PROBABLY CHANGE IN A YEAR OR TWO WHEN I REPLACE THIS VEHICLE AND PROBABLY GO TO A FOREIGN MANUFACTURER, MAY LIFE MAY DEPEND ON IT! TO REITERATE, THE BRAKES LINES ARE RUSTING ALONG THE FRAME RAIL UNDER THE AREA OF THE DRIVER'S FEET TO THE POINT WHERE THEY FAIL AND ALL OF THE BRAKE FLUID IS PURGED. THERE HAD BEEN ABSOLUTELY NO INDICATION (IE: SEEPING, LEAKING, OR DRIPPING) PRIOR TO THE COMPLETE AND RATHER INSTANT FAILURE. I HAVE TAKEN DIGITAL PICTURES FOR FUTURE PROOF.
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.