NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
614 reports99,500 miles · Aug 30, 2009
Service Brakes, Hydraulic
2000 CHEVROLET SILVERADO W/ 99K MILES. THE BRAKES FAILED WHILE MY WIFE WAS DRIVING. I HAD THE TRUCK TOWED HOME. UPON VISUAL INSPECTION, I FOUND THAT THE REAR STEEL BRAKE LINE HAD RUPTURED, DUE TO CORROSION (RUST). APPARENTLY, THESE ARE NOT STAINLESS STEEL LINES. THIS LINE IS LOCATED ALONG THE LEFT FRAME RAIL. ABOUT 2 INCHE…
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2000 CHEVROLET SILVERADO W/ 99K MILES. THE BRAKES FAILED WHILE MY WIFE WAS DRIVING. I HAD THE TRUCK TOWED HOME. UPON VISUAL INSPECTION, I FOUND THAT THE REAR STEEL BRAKE LINE HAD RUPTURED, DUE TO CORROSION (RUST). APPARENTLY, THESE ARE NOT STAINLESS STEEL LINES. THIS LINE IS LOCATED ALONG THE LEFT FRAME RAIL. ABOUT 2 INCHES BEFORE IT CONNECTS TO THE RUBBER BRAKE HOSE, A LARGE SECTION OF IT WAS RUSTED. A QUICK INTERNET SEARCH REVEALS THAT MANY SILVERADO OWNERS HAVE HAD THE SAME BAD EXPERIENCE. IF MY OTHER 3 VEHICLES HAD THE SAME PROBLEM, I WOULD THEN AGREE THAT IT WAS MOST LIKELY DUE TO ROAD SALT. HOWEVER, THIS IS THE ONLY VEHICLE I HAVE OWNED THAT HAS HAD THIS HAPPEN TO IT. *TR
NHTSA ODI #10282293
83,357 miles · Aug 20, 2009
Service Brakes, Hydraulic
GM REFUSES TO CORRECT ABS PROBLEM. MY 2000 CHEVY SILVERADO IS EXPERIENCING A LOW SPEED ABS BRAKE ACTIVATION WHICH CAUSES AN EXTENDED BRAKING DISTANCE. THIS VEHICLE WAS SERVED BY THE DEALER IN 2005 FOR THE RECALL (NHTSA ACTION NUMBER PE05020). THE PROBLEM HAS NOW STARTED AGAIN AND GM REFUSES TO TAKE ANY ACTION SINCE THEY SAY TH…
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GM REFUSES TO CORRECT ABS PROBLEM. MY 2000 CHEVY SILVERADO IS EXPERIENCING A LOW SPEED ABS BRAKE ACTIVATION WHICH CAUSES AN EXTENDED BRAKING DISTANCE. THIS VEHICLE WAS SERVED BY THE DEALER IN 2005 FOR THE RECALL (NHTSA ACTION NUMBER PE05020). THE PROBLEM HAS NOW STARTED AGAIN AND GM REFUSES TO TAKE ANY ACTION SINCE THEY SAY THE RECALL WAS PERFORMED ALREADY AND THAT THE VEHICLE IS OUT OF WARRANTY AT 83000 MILES. *TR
NHTSA ODI #10281224
90,000 miles · Aug 20, 2009
Service Brakes, Hydraulic
ABS SYSTEM ACTUATES DURING LOW SPEED STOPS. THIS OCCURS TO SOME EXTENT ON ALL STOPS, OCCASIONALLY TO THE POINT IT IS NOT CERTAIN THE TRUCK WILL STOP. DEALER STATES RECALL IS CLOSED. *TR
NHTSA ODI #10281204
83,000 miles · Jul 16, 2009
Service Brakes, HydraulicCrash
WE HAD TWO CRASHES LAST WINTER (MICHIGAN 2009) WHEN WE APPLIED BRAKES AND THE VEHCILE (2000 SILVERADO PICKUP) LUNGED FORWARD INSTEAD OF STOPPING. WE FIGURED THE VEHCILE SLID ON ICEY ROADS BUT IN JULY THIS YEAR WE WERE IN A PARKING LOT WHERE WE SLAMMED ON BRAKES TO AVOID HITTING A VEHICLE AND TRUCK DID NOT STOP AND KEPT ON GOING.…
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WE HAD TWO CRASHES LAST WINTER (MICHIGAN 2009) WHEN WE APPLIED BRAKES AND THE VEHCILE (2000 SILVERADO PICKUP) LUNGED FORWARD INSTEAD OF STOPPING. WE FIGURED THE VEHCILE SLID ON ICEY ROADS BUT IN JULY THIS YEAR WE WERE IN A PARKING LOT WHERE WE SLAMMED ON BRAKES TO AVOID HITTING A VEHICLE AND TRUCK DID NOT STOP AND KEPT ON GOING. WE THEN TOOK IT TO GARAGE AND THE MECHANIC PUT A NEW WHEEL BEARING (WITH WHEEL SENSOR) ON RIGHT FRONT. I NOTICED ON 8/30/2005 NHTSA CAMPAIGN NUMBER. 05V379000 THAT THERE WAS A RECALL OF 1999-2002 TRUCKS WITH THIS PROBLEM. WE ARE SO LUCKY THAT ANOTHER HUMAN BEING WAS NOT HURT IN THESE INCIDENCES. WE HAVE REPLACED 2 BUMPERS AND NOW LOOKING AT A 3RD ONE. *TR
