IllustrationTL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO K 1500. THE CONTACT WAS DRIVING 5 MPH WHEN THE BRAKE LINE FAILED. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURER WAS CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGES WERE 81,220.
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 reportsI BELIEVE MY VEHICLE HAS SUFFERED SAME EXACT PROBLEMS OUTLINED IN NHTSA ACTION NUMBER: PE05020 AND RECALL CAMPAIGN NUMBER: 05V379000. WHEN TRYING TO STOP IN PARKING LOT OR PARKING GARAGE THE ABS WOULD ACTIVATE AT VERY LOW SPEEDS AND MY VEHICLE WOULD NOT STOP. I WOULD RUN INTO CEMENT WHILE CHOCKS OR BLOCKS THAT ARE DESIGNED TO …
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I BELIEVE MY VEHICLE HAS SUFFERED SAME EXACT PROBLEMS OUTLINED IN NHTSA ACTION NUMBER: PE05020 AND RECALL CAMPAIGN NUMBER: 05V379000. WHEN TRYING TO STOP IN PARKING LOT OR PARKING GARAGE THE ABS WOULD ACTIVATE AT VERY LOW SPEEDS AND MY VEHICLE WOULD NOT STOP. I WOULD RUN INTO CEMENT WHILE CHOCKS OR BLOCKS THAT ARE DESIGNED TO STOP A CAR IN PARKING LOTS. THIS HAS HAPPENED 5-10 TIMES IN MY VEHICLE. IT HAS NOT HAPPENED IN THE PAST YEAR BUT I BELIEVE THIS IS BECAUSE THE ABS HAS BEEN DEACTIVATED BY VEHICLE. LAST MONTH I HAD TO SLAM ON BRAKES AND THEY LOCKED UP AND MY TRUCK SKIDDED OUT OF CONTROL, HAD TO RELEASE BRAKES TO REGAIN CONTROL. LUCKILY NO ACCIDENTS YET. *TR
MY DRIVERS SIDE HUB WENT OUT ABOUT 120,000 MILES. REPLACED IT, WENT OUT LESS THAN OVER YEAR LATER, THEN AGAIN LESS THAN 6 MONTHS LATER . TAILGATE LATCH BROKE BEFORE THEN, ABOUT ONE YEAR LATER, FUEL PUMP WENT OUT. FRONT RUNNING LIGHTS ALWAYS SEEM TO HAVE A LIGHT OUT. 2009 RACK AND PINION WENT OUT, REPLACED IT, THEN ONE YEAR LATE…
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MY DRIVERS SIDE HUB WENT OUT ABOUT 120,000 MILES. REPLACED IT, WENT OUT LESS THAN OVER YEAR LATER, THEN AGAIN LESS THAN 6 MONTHS LATER . TAILGATE LATCH BROKE BEFORE THEN, ABOUT ONE YEAR LATER, FUEL PUMP WENT OUT. FRONT RUNNING LIGHTS ALWAYS SEEM TO HAVE A LIGHT OUT. 2009 RACK AND PINION WENT OUT, REPLACED IT, THEN ONE YEAR LATER WENT OUT AGAIN.U JOINT WENT OUT ABOUT SAME TIME. AND IGNITION STUCK AND COULDN'T TAKE OUT OF GEAR OR TURN OFF. FUEL LINE UNCLIPPED AND DUMPED ALL MY GAS,2010 TRANSMISSION WENT OUT. NOW MY PASSENGER SIDE HUB ASSEMBLY HAS GONE OUT FOR FIRST TIME WITH ABS LIGHT ON AND WHEEL CLANKING AND SEPARATING. RACK AND PINION BLOWN ALSO. REPAIRS NOT CHEAP, AND ALWAYS HAPPENS AT FINANCIALLY BAD TIME. SO NOW IT SITS IN DRIVEWAY BROKE DOWN AND I'M TRYING TO FIND A HUB FOR CHEAP SO I CAN GET AROUND AGAIN TO WORK ETC. SEEMS LIKE EVERYTIME I FIX SOMETHING ANOTHER PART GOES OUT. NEVER HEARD ABOUT ANY RECALL PROBLEMS TILL NOW, AND WOULD LIKE TO KNOW ABOUT ANY OPTIONS OF GETTING REPAIR. ITS COSTING ME WEEKS OF OFF TIME FROM WORK. AND BILLS PILING UP, RENT PAST DUE, NO MONEY TO REPAIR, AND AFFECTING MY COULD'VE LIFE. ANY HELP APPRECIATED. I LIKE CHEVY, BUY JUST FEEL LIKE MINE SEEMS TO HAVE ALLOT OF PROBLEMS THAT HAS BEEN DESCRIBED IN YOUR PAGE I READ. IN FACT HAD EVERY PROBLEM LISTED PLUS .PLEASE HELP IF YOU CAN. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
EXHAUST MANIFOLD BOLTS BREAKING OFF LEAVING STUDS IN THE HEADS GM IS NOT STANDING BEHIND THIS ISSUE. THIS IS CAUSING CO RELEASE, HIGH HEAT IN THE ENGINE COMPARTMENT, NOISE, AND AN EXPENSE THAT I SHOULD NOT PAY FOR. SOME STATES ARE NOT ACCEPTING THESE VEHICLES NOW FOR NOT MEETING THE EMISSION STANDARDS PLEASE LOOK IN TO THIS. …
