NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
166 reports130,000 miles · May 10, 2007
Air BagsSeat BeltsCrashInjury
THIS VEHICLE WAS INVOLVED IN A SINGLE VEHICLE ACCIDENT HITTING A GAURDRAIL AND CONCRETE DIVIDER. THE 2002 GMC SIERRA1 1500 EXT. CAB TRUCK HAS BEEN TOTALED BY THE INSURANCE COMPANY. THERE WAS EXTENSIVE DAMAGE TO THE FRONT END, HOOD, SIDE PANEL, BED, AND BUMPER, DRIVER SIDE TIRE, ETC. THE AIR BAG FAILED TO DEPLOY. IT ALSO APPEARED…
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THIS VEHICLE WAS INVOLVED IN A SINGLE VEHICLE ACCIDENT HITTING A GAURDRAIL AND CONCRETE DIVIDER. THE 2002 GMC SIERRA1 1500 EXT. CAB TRUCK HAS BEEN TOTALED BY THE INSURANCE COMPANY. THERE WAS EXTENSIVE DAMAGE TO THE FRONT END, HOOD, SIDE PANEL, BED, AND BUMPER, DRIVER SIDE TIRE, ETC. THE AIR BAG FAILED TO DEPLOY. IT ALSO APPEARED THE SEAT BELT JAMMED UPON IMPACT AS OPPOSED TO LOCKING AS IT IS SUPPOSED TO. EVEN THOUGH THE INJURIES WERE NOT SEVERE, SHE HIT HER HEAD ON THE STEERING WHEEL, AND HAD SUSTAINED PROBLEMS FROM THE EXCESSIVE IMPACT AMONG OTHER THINGS. SOMEONE SHOULD CHECK INTO WHY THE AIR BAG DID NOT DEPLOY AS WELL AS THE SEAT BELT.*AK
NHTSA ODI #10190370
10,900 miles · Mar 28, 2007
Service Brakes, HydraulicCrash
TL*- THE CONTACT STATED THAT WHILE DRIVING THE 2002 GMC SIERRA WITH 10,900 FAILURE MILEAGE AT 15 MPH IN THE DRIVEWAY HE PUT THE FOOT ON THE BRAKE PEDAL AND THE ABS SYSTEM ENGAGED , NOT ALLOWING THE VEHICLE TO STOP. THE VEHICLE WENT THROUGH THE GARAGE WALL. THE VEHICLE WAS TAKEN TO A DEALER, AND THEY FOUND FOUR ABS ERROR …
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TL*- THE CONTACT STATED THAT WHILE DRIVING THE 2002 GMC SIERRA WITH 10,900 FAILURE MILEAGE AT 15 MPH IN THE DRIVEWAY HE PUT THE FOOT ON THE BRAKE PEDAL AND THE ABS SYSTEM ENGAGED , NOT ALLOWING THE VEHICLE TO STOP. THE VEHICLE WENT THROUGH THE GARAGE WALL. THE VEHICLE WAS TAKEN TO A DEALER, AND THEY FOUND FOUR ABS ERROR CODES. THE DEALER REPLACED THE ABS SENSORS ON THE FRONT WHEELS. THE CURRENT MILEAGE WAS 11,002.*AK CONSUMER HAS PROVIDED INVOICES FOR THE DEALER. UPDATE *4/23/07T *TR
NHTSA ODI #10186405
87,000 miles · Mar 8, 2007
Parking Brake
FAILURE OF PARKING BRAKE ON 2002 GMC SIERRA PICKUP. DURING STATE INSPECTION IT WAS FOUND TO BE UNABLE TO HOLD. IT WAS FOUND THAT THE ADJUSTMENTS SCREWS ON BOTH REAR EMERGENCY BRAKES WERE FULLY DISENGAGED, SO THIS MEANT THAT THEY HAD BACKED OFF. THEY WERE AGAINST THE STOPS. THEY WERE ADJUSTED BACK UP, BUT THIS WILL MOST LIKELY …
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FAILURE OF PARKING BRAKE ON 2002 GMC SIERRA PICKUP. DURING STATE INSPECTION IT WAS FOUND TO BE UNABLE TO HOLD. IT WAS FOUND THAT THE ADJUSTMENTS SCREWS ON BOTH REAR EMERGENCY BRAKES WERE FULLY DISENGAGED, SO THIS MEANT THAT THEY HAD BACKED OFF. THEY WERE AGAINST THE STOPS. THEY WERE ADJUSTED BACK UP, BUT THIS WILL MOST LIKELY HAPPEN AGAIN. I AM A MECHANIC AND KNOW THIS IS A DEFECT THAT COULD CAUSE DEATHS IF THIS IS NOT CORRECTED. THE CAR INSPECTION CENTER WHERE THE TRUCK WAS INSPECTED SAID THERE IS A MANUFACTURING DEFECT THAT THE DEALERS KNOW IS BAD, BUT THEY DO NOTHING TO CORRECT THE DEFECT. HE SAID THEY SEE A LARGE NUMBER OF GMC TRUCK THAT THE PARKING BRAKES IS DEFECTIVE. (MANY OF THE PEOPLE ALSO SAY THEY NEVER USE THE PARKING BRAKE. *JB
