NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
614 reports106,000 miles · Oct 17, 2008
Service Brakes, HydraulicCrashInjury
DRIVING AT 35 MPH I WENT TO STOP FOR A TURNING CAR. THE BRAKE PEDAL WENT TO THE FLOOR AND THE TRUCK WOULD NOT STOP. TO AVOID AN HITTING THE CAR IN FRONT OF ME, I VEERED TO THE RIGHT AND WENT INTO A DITCH. AFTER INSPECTION OF THE VEHICLE IT WAS NOTED THAT EVERY ONE OF THE BRAKE LINES (SHAPED AS A HOOK) THAT ARE NEAR THE ABS BO…
Read full complaint
DRIVING AT 35 MPH I WENT TO STOP FOR A TURNING CAR. THE BRAKE PEDAL WENT TO THE FLOOR AND THE TRUCK WOULD NOT STOP. TO AVOID AN HITTING THE CAR IN FRONT OF ME, I VEERED TO THE RIGHT AND WENT INTO A DITCH. AFTER INSPECTION OF THE VEHICLE IT WAS NOTED THAT EVERY ONE OF THE BRAKE LINES (SHAPED AS A HOOK) THAT ARE NEAR THE ABS BOX WERE ABNORMALLY CORRODED AND RUSTED THROUGH EVEN THOUGH THEY ARE SUPPOSED TO BE MADE FROM STAINLESS STEEL. BRAKE FLUID GUSHED OUT WHEN THE BRAKES WERE APPLIED. THIS VEHICLE IS STORED DURING WINTER MONTHS (NOV.-APR) SALT AND SNOW ARE NOT ISSUES. I HAVE A 2001 GMC 4X4 AND INSPECTED THE BRAKE LINES AFTER THE ACCIDENT WITH THE SILVERADO. THOSE BRAKE LINES LOOK FINE.*TR
NHTSA ODI #10245838
110,000 miles · Oct 16, 2008
Fuel System, Gasoline
THE FUEL TANK FILL NECK IS LACKING THE PROPER RUST INHIBITING COATINGS THIS THEN IS CAUSING THE METAL NECK WHERE THE FILL NOZZLE ENTERS TO RUST OUT.. THIS CAUSES GAS VAPORS TO ESCAPE THE FUEL TANK. ALSO THE GROUND STRAP IS OF POOR CONSTRUCTION. THIS THEN CORRODES INTO DUST... THESE FACTS WILL ON AN UNSUSPECTING V…
Read full complaint
THE FUEL TANK FILL NECK IS LACKING THE PROPER RUST INHIBITING COATINGS THIS THEN IS CAUSING THE METAL NECK WHERE THE FILL NOZZLE ENTERS TO RUST OUT.. THIS CAUSES GAS VAPORS TO ESCAPE THE FUEL TANK. ALSO THE GROUND STRAP IS OF POOR CONSTRUCTION. THIS THEN CORRODES INTO DUST... THESE FACTS WILL ON AN UNSUSPECTING VEHICLE OWNER CAUSE A POTENTIAL EXPLOSION/FIRE WHEN REFUELING... *TR
NHTSA ODI #10245668
66,300 miles · Oct 9, 2008
Service Brakes, HydraulicCrash
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING AT LOW SPEEDS AND THEN DEPRESSING THE BRAKE PEDAL, THE PEDAL VIBRATES AND PUSHES BACK ON THE CONTACT'S FOOT. HE FURTHER STATED THAT THE PEDAL EXTENDED TO THE FLOOR WHEN THE BRAKE PEDAL WAS DEPRESSED, BUT THE VEHICLE DID NOT SLOW DOWN OR STOP. THE CONTACT CONTI…
Read full complaint
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING AT LOW SPEEDS AND THEN DEPRESSING THE BRAKE PEDAL, THE PEDAL VIBRATES AND PUSHES BACK ON THE CONTACT'S FOOT. HE FURTHER STATED THAT THE PEDAL EXTENDED TO THE FLOOR WHEN THE BRAKE PEDAL WAS DEPRESSED, BUT THE VEHICLE DID NOT SLOW DOWN OR STOP. THE CONTACT CONTINUED TO APPLY PRESSURE TO THE BRAKE PEDAL, BUT NOTHING HAPPENED. THE CONTACT HAD TO CRASH INTO A PILE OF COD TO STOP THE VEHICLE. THE CURRENT MILEAGE WAS 77,100 AND FAILURE MILEAGE WAS 66,300.
