NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
614 reports145,000 miles · Aug 11, 2012
Power TrainService Brakes
HI I WAS HAULING DEBRIS FROM MY YARD AND TAKING TO LAND FILL.ABOUT 800 TO 900LBS TOTAL. STOPPED AT CONVENIENCE STORE FOR GAS AND FOOD. PULLING OUT OF PARKING LOT, BRAKES GAVE OUT, BRAKE PEDAL WENT TO THE FLOOR. NO WARNING LIGHTS. NO WARNING AT ALL...BARELY ANY BRAKES AT ALL. I WAS JUST ABOUT TO GET ON EXPRESSWAY?? WOW! THERE WOU…
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HI I WAS HAULING DEBRIS FROM MY YARD AND TAKING TO LAND FILL.ABOUT 800 TO 900LBS TOTAL. STOPPED AT CONVENIENCE STORE FOR GAS AND FOOD. PULLING OUT OF PARKING LOT, BRAKES GAVE OUT, BRAKE PEDAL WENT TO THE FLOOR. NO WARNING LIGHTS. NO WARNING AT ALL...BARELY ANY BRAKES AT ALL. I WAS JUST ABOUT TO GET ON EXPRESSWAY?? WOW! THERE WOULD HAVE BEEN NO STOPPING THIS THING IN AN EMERGENCY?? I SEE GM ALREADY KNOWS OF THIS FAILURE. I THINK A HEADS UP WOULD HAVE BEEN IN ORDER??? I'VE CALLED ALL THE PEOPLE I KNOW WITH SIMILAR VEHICLES. ONLY ONE PERSON WAS AWARE OF THE ISSUE AND HE HAS SPENT OVER A 1000.00 IN REPAIRS. REPLACED RUSTED BRAKE LINES. HE TOLD ME HE JUST REPLACED THE TRANSMISSION LINES ALSO. HAS ANYONE BEEN INJURED OR KILLED?? I CALLED THE DEALERSHIP, JERRY'S CHEVROLET FOR INFORMATION. I PURCHASED IT NEW. WAITING FOR SERVICE DEPARTMENT TO RETURN MY CALL. *TR
NHTSA ODI #10470230
125,500 miles · Aug 8, 2012
Service Brakes
BRAKE LINE LEADING TO THE REAR BRAKES FAILED DUE TO EXCESSIVE RUST. FAILURE OCCURED WITHOUT NOTICE. NO ACCIDENT RESULTED FROM FAILURE. INSPECTING THE REMAINING LINES REVEALED ALL WERE RUSTED TO THE POINT OF NEEDING REPLACED. *TR
NHTSA ODI #10469632
90,586 miles · Aug 5, 2012
Service Brakes
WHEN APPLYING THE BRAKES TO MAKE A TURN, THE BRAKE PEDAL SANK TO THE FLOOR. UNABLE TO SLOW DOWN, I PUMPED THE BRAKES WITH NO RESULT. I DOWN SHIFTED TO THIRD, THEN SECOND, TO FIRST AND MADE A TURN INTO AN UPHILL DRIVEWAY. UPON STOPPING, BRAKE FLUID LEAKED UNDER THE CAB. THE TRUCK WAS TOWED TO A REPAIR SHOP. THANK GOD NO ONE WA…
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WHEN APPLYING THE BRAKES TO MAKE A TURN, THE BRAKE PEDAL SANK TO THE FLOOR. UNABLE TO SLOW DOWN, I PUMPED THE BRAKES WITH NO RESULT. I DOWN SHIFTED TO THIRD, THEN SECOND, TO FIRST AND MADE A TURN INTO AN UPHILL DRIVEWAY. UPON STOPPING, BRAKE FLUID LEAKED UNDER THE CAB. THE TRUCK WAS TOWED TO A REPAIR SHOP. THANK GOD NO ONE WAS IN FRONT OF ME, AND I DID NOT CRASH! *TR
NHTSA ODI #10469264
180,000 miles · Aug 2, 2012
Service BrakesStructure
BOTH FRONT AND REAR BRAKES WENT AT THE SAME TIME RESULTING IN TOTAL LOSS OF BRAKES DUE TO RUSTED OUT BRAKE LINES. SEVERE CORROSION ON FRAME CROSS MEMBER. *TR
NHTSA ODI #10469037
7,000 miles · Jul 17, 2012
Service Brakes
I OWN A 2000 CHEVY SILVERADO EXT. CAB. I'M RETIRED AND DRIVE THE TRUCK ABOUT 1000 MILES A YEAR OR SO. IN JANUARY 2004 TO PASS THE NEW YORK STATE INSPECTION I NEEDED TO HAVE THE ENTIRE REAR AXLE BRAKE ASSEMBLY FROM THE AXLE BEARING'S OUT REPLACED. AT THE TIME I HAD BETWEEN 6000 AND 7000 MILES ON THE TRUCK. THE COST WAS ALMOST $80…
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I OWN A 2000 CHEVY SILVERADO EXT. CAB. I'M RETIRED AND DRIVE THE TRUCK ABOUT 1000 MILES A YEAR OR SO. IN JANUARY 2004 TO PASS THE NEW YORK STATE INSPECTION I NEEDED TO HAVE THE ENTIRE REAR AXLE BRAKE ASSEMBLY FROM THE AXLE BEARING'S OUT REPLACED. AT THE TIME I HAD BETWEEN 6000 AND 7000 MILES ON THE TRUCK. THE COST WAS ALMOST $800.00 NOW ON MAY 4 2012 WITH 23,400 MILES ON THE TRUCK, I NEEDED TO HAVE THE FRONT BRAKE ROTORS AND PADS REPLACED, COST APPROXIMATELY $400.00! I HAD BOTH REPAIRS DONE BY A QUALIFIED ACE MECHANIC, WHO ALSO IS A FRIEND OF THE FAMILY SO HE CAN BE TRUSTED! I ALSO WANT TO ADD THERE IS NOT A SPECK OF RUST ON ANY OF THE BODY PANELS, AND THE UNDER CARRIAGE IS RINSED FREQUENTLY. THIS TRUCK IS WELL TAKEN CARE OF. *TR
NHTSA ODI #10466324
150,000 miles · Jul 6, 2012
Service Brakes
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING 40 MPH AND APPLIED THE BRAKES WHEN THEY FAILED. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS AND THE CONTACT WAS INFORMED THAT ONE OF THE BRAKE LINES WAS FRACTURED AND THE OTHERS WERE CORRODED FROM RUST. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAIL…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING 40 MPH AND APPLIED THE BRAKES WHEN THEY FAILED. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS AND THE CONTACT WAS INFORMED THAT ONE OF THE BRAKE LINES WAS FRACTURED AND THE OTHERS WERE CORRODED FROM RUST. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 150,000.