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EXHAUST MANIFOLD BOLTS BREAKING OFF LEAVING STUDS IN THE HEADS GM IS NOT STANDING BEHIND THIS ISSUE. THIS IS CAUSING CO RELEASE, HIGH HEAT IN THE ENGINE COMPARTMENT, NOISE, AND AN EXPENSE THAT I SHOULD NOT PAY FOR. SOME STATES ARE NOT ACCEPTING THESE VEHICLES NOW FOR NOT MEETING THE EMISSION STANDARDS PLEASE LOOK IN TO THIS. IT IS A SAFETY HAZARD. *TR
WHILE IN MOTION, A COMPONENT IN THE DIFFERENTIAL FAILED, CREATING AN INTERFERENCE CONDITION LOCKING UP MY REAR END. LUCKILY I WAS NOT TRAVELING AT HIGHWAY SPEEDS, AND WAS JUST AROUND TOWN, TRAVELING AT ABOUT 30 MPH. THERE WAS NO WARNING OF PARTS FAILING. THERE WAS AMPLE GEAR OIL IN THE REAR END, AND MAINTENANCE WAS NOT A FACTOR …
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WHILE IN MOTION, A COMPONENT IN THE DIFFERENTIAL FAILED, CREATING AN INTERFERENCE CONDITION LOCKING UP MY REAR END. LUCKILY I WAS NOT TRAVELING AT HIGHWAY SPEEDS, AND WAS JUST AROUND TOWN, TRAVELING AT ABOUT 30 MPH. THERE WAS NO WARNING OF PARTS FAILING. THERE WAS AMPLE GEAR OIL IN THE REAR END, AND MAINTENANCE WAS NOT A FACTOR AS I DID A GEAR OIL CHANGE THIS PAST SUMMER. I SELDOM USE THIS VEHICLE TO TOW AND IT HAS NEVER SEEN A PLOW OR OVERLY ROUGH DRIVING CONDITIONS. *KB
FUEL GAUGE GOES EMPTYTO FULL CONSTANTLY. DEALER SAYS IT WILL COST 8 TO 900.00 DOLLARS TO FIX. IF I AM MISKAKEN THIS PART OF FUEL PUMP ASSY. *TR
I PURCHASED MY VEHICLE IN MARCH OF 2011 AND SINCE HAVE NOTICED A SIGNIFICANT AMOUNT OF RUST ON ALL THE BRAKE LINES GOING AND COMING FROM THE ABS MODULE UNDER THE DRIVER'S SIDE FRAME RAIL. I HAVE READ MANY CASES OF OWNERS THAT HAVE HAD THEIR LINES BURST IN AS LITTLE AS 2 YEARS AFTER PURCHASE FROM THE DEALERSHIP. I AM VERY CONCER…
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I PURCHASED MY VEHICLE IN MARCH OF 2011 AND SINCE HAVE NOTICED A SIGNIFICANT AMOUNT OF RUST ON ALL THE BRAKE LINES GOING AND COMING FROM THE ABS MODULE UNDER THE DRIVER'S SIDE FRAME RAIL. I HAVE READ MANY CASES OF OWNERS THAT HAVE HAD THEIR LINES BURST IN AS LITTLE AS 2 YEARS AFTER PURCHASE FROM THE DEALERSHIP. I AM VERY CONCERNED ABOUT THE SAFETY OF OPERATION OF MY TRUCK WITH THE BRAKE LINES CORRODED TO THE EXTENT THAT THEY ARE AND HOPE THAT GENERAL MOTORS WILL DO THE RIGHT THING AND FIX THIS SAFETY HAZARD. THERE IS ALSO A SIGNIFICANT AMOUNT OF RUST ON THE ENTIRE UNDERSIDE OF THE VEHICLE (FRAME RAILS, BOLT LOCATIONS, WELD LOCATIONS, UNDERSIDE OF BUMPERS, ECT). *TR
RUSTING FUEL LINE CAUSED A SIGNIFICANT FUEL LEAK IN THE REAR OF THE VEHICLE NEAR THE FUEL TANK, WHILE REPAIRING THAT LINE I OBSERVED SEVERAL OTHER RUSTING LINES IN THAT AREA BRAKE, AND MORE FUEL LINES. *TR
MY BRAKE LINES ARE CORRODED AND THIS IS A KNOWN ISSUE. I FEAR THIS IS A SAFETY ISSUE AND SHOULD BE RECALLED BY GM. *TR
WHILE PULLING INTO MY PARKING AREA AND BRAKING, THE BREAK PEDAL WENT TO THE FLOOR. A HISSING SOUND WAS HEARD WHILE THE PEDAL WAS BEING PUSHED. UPON INSPECTION A BREAK IN THE BRAKELINE UNDER THE DRIVER'S SIDE CAB WAS IDENTIFIED AT THE HANGER. BASED UPON VISUAL INSPECTION THEIR APPEARS TO BE CORROSION AROUND THE BREAK IN THE LIN…
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WHILE PULLING INTO MY PARKING AREA AND BRAKING, THE BREAK PEDAL WENT TO THE FLOOR. A HISSING SOUND WAS HEARD WHILE THE PEDAL WAS BEING PUSHED. UPON INSPECTION A BREAK IN THE BRAKELINE UNDER THE DRIVER'S SIDE CAB WAS IDENTIFIED AT THE HANGER. BASED UPON VISUAL INSPECTION THEIR APPEARS TO BE CORROSION AROUND THE BREAK IN THE LINE. *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.