NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
587 reports220,800 miles · Nov 5, 2014
Service BrakesStructure
I HAVE A 1999 SILVERADO 1500 I HAD THE BRAKE LINES REPLACED IN JULY 2014 BECAUSE OF CORROSION. THEN YESTERDAY NOVEMBER 4TH 2014 I HAD THE TRUCK TO A SHOP GETTING TIRES PUT ON AND WHEN THEY STARTED TO LIFT IT THE REAR END STARTED TO SAG. THEY LET IT DOWN AND NOTICED RUST HOLES IN THE FRAME. THIS TRUCK IS NOT SAFE TO DRIVE AND GM …
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I HAVE A 1999 SILVERADO 1500 I HAD THE BRAKE LINES REPLACED IN JULY 2014 BECAUSE OF CORROSION. THEN YESTERDAY NOVEMBER 4TH 2014 I HAD THE TRUCK TO A SHOP GETTING TIRES PUT ON AND WHEN THEY STARTED TO LIFT IT THE REAR END STARTED TO SAG. THEY LET IT DOWN AND NOTICED RUST HOLES IN THE FRAME. THIS TRUCK IS NOT SAFE TO DRIVE AND GM NEEDS TO POST A RECALL ON THESE PROBLEMS! *TR
NHTSA ODI #10652654
115,000 miles · Oct 29, 2014
Structure
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE INSPECTING THE VEHICLE, IT WAS DISCOVERED THAT THE FRAME WAS RUSTED TO THE POINT OF CORROSION AND COULD POTENTIALLY FRACTURE. THE CONTACT ALSO STATED THAT THE UNDERCARRIAGE AND THE FRAME RUSTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE INSPECTING THE VEHICLE, IT WAS DISCOVERED THAT THE FRAME WAS RUSTED TO THE POINT OF CORROSION AND COULD POTENTIALLY FRACTURE. THE CONTACT ALSO STATED THAT THE UNDERCARRIAGE AND THE FRAME RUSTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 115,000. UPDATED 12/9/14*CN UPDATED THE CONSUMER STATED THE FRAME WOULD HAVE TO BE REPLACED. THE INSURANCE COMPANY DEEMED THE REPAIR A MANUFACTURER'S DEFECT THEREFORE, WOULD NOT COVER THERE REPAIR COST. THE REPAIR COSTS ABOUT THE SAME AMOUNT AS THE VEHICLE. UPDATED 06/1/2015 *JS
NHTSA ODI #10651075
121,000 miles · Oct 27, 2014
Service Brakes
MY WIFE DROVE THE TRUCK TO WINCHESTER, VA. AND THE BRAKES WORKED OK. WHEN SHE WAS RETURNING HOME SHE NOTICED THE BRAKE PEDAL WAS ?SOFT? AND THE BRAKES HAD TO BE PUMPED TO STOP. UPON RETURNING HOME I NOTICED THE BRAKE FLUID RESERVOIR WAS EMPTY. I FILLED THE RESERVOIR AND TOOK THE TRUCK TO A LOCAL GARAGE IN CAPON BRIDGE, WV. I IN…
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MY WIFE DROVE THE TRUCK TO WINCHESTER, VA. AND THE BRAKES WORKED OK. WHEN SHE WAS RETURNING HOME SHE NOTICED THE BRAKE PEDAL WAS ?SOFT? AND THE BRAKES HAD TO BE PUMPED TO STOP. UPON RETURNING HOME I NOTICED THE BRAKE FLUID RESERVOIR WAS EMPTY. I FILLED THE RESERVOIR AND TOOK THE TRUCK TO A LOCAL GARAGE IN CAPON BRIDGE, WV. I INSPECTED THE RESERVOIR AFTER I GOT TO THE GARAGE AND IT WAS AGAIN EMPTY. THE MECHANIC REPLACED A LENGTH OF TUBING FROM BENEATH THE LEFT DRIVER'S DOOR TO THE ENGINE COMPARTMENT AT A COST OF $262.00. *TR
NHTSA ODI #10650490
80,000 miles · Oct 24, 2014
Service Brakes