NHTSA ODI #10184581
42,000 miles · Mar 8, 2007
Parking Brake
PARKING BRAKE FAILURE ON 2002 GMC SIERRA 1500 2WD 4DR EXT CAB W/ AUTOMATIC TRANS. DUE TO EXCESSIVE WEAR OF FRICTION LININGS DUE TO DEFECT IN RELEASE MECHANISM. HAVE 50K MILES ON VEHICLE & EMERGENCY BRAKE SHOES HAVE WORN INTO ROTORS. THE LACK OF A WORKING PARKING BRAKE HAS CAUSED THE TRANSMISSION TO LOCK IN PARK WHEN ON AN INCLIN…
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PARKING BRAKE FAILURE ON 2002 GMC SIERRA 1500 2WD 4DR EXT CAB W/ AUTOMATIC TRANS. DUE TO EXCESSIVE WEAR OF FRICTION LININGS DUE TO DEFECT IN RELEASE MECHANISM. HAVE 50K MILES ON VEHICLE & EMERGENCY BRAKE SHOES HAVE WORN INTO ROTORS. THE LACK OF A WORKING PARKING BRAKE HAS CAUSED THE TRANSMISSION TO LOCK IN PARK WHEN ON AN INCLINE, ESPECIALLY WHEN TOWING. VEHICLE WILL NOT PASS STATE INSPECTION BECAUSE OF THIS. REFERENCE NHTSA #PE03057, #EA04011.*JB
NHTSA ODI #10184539
43,500 miles · Jan 31, 2007
Service Brakes, Hydraulic
THERE IS ABNORMAL BRAKE ROTOR DETERIATION AND RUSTING DUE TO POOR MANUFACTURING OR STEEL FORMULAS WHICH RUST ACCERLERATES AND WEARS DOWN THE PADS UNEVENLY. I HAVE WORKED ON BRAKES ON MANY AUTOS AND A FEW TRUCKS I'VE OWNED OVER THE LAST FEW DECADES AND NEVER HAVE SEEN SUCH RUSTING AND SURFACE FLAKING OF THE DISK ROTOR ON MY VIHIC…
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THERE IS ABNORMAL BRAKE ROTOR DETERIATION AND RUSTING DUE TO POOR MANUFACTURING OR STEEL FORMULAS WHICH RUST ACCERLERATES AND WEARS DOWN THE PADS UNEVENLY. I HAVE WORKED ON BRAKES ON MANY AUTOS AND A FEW TRUCKS I'VE OWNED OVER THE LAST FEW DECADES AND NEVER HAVE SEEN SUCH RUSTING AND SURFACE FLAKING OF THE DISK ROTOR ON MY VIHICLE. I HAD MY DEALER LOOK AT THE ROTORS AND THEY AGREED IT MAY BE A BIT EXCESSIVE. I HAVE TO REPLACE ALL FOUR ROTORS DUE TO POOR QUALITY AND UNREPAIRABLE ROTORS. THE ROTORS LOOK LIKE THEY CAME OFF A 20 YEAR OLD TRUCK....THIS IS A SAFETY AND QUALITY PROBLEM THAT SHOULD BE LOOKED INTO. THANK YOU
NHTSA ODI #10181233
56,822 miles · Nov 13, 2006
Steering
DT*: THE CONTACT STATED WHILE TURNING AT VARIOUS SPEEDS ON THE HIGHWAY, THERE WAS A THUMPING NOISE COMING FROM THE STEERING WHEEL COLUMN. THE VEHICLE WAS INSPECTED BY A DEALER WHO DETERMINED THE INTERMEDIATE STEERING SHAFT AND SHAFT PITMAN NEEDED TO BE REPLACED. AFTERWARDS, THE PROBLEM PERSISTED. THE VEHICLE WAS INSPECTED BY …
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DT*: THE CONTACT STATED WHILE TURNING AT VARIOUS SPEEDS ON THE HIGHWAY, THERE WAS A THUMPING NOISE COMING FROM THE STEERING WHEEL COLUMN. THE VEHICLE WAS INSPECTED BY A DEALER WHO DETERMINED THE INTERMEDIATE STEERING SHAFT AND SHAFT PITMAN NEEDED TO BE REPLACED. AFTERWARDS, THE PROBLEM PERSISTED. THE VEHICLE WAS INSPECTED BY THE DEALER WHO DETERMINED THE INTERMEDIATE STEERING SHAFT NEEDED TO BE LUBRICATED. THE MANUFACTURER WAS ALERTED, AND DETERMINED THE INTERMEDIATE STEERING SHAFT LUBRICATION WAS A PART OF GENERAL MAINTENANCE.