NHTSA ODI #10244958
75,000 miles · Oct 3, 2008
Engine And Engine Cooling
2000 CHEVY SILVERADO, 5.3 LITE Z71. COLD ENGINE KNOCK. *TR
NHTSA ODI #10244303
72,000 miles · Sep 22, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING 60 MPH AND APPLYING THE BRAKES, THE ABS WOULD ENGAGE AND CAUSE THE VEHICLE TO SKID ON DRY ROAD CONDITIONS. THE BRAKE SHOES AND ROTORS WERE REPLACED BY THE DEALER, BUT THE FAILURE RECURRED. THE FAILURE MILEAGE WAS 72,000 AND CURRENT MILEAGE WAS 76,500.
NHTSA ODI #10243079
110,000 miles · Sep 17, 2008
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. ON SEPTEMBER 3, 2008, THE CONTACT NOTICED THAT HIS VEHICLE WAS LEAKING ANTIFREEZE. HE TOOK THE VEHICLE TO A LOCAL REPAIR SHOP AND WAS INFORMED THAT THE LEAK ORIGINATED FROM THE INTAKE MANIFOLD GASKET, WHICH WAS DEFECTIVE. THE MECHANIC ADVISED HIM TO RESEARCH TO SEE IF THERE…
Read full complaint
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. ON SEPTEMBER 3, 2008, THE CONTACT NOTICED THAT HIS VEHICLE WAS LEAKING ANTIFREEZE. HE TOOK THE VEHICLE TO A LOCAL REPAIR SHOP AND WAS INFORMED THAT THE LEAK ORIGINATED FROM THE INTAKE MANIFOLD GASKET, WHICH WAS DEFECTIVE. THE MECHANIC ADVISED HIM TO RESEARCH TO SEE IF THERE WAS A RECALL FOR THIS FAILURE BEFORE HAVING THE VEHICLE REPAIRED. THE VEHICLE HAS NOT YET BEEN REPAIRED AND THE MANUFACTURER HAS NOT BEEN NOTIFIED. THE CURRENT MILEAGE WAS 110,200 AND FAILURE MILEAGE WAS 110,000.
NHTSA ODI #10242721
162,000 miles · Sep 9, 2008
Air BagsService Brakes, HydraulicCrash
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 35 MPH AND APPROACHING A STOP LIGHT, THE VEHICLE DID NOT STOP WHEN THE BRAKE PEDAL WAS DEPRESSED. AS A RESULT, HE REAR ENDED ANOTHER VEHICLE. THE AIR BAGS FAILED TO DEPLOY. A POLICE REPORT WAS FILED. THE DEALER DIAGNOSED THE VEHICLE AS HAVING A…
Read full complaint
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 35 MPH AND APPROACHING A STOP LIGHT, THE VEHICLE DID NOT STOP WHEN THE BRAKE PEDAL WAS DEPRESSED. AS A RESULT, HE REAR ENDED ANOTHER VEHICLE. THE AIR BAGS FAILED TO DEPLOY. A POLICE REPORT WAS FILED. THE DEALER DIAGNOSED THE VEHICLE AS HAVING A ROTTEN AND CORRODED BRAKE LINE. THE CURRENT AND FAILURE MILEAGES WERE 162,000.