NHTSA ODI #10277030
224,000 miles · Jul 14, 2009
Air BagsCrash
INVOLVED IN A WRECK WERE MY FRONT END HIT THE REAR OF A FORD 4X4 F150, WAS TRAVELING AROUND 30 MPH AND AIRBAGS DID NOT DEPLOY. HAVE PICTURES OF MY FRONT END,TRUCK WAS TOTALED. *TR
NHTSA ODI #10276718
87,000 miles · May 21, 2009
Engine And Engine CoolingPower TrainStructure
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. EVER SINCE THE VEHICLE WAS PURCHASED, THE ENGINE HAS BEEN MAKING A STRANGE NOISE. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND THEY FOUND NO FAILURES. THE MANUFACTURER STATED THAT THEY WERE AWARE OF THE PISTONS STRIKING AGAINST THE METAL BECAUSE THERE WAS NOT ENOUGH CLEAR…
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TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. EVER SINCE THE VEHICLE WAS PURCHASED, THE ENGINE HAS BEEN MAKING A STRANGE NOISE. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND THEY FOUND NO FAILURES. THE MANUFACTURER STATED THAT THEY WERE AWARE OF THE PISTONS STRIKING AGAINST THE METAL BECAUSE THERE WAS NOT ENOUGH CLEARANCE BETWEEN THE PISTONS AND THE CYLINDER. THE MANUFACTURER COULD NOT CORRECT THE FAILURE AND THERE WERE NO RECALLS FOR THE ISSUE. THE MILEAGE ON THE VEHICLE HAS EXCEEDED THE WARRANTY; THEREFORE, THE MANUFACTURER WILL NOT ASSIST. IN ADDITION, THE CONTACT HEARD A NOISE COMING FROM THE REAR OF THE VEHICLE. THE DEALER STATED THAT THERE WAS A SLACK IN THE REAR, WHICH COULD BE REPAIRED BY REPLACING THE YOKE WITH A NICKEL PLATED COVER. THE REPAIR WAS NOT PERFORMED BECAUSE THE CONTACT FEELS AS IF THE MANUFACTURER SHOULD BE RESPONSIBLE FOR THE REPAIR COST. THE FAILURE MILEAGE WAS 87,000 AND CURRENT MILEAGE WAS 125,350. UPDATED 06/09/09. *LJ THE CONSUMER STATED WHEN THE TRANSMISSION SHIFTED INTO 2ND AND SOMETIME THIRD GEAR, THE REAR END OF THE VEHICLE SOUNDED AS IF IT WERE ABOUT TO COME APART. THE ENGINE ALSO MADE A NOISE AS IF THE VALVES WERE CLICKING AND TAPPING. UPDATED 06/10/09.*JB
NHTSA ODI #10269597
202,000 miles · May 18, 2009
Exterior Lighting
SIGNAL CONTINUED TO CLICK AFTER CANCELING, CHANGED SIGNAL FLASHER BUT DID NOT STOP, TOOK TO DEALER, DIAGNOSED AS MULTIFUNCTION SWITCH - $1,000 IN TOTAL TO FIX - NOT IMPRESSED WITH GM DESERVE TO GO BROKE AS THIS IS NOT THE ONLY PROBLEM. *TR
NHTSA ODI #10269304
213,060 miles · Apr 29, 2009
Fuel System, Gasoline
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING 55 MPH, THE CONTACT HEARD A LOUD BANGING NOISE COMING FROM THE REAR OF THE VEHICLE. HE WAS ABLE TO SAFELY REACH HIS DESTINATION. UPON FURTHER INSPECTION, HE NOTICED THAT THE FRONT FUEL TANK STRAP FAILED. HE DID NOT NOTICE ANY PRIOR FAILURES. THE VEHICLE WAS …
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TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING 55 MPH, THE CONTACT HEARD A LOUD BANGING NOISE COMING FROM THE REAR OF THE VEHICLE. HE WAS ABLE TO SAFELY REACH HIS DESTINATION. UPON FURTHER INSPECTION, HE NOTICED THAT THE FRONT FUEL TANK STRAP FAILED. HE DID NOT NOTICE ANY PRIOR FAILURES. THE VEHICLE WAS TAKEN TO THE DEALER AND THE CONTACT WAS INFORMED THAT THERE WAS NO CURRENT RECALL ON THE VEHICLE. THE VEHICLE WAS NOT INSPECTED OR REPAIRED. THE MANUFACTURER WOULD NOT PROVIDE COMPENSATION. THE FAILURE AND CURRENT MILEAGES WERE 213,060.