VEHICLE BRAKE LINES FOUND TO BE SEVERELY CORRODED. BRAKE LINE MATERIAL IS NOT SUITABLE FOR SERVICE IN NORMAL CONDITIONS AND IN MY CASE THE FRAME AND OTHER UNDERCARRIAGE DO NOT EXHIBIT SIMILAR CORROSION. INVESTIGATION OF THE LINES FOUND CORROSION THROUGHOUT THE BRAKE SYSTEM, PARTICULARLY AROUND THE ABS CONTROLLER, LOCATED AT THE …
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VEHICLE BRAKE LINES FOUND TO BE SEVERELY CORRODED. BRAKE LINE MATERIAL IS NOT SUITABLE FOR SERVICE IN NORMAL CONDITIONS AND IN MY CASE THE FRAME AND OTHER UNDERCARRIAGE DO NOT EXHIBIT SIMILAR CORROSION. INVESTIGATION OF THE LINES FOUND CORROSION THROUGHOUT THE BRAKE SYSTEM, PARTICULARLY AROUND THE ABS CONTROLLER, LOCATED AT THE MIDPOINT OF THE VEHICLE ON THE DRIVERS SIDE INSIDE FRAME RAIL. IN TALKING WITH FRIENDS/CO-WORKERS I LEARNED OF TWO INCIDENTS, ONE WITH A 2002 SILVERADO 2500 HAVING A SIMILAR FAILURE WHERE THE LINE FAILED AT STOP WHILE THE LINE WAS UNDER PRESSURE. ANOTHER FRIEND HAD A FAILURE IN HIS 2001 SILVERADO 1500 WHILE APPLYING BRAKES TO STOP A THE BOTTOM OF A HILL. THE BRAKES FAILED DUE TO A RUPTURED LINE AND THE OWNER WAS ABLE TO GEAR DOWN, ROLL THROUGH THE STOP SIGN AND TURN ONTO A SIDE ROAD. A HIGHER PROFILE INCIDENT INVOLVED A CO-WORKER WITH A 2001 SILVERADO 2500 PULLING A TRAVEL TRAILER. WHILE COMING TO A STOP, THE BRAKE LINE RUPTURED AND THE VEHICLE RAN THE RED LIGHT. THE OWNER WAS ABLE TO STOP THE VEHICLE USING THE TRAVEL TRAILER ELECTRIC BRAKES. I WORK AT A LARGE CHEMICAL COMPANY HEADQUARTERED IN KINGSPORT, TN. THIS INCIDENT WAS THE SUBJECT OF A SAFETY NEWSLETTER THAT IS CIRCULATED AT THE KINGSPORT SITE IN 2013. SEARCHES OF INTERNET FORUMS FIND MULTIPLE SIMILAR INCIDENTS DUE TO BRAKE LINE RUPTURE SOME INVOLVING INJURY. *TR
NHTSA ODI #10649556
180,000 miles · Oct 22, 2014
Service Brakes
I WAS TURNING A CORNER A SHORT WAY FROM MY HOUSE. MY BRAKE PEDAL SUDDENLY WENT TO THE FLOOR. I TRIED PUMPING THE BRAKES AND GOT ALMOST NO STOPPING POWER. LUCKILY, I WAS ABLE TO COAST UP INTO MY YARD. I LOOKED UNDER THE TRUCK AND THEIR WAS BRAKE FLUID ALL OVER THE FRAME RAIL AND THE BUNDLE OF LINES. ONE OR MORE HAD RUSTED THROUGH…
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I WAS TURNING A CORNER A SHORT WAY FROM MY HOUSE. MY BRAKE PEDAL SUDDENLY WENT TO THE FLOOR. I TRIED PUMPING THE BRAKES AND GOT ALMOST NO STOPPING POWER. LUCKILY, I WAS ABLE TO COAST UP INTO MY YARD. I LOOKED UNDER THE TRUCK AND THEIR WAS BRAKE FLUID ALL OVER THE FRAME RAIL AND THE BUNDLE OF LINES. ONE OR MORE HAD RUSTED THROUGH. IF I WAS IN TRAFFIC, THIS WOULD HAVE BEEN A VERY SERIOUS SITUATION! *TR
NHTSA ODI #10649253
18,000 miles · Oct 21, 2014
Service Brakes, Hydraulic
WHEN MERGING INTO HIGHWAY TRAFFIC, OFF RAMP, THERE WAS TOTAL BRAKE FAILURE. OTHER CARS WERE APPROACHING AND I COULD NOT BRING THE TRUCK TO A STOP. SO I DROVE ONTO THE SHOULDER OFF THE ROAD TO AVOID AN ACCIDENT. THE PROBLEM WAS INSTANTANEOUS WITH NO PRIOR WARNING. THIS IS THE SECOND TIME THIS HAS OCCURRED. THE PROBLEM WAS DUE TO …