NHTSA ODI #10241456
Mileage unknown · Sep 8, 2008
Fuel System, Gasoline
2000 CHEVY SILVERADO1500 V6 STALLS WHEN DRIVING. NO CHECK ENGINE LIGHT TO INDICATE ANY ISSUES WITH ENGINE. DEALER REPLACED CATALYTIC CONVERTER BUT CANNOT OFFER ANY REASON AS TO WHY THIS OCCURS. I HAVE REPLACED THE SPARK PLUGS, DISTRIBUTOR AND ROTOR BUTTON. THIS HAPPENS SPORADICALLY AND CAN NOT BE TRACED TO ANY ONE SOURCE BY ME.…
Read full complaint
2000 CHEVY SILVERADO1500 V6 STALLS WHEN DRIVING. NO CHECK ENGINE LIGHT TO INDICATE ANY ISSUES WITH ENGINE. DEALER REPLACED CATALYTIC CONVERTER BUT CANNOT OFFER ANY REASON AS TO WHY THIS OCCURS. I HAVE REPLACED THE SPARK PLUGS, DISTRIBUTOR AND ROTOR BUTTON. THIS HAPPENS SPORADICALLY AND CAN NOT BE TRACED TO ANY ONE SOURCE BY ME. I HAVE NOTICED THAT THE LAST COUPLE OF TIMES IT WAS RAINING. THIS HAS BEEN ON GOING FOR ABOUT 4 MONTHS. WHEN THIS HAPPENS I LOSE THE ABILITY TO USE THE BRAKES AND IS VERY HARD TO CONTROL.*TR
NHTSA ODI #10241344
162,000 miles · Aug 25, 2008
Service Brakes, HydraulicCrash
ON THIS DATE I WAS OUT SHOPPING ,WHEN I APPROACHED A REDLIGHT. I APPLIED THE BRAKE AND FELT NO RESPONSE. APPLIED MORE PRESSURE AND FELT ABS PULSE ABOUT 4 TIMES. THEN THE PEDAL WENT TO THE FLOOR. I HIT A HONDA ODYSSEY IN THE REAR,THAT CONTAINED 3 SMALL CHILDREN AND THEIR FATHER. LUCKILY, NO INJURIES. LOOKS LIKE A BRAKE LINE FAILE…
Read full complaint
ON THIS DATE I WAS OUT SHOPPING ,WHEN I APPROACHED A REDLIGHT. I APPLIED THE BRAKE AND FELT NO RESPONSE. APPLIED MORE PRESSURE AND FELT ABS PULSE ABOUT 4 TIMES. THEN THE PEDAL WENT TO THE FLOOR. I HIT A HONDA ODYSSEY IN THE REAR,THAT CONTAINED 3 SMALL CHILDREN AND THEIR FATHER. LUCKILY, NO INJURIES. LOOKS LIKE A BRAKE LINE FAILED, WHY?????????? THE STATE OF RI IMPOUNDED THE TRUCK FOR AN INVESTIGATION,THE RESULTS OF WHICH I COULD HAVE WRITTEN AT THE SCENE OF THE ACCIDENT. THEY ONLY STATE THE OBVIOUS. THEY HAVE ALSO SEIZED THE PLATED AND SUSPENDED THE REG. UNTIL ALL REPAIRS ARE MADE AND CERTIFIED . AGAIN I ASK WHY WOULD A BRAKE LINE FAIL ON AN 8 MODEL YEAR OLD VECH. THIS IS VERY DISTURBING TO ME. *TR
NHTSA ODI #10239627
40,000 miles · Jul 25, 2008
Parking Brake
2000 CHEVY SILVERADO. THE PARKING BRAKE HAS HAD PREMATURE WEAR ON LEFT SIDE CAUSING METAL TO METAL CONTACT WITH THE SHOE AND THE ROTOR. HAPPENED AT 40,000 AND 85,000 MILES. REPLACED ROTOR AND BRAKES BOTH TIMES. RECALL #05V161000 ADDRESSES THIS PROBLEM IN TRUCKS WITH MANUAL TRANSMISSIONS ONLY. WORN EMERGENCY BRAKE REDUCES BRAKE H…
Read full complaint
2000 CHEVY SILVERADO. THE PARKING BRAKE HAS HAD PREMATURE WEAR ON LEFT SIDE CAUSING METAL TO METAL CONTACT WITH THE SHOE AND THE ROTOR. HAPPENED AT 40,000 AND 85,000 MILES. REPLACED ROTOR AND BRAKES BOTH TIMES. RECALL #05V161000 ADDRESSES THIS PROBLEM IN TRUCKS WITH MANUAL TRANSMISSIONS ONLY. WORN EMERGENCY BRAKE REDUCES BRAKE HOLDING POWER AND CAUSES EXPENSIVE PREMATURE EXPENSE. *TR
NHTSA ODI #10235715
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.
Illustration