NHTSA ODI #10267251
81,000 miles · Apr 25, 2009
Steering
SILVERADO 1500 4WD STEERING GEAR BOX DEFECT IN THAT IT STARTS TO GRIND AND THREATENS FREEZE UP AND POWER STEERING LOSS USUALLY WHEN ATTEMPTING LEFT TURN. DEALER HAS ALREADY REPLACED 2 UNITS. THE ORIGINAL WAS REPLACED AT 81,000 MILES. THE SECOND AT 96,000 AND NOW IT'S BAD AGAIN AT 120,000 MILES. DEALER STATES THAT IT IS A DESIGN …
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SILVERADO 1500 4WD STEERING GEAR BOX DEFECT IN THAT IT STARTS TO GRIND AND THREATENS FREEZE UP AND POWER STEERING LOSS USUALLY WHEN ATTEMPTING LEFT TURN. DEALER HAS ALREADY REPLACED 2 UNITS. THE ORIGINAL WAS REPLACED AT 81,000 MILES. THE SECOND AT 96,000 AND NOW IT'S BAD AGAIN AT 120,000 MILES. DEALER STATES THAT IT IS A DESIGN DEFECT THAT WAS CORRECTED FOR THE 2008 MODELS. PICTURE MAKING A RIGHT HAND TURN WITH FULL POWER STEERING BUT IF YOU TURN LEFT IT WILL GRIND AND WINE AT FIRST, GRADUATING TO TRYING TO MAKE THE LEFT TURN AS IF THE ENGINE HAD DIED OUT. THAT'S HOW BAD IT GETS. IT WILL, AND I'M SURE, IT ALREADY HAS CAUSED ACCIDENT PROBLEMS. QUESTION IS, WHY DID THE ORIGINAL STEERING BOX LAST MORE THAN 80,000 MILES BUT THE REPLACEMENTS BARELY MAKE 15,000 MILES?? MIND YOU THESE ARE OEM REPLACEMENTS DONE BY THE DEALER. FURTHERMORE, THE REPLACEMENTS AR ONLY WARRANTIED FOR 1 YEAR OR 12,000 MILES. HOW CONVENIENT HUH? THIS ISSUE IS A SERIOUS SAFETY PROBLEM AND NEEDS TOTAL RECALL AS SOON AS POSSIBLE! PLEASE NOTE THAT THIS IS THE 3RD STEERING BOX TO GO BAD SO FAR AS OF THIS DATE 4/24/09. *TR
NHTSA ODI #10266683
180,000 miles · Mar 25, 2009
Service Brakes, Hydraulic
DRIVING AT SLOW SPEEDS AND APPLYING THE BRAKE TO STOP THE PEDAL HAD A CHATTER FEEL TO IT AND THEN THE PEDAL WENT TO THE FLOOR AND I COULD NOT STOP. AT THAT TIME I HAD TO SWERVE TO AVOID HITTING THE VEHICLE IN FRONT OF ME AT THE STOP LIGHT. THIS HAS HAPPENED A FEW TIMES. THIS ALSO HAPPENED PULLING INTO A PARKING LOT AND THE TRUCK…
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DRIVING AT SLOW SPEEDS AND APPLYING THE BRAKE TO STOP THE PEDAL HAD A CHATTER FEEL TO IT AND THEN THE PEDAL WENT TO THE FLOOR AND I COULD NOT STOP. AT THAT TIME I HAD TO SWERVE TO AVOID HITTING THE VEHICLE IN FRONT OF ME AT THE STOP LIGHT. THIS HAS HAPPENED A FEW TIMES. THIS ALSO HAPPENED PULLING INTO A PARKING LOT AND THE TRUCK JUMPED THE CURB AND BENT MY PLOW MOUNT. I AM FORTUNATE TO HAVE NOT HIT THE VEHICLE OR SOMEONE OR SOMETHING ELSE. THE MOST RECENT TIME WAS 3/24/09. I TOOK IT TO THE DEALER THIS MORNING HOPING THEY CAN FIGURE OUT WHAT THE PROBLEM IS. THEY SAY IT MIGHT BE THE SPEED SENSOR, BUT IF IT SOMETHING ELSE LIKE THE ABS CONTROL MODULE THAT THING COSTS OVER $1000 PLUS LABOR MAYBE THE MANUFACTURER SHOULD LOOK INTO THIS IF THIS MIGHT ALSO HAVE A PROBLEM WITH THIS UNIT. *TR
NHTSA ODI #10263006
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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