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WHEN MERGING INTO HIGHWAY TRAFFIC, OFF RAMP, THERE WAS TOTAL BRAKE FAILURE. OTHER CARS WERE APPROACHING AND I COULD NOT BRING THE TRUCK TO A STOP. SO I DROVE ONTO THE SHOULDER OFF THE ROAD TO AVOID AN ACCIDENT. THE PROBLEM WAS INSTANTANEOUS WITH NO PRIOR WARNING. THIS IS THE SECOND TIME THIS HAS OCCURRED. THE PROBLEM WAS DUE TO CORROSIVE BRAKE LINES....UPDATED 10/22/14 *BF
NHTSA ODI #10650173
80,000 miles · Oct 20, 2014
Seats
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE LATCH FOR THE FRONT SEAT FAILED TO OPERATE CAUSING THE SEAT TO MOVE WHILE DRIVING. THE DEALER DIAGNOSED THAT THE TRACT NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE …
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE LATCH FOR THE FRONT SEAT FAILED TO OPERATE CAUSING THE SEAT TO MOVE WHILE DRIVING. THE DEALER DIAGNOSED THAT THE TRACT NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 80,000.
NHTSA ODI #10648870
135,000 miles · Oct 15, 2014
Service Brakes
WAS APPROACHING A STOP SIGN AT A BUSY INTERSECTION AND BRAKE PEDAL LOST PRESSURE FOLLOWED BY TOTAL BRAKE FAILURE. THANKFULLY NO ONE WAS STOPPED IN FRONT OF ME AND I SOMEHOW WAS ABLE TO MAKE IT ACROSS THE INTERSECTION WITHOUT GETTING HIT. AFTER COMING TO THIS SITE AND SEEING HUNDREDS OF RECORDED COMPLAINTS ABOUT THE EXACT SAME IS…
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WAS APPROACHING A STOP SIGN AT A BUSY INTERSECTION AND BRAKE PEDAL LOST PRESSURE FOLLOWED BY TOTAL BRAKE FAILURE. THANKFULLY NO ONE WAS STOPPED IN FRONT OF ME AND I SOMEHOW WAS ABLE TO MAKE IT ACROSS THE INTERSECTION WITHOUT GETTING HIT. AFTER COMING TO THIS SITE AND SEEING HUNDREDS OF RECORDED COMPLAINTS ABOUT THE EXACT SAME ISSUE, I'M EXTREMELY DISAPPOINTED THAT GM HAS NOT RECALLED THIS VEHICLE FOR FAULTY BRAKE LINES. *TR
NHTSA ODI #10644961
216,543 miles · Oct 6, 2014
Service Brakes
I WHILE DRIVING VEHICLE, IT LOST BRAKE PRESSURE CAUSING THE BRAKE PEDAL TO PUSH TO THE FLOOR, UPON EXAMINATION IT WAS DISCOVER THE BRAKE LINES THAT RUN FROM THE MASTER CYLINDER TO ABS MODULE WERE RUSTED OUT AND THE BRAKE LINES FROM THE ABS MODULE TO THE BRAKE CALIPERS WHERE RUSTED OUT AS WELL. THE BRAKE LINES HAD TO REPLACED. *…
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I WHILE DRIVING VEHICLE, IT LOST BRAKE PRESSURE CAUSING THE BRAKE PEDAL TO PUSH TO THE FLOOR, UPON EXAMINATION IT WAS DISCOVER THE BRAKE LINES THAT RUN FROM THE MASTER CYLINDER TO ABS MODULE WERE RUSTED OUT AND THE BRAKE LINES FROM THE ABS MODULE TO THE BRAKE CALIPERS WHERE RUSTED OUT AS WELL. THE BRAKE LINES HAD TO REPLACED. *TR
NHTSA ODI #10641871
285,000 miles · Oct 6, 2014
Service Brakes
AFTER STOPPING QUICKLY THE BROKE PEDAL WENT TO THE FLOOR AND NO LONGER HAD ANY RESISTANCE. THE BRAKING POWER WAS GREATLY REDUCED AND APPEARED THAT ONLY THE REAR BRAKES WERE FUNCTIONING. *TR
NHTSA ODI #10641594
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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