NHTSA ODI #10173355
52,000 miles · Sep 23, 2006
Suspension
I HAVE A 2002 GMC SIERRA 1500 EXTENDED CAB PICKUP WITH 52000 MILES ON IT. THE FRONT HUB BEARINGS ARE ALREADY REQUIRE REPLACEMENT. ON CONSULTING WITH THE LOCAL GARAGE, I DISCOVERED THIS WAS NOT AN ANOMALY, BUT , RATHER, A COMMON OCCURRENCE. MY PREVIOUS EXPERIENCE OVER THE YEARS WITH GM PRODUCTS IS THAT FRONT WHEEL BEARINGS COU…
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I HAVE A 2002 GMC SIERRA 1500 EXTENDED CAB PICKUP WITH 52000 MILES ON IT. THE FRONT HUB BEARINGS ARE ALREADY REQUIRE REPLACEMENT. ON CONSULTING WITH THE LOCAL GARAGE, I DISCOVERED THIS WAS NOT AN ANOMALY, BUT , RATHER, A COMMON OCCURRENCE. MY PREVIOUS EXPERIENCE OVER THE YEARS WITH GM PRODUCTS IS THAT FRONT WHEEL BEARINGS COULD BE PACKED OR REPLACED AT REASONABLE COST, AND THE PARTS PROVIDED AUDIBLE NOTICE OF FAILURE. THE CURRENT DESIGN DOES NOT PROVIDE THIS SAFETY FEATURE. THE ENTIRE HUB MUST BE REPLACED WHEN IT FAILS. AT A COST JUST QUOTED OF JUST BELOW $450 PER WHEEL. THE UNFORTUNATE FACT IS THAT IT IS UNKNOWN HOW MANY OWNERS OF GM PRODUCTS FROM 1998 ONWARD ARE DRIVING WITH WHEEL HUBS THAT ARE SO WORN THAT A CATASTROPHIC FAILURE COULD CAUSE LOSS OF A WHEEL AT HIGHWAY SPEEDS.. UNTIL THE RESOLUTION OF THIS DESIGN SHORTFALL, HIGHWAY DRIVING IS EXTREMELY DANGEROUS. *NM
NHTSA ODI #10169037
82,000 miles · Sep 20, 2006
Structure
2002 GMC SIERRA THE GALVANIZED STEEL SUPPORT CABLES THAT RETAIN THE TAILGATE IN THE OPEN POSITION CORRODE THROUGH AND BREAK WHERE CARGO OR PEOPLE ON THE TAILGATE MAY FALL. CARGO FALLING OF THE TAILGATE VERY NEARLY STRUCK A NEARBY PERSON AND INJURY WAS LUCKILY AVOIDED. THIS HAS OCCURRED TWICE ON THE VEHICLE, THE FIRST TIME G…
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2002 GMC SIERRA THE GALVANIZED STEEL SUPPORT CABLES THAT RETAIN THE TAILGATE IN THE OPEN POSITION CORRODE THROUGH AND BREAK WHERE CARGO OR PEOPLE ON THE TAILGATE MAY FALL. CARGO FALLING OF THE TAILGATE VERY NEARLY STRUCK A NEARBY PERSON AND INJURY WAS LUCKILY AVOIDED. THIS HAS OCCURRED TWICE ON THE VEHICLE, THE FIRST TIME GMC REPLACED THE CABLES UNDER WARRANTY AND SUGGESTED THAT THIS WAS A RANDOM FAILURE. MOST RECENTLY THEY HAVE REFUSED TO CORRECT THE PROBLEM. GMC WAS NOTIFIED OF THIS AND REFUSED TO TAKE CORRECTIVE ACTION.
NHTSA ODI #10168738
Mileage unknown · Aug 11, 2006
Steering
INTERMEDIATE STEERING SHAFT MAKES CLUNKING NOISE. FIRST REPAIRED ON 11-13-03. HAS BEEN REPAIRED FOUR OTHER TIMES. IS CURRENTLY AT DEALERSHIP BEING FIXED AGAIN ON 8-11-06. EACH TIME IT HAS BEEN IN FOR REPAIR, THE STEERING SHAFT HAS BEEN LUBRICATED. *NM
NHTSA ODI #10165236
52,577 miles · Aug 9, 2006
Exterior Lighting
DT*: THE CONTACT STATED WHILE DRIVING VARIOUS SPEEDS, THE DAYTIME RUNNING LIGHTS OVERHEATED AND SCORCHED THE REMAINING LIGHT BULB SOCKETS WITHOUT WARNING. ALTHOUGH THE VEHICLE WAS NOT INSPECTED BY THE DEALER, THE CONTACT CONTINUED TO REPLACE THE LIGHT BULBS AS THIS PROBLEM PERSISTED. THE MANUFACTURER WAS NOT CONTACTED.
NHTSA ODI #10165016
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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