NHTSA ODI #10464403
89,000 miles · Jul 1, 2012
Engine
EXHAUST MANIFOLD BOLTS BROKE OFF RESULTING IN PINGING NOISE. MY MECHANIC VERIFIED THE BROKEN BOLTS AND TOLD ME THIS COULD LEAD TO OTHER MORE SERIOUS PROBLEMS INCLUDING POSSIBLE FIRE. HE ALSO SUGGESTED I SHOULD CONTACT A GM DEALER TO SEE IF THERE WAS A RECALL FOR THIS PROBLEM. I HAVE BEEN DRIVING FOR MORE THAN 50 YEARS AND I H…
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EXHAUST MANIFOLD BOLTS BROKE OFF RESULTING IN PINGING NOISE. MY MECHANIC VERIFIED THE BROKEN BOLTS AND TOLD ME THIS COULD LEAD TO OTHER MORE SERIOUS PROBLEMS INCLUDING POSSIBLE FIRE. HE ALSO SUGGESTED I SHOULD CONTACT A GM DEALER TO SEE IF THERE WAS A RECALL FOR THIS PROBLEM. I HAVE BEEN DRIVING FOR MORE THAN 50 YEARS AND I HAVE NEVER HAD EXHAUST MANIFOLD BOLTS JUST BREAK OFF. *TR
NHTSA ODI #10463888
191,000 miles · Jun 30, 2012
Service BrakesCrashInjury
WHILE TRAVELING NORTH ON RTE 3 IN NH I WAS IN TRAFFIC AND A CONSTRUCTION AREA HAD SLOWED TRAVEL ALL THE CARS IN FRONT OF ME SLOWED DOWN AND AS I TRIED TO SLOW DOWN THE BRAKE PEDAL WENT TO THE FLOOR AND I HIT THE VEHICLE IN FRONT OF ME AND MY TRUCK WAS SPEWING BRAKE FLUID FROM UNDER THE DRIVERS DOOR. UPON EXAMINATION I CAN SEE AL…
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WHILE TRAVELING NORTH ON RTE 3 IN NH I WAS IN TRAFFIC AND A CONSTRUCTION AREA HAD SLOWED TRAVEL ALL THE CARS IN FRONT OF ME SLOWED DOWN AND AS I TRIED TO SLOW DOWN THE BRAKE PEDAL WENT TO THE FLOOR AND I HIT THE VEHICLE IN FRONT OF ME AND MY TRUCK WAS SPEWING BRAKE FLUID FROM UNDER THE DRIVERS DOOR. UPON EXAMINATION I CAN SEE ALL BRAKE LINES ARE SEVERELY CORRODED. THE MAN I HIT HAD A BACK INJURY THANK GOD I HAD MY SEATBELT ON! *TR
NHTSA ODI #10463650
62,345 miles · Jun 26, 2012
Service BrakesService Brakes, Hydraulic
THE BRAKE LINES OF THE CHEVY SILVERADO 1500 HAVE ALL RUSTED OUT. THE UNDERCARRIAGE AND BRAKE LINES HAVE CORRODED CAUSING BRAKE FAILURE. SOME OF THE LINES WERE REPLACED WITHIN A FEW YEARS. BRAKE CALIPERS AFFECTED AS WELL. *JB *JB
NHTSA ODI #10463198
90,000 miles · Jun 18, 2012
Service Brakes
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE ATTEMPTING TO SHIFT THE VEHICLE OUT OF PARK, HE APPLIED PRESSURE TO THE BRAKE PEDAL AND THE PEDAL DEPRESSED TO THE FLOOR. THE CONTACT INSPECTED THE VEHICLE AND NOTICED THAT THE BRAKE LINES WERE CORRODED. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR SH…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE ATTEMPTING TO SHIFT THE VEHICLE OUT OF PARK, HE APPLIED PRESSURE TO THE BRAKE PEDAL AND THE PEDAL DEPRESSED TO THE FLOOR. THE CONTACT INSPECTED THE VEHICLE AND NOTICED THAT THE BRAKE LINES WERE CORRODED. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR SHOP, WHO VERIFIED THE FAILURE AND STATED THAT ALL OF THE BRAKE LINES AND FUEL LINES NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND DID NOT OFFER ANY ASSISTANCE SINCE THE VEHICLE WAS NO LONGER UNDER WARRANTY. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT AVAILABLE. THE FAILURE AND CURRENT MILEAGES WERE 90,000.
NHTSA ODI #10462144
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.
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