WHILE TRAVELING AT APPROX. 20-25MPH, PULLING AWAY FROM MY HOME, A SMALL ANIMAL RAN ACROSS IN FRONT OF ME. I HIT THE BRAKES, HARD, AND AFTER A MOMENTARY FEELING OF BRAKE PRESSURE, THE PEDAL WENT STRAIGHT TO THE FLOOR WITH NO BRAKES WHATSOEVER. I BACKED UP INTO MY DRIVEWAY, JACKED UP THE TRUCK AND PLACED IT ON JACK STANDS. THE UND…
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WHILE TRAVELING AT APPROX. 20-25MPH, PULLING AWAY FROM MY HOME, A SMALL ANIMAL RAN ACROSS IN FRONT OF ME. I HIT THE BRAKES, HARD, AND AFTER A MOMENTARY FEELING OF BRAKE PRESSURE, THE PEDAL WENT STRAIGHT TO THE FLOOR WITH NO BRAKES WHATSOEVER. I BACKED UP INTO MY DRIVEWAY, JACKED UP THE TRUCK AND PLACED IT ON JACK STANDS. THE UNDERSIDE OF THE TRUCK WAS WET AND DRIPPING BRAKE FLUID AROUND THE ABS UNIT BENEATH THE CAB. MY WIFE APPLIED THE BRAKE WHILE I EXAMINED THE UNDERSIDE. AN APPROX. 1/8IN HOLE WAS FOUND IN THE INCREDIBLY RUSTY AND WEAK STEEL LINE RUNNING FROM THE ABS TO THE LEFT FRONT WHERE IT JOINS THE RUBBER LINE TO THE L/F CALIPER. FURTHER EXAMINATION REVEALS ALL STEEL BRAKE LINES ARE INCREDIBLY RUSTY, STRUCTURALLY WEAK AND IN DANGER OF FAILURE. THIS COULD LEAD TO A VERY SERIOUS, CATASTROPHIC CRASH WITH THE POTENTIAL OF FATALITIES. FURTHER, ALL OF THE STEEL PARTS OF THE FUEL LINES ARE ALSO VERY, VERY RUSTY AND WEAK AND WITH THE HIGH INTERNAL PRESSURES AND HIGHLY FLAMMABLE AND EXPLOSIVE GASOLINE INSIDE ARE ANOTHER SERIOUS HAZARD. I AM A LICENSED MASTER AUTO/TRUCK AND MOTORCYCLE MECHANIC. IN NEARLY 50 YEARS OF DRIVING I HAVE NEVER SEEN A BRAKE LINE FAILURE FROM SUCH MASSIVE RUST ON A VEHICLE WITH SUCH LOW MILEAGE. THIS VEHICLE HAS ONLY 68,830 MILES ON IT. IT IS UNSAFE TO DRIVE. MANY, MANY OTHER OWNERS OF SIMILAR GMC AND CHEVROLET TRUCKS HAVE REPORTED SIMILAR BRAKE LINE RUST AND FAILURE. REPAIR/REPLACEMENT COST ESTIMATES CAN BE AS HIGH AS $1200 TO NEARLY $2000. BRAKE LINE FAILURE CAN KILL. IF EVER THERE WAS JUSTIFICATION FOR A SAFETY RELATED RECALL, THIS IS CERTAINLY IT. *TR
NHTSA ODI #10524044
Mileage unknown · Jun 20, 2013
Service Brakes
I LOST BRAKES ON A RETURN TRIP FROM SHOPPING TRIP AT A NEAR BY TOWN . I WAS ABLE TO STOP BY USING THE EMERGENCY BRAKE IN TIME TO PREVENT HITTING THE VEHICLE STOPPED AHEAD OF ME AT A RED LIGHT. I WAS ABLE TO GET MY VEHICLE HOME BY DRIVING AT VERY LOW SPEED AND USING THE EMERGENCY BRAKE WI…
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I LOST BRAKES ON A RETURN TRIP FROM SHOPPING TRIP AT A NEAR BY TOWN . I WAS ABLE TO STOP BY USING THE EMERGENCY BRAKE IN TIME TO PREVENT HITTING THE VEHICLE STOPPED AHEAD OF ME AT A RED LIGHT. I WAS ABLE TO GET MY VEHICLE HOME BY DRIVING AT VERY LOW SPEED AND USING THE EMERGENCY BRAKE WITH WITHOUT ANY FURTHER INCIDENT . I ATTEMPTED TO REPAIR THE CORRODED SECTION OF THE LINE . WHILE BLEEDING THE BRAKE LINES ANOTHER SECTION RUPTURE . UPON FURTHER INSPECTION I DISCOVERED ALL THE LINES WERE CORRODING AND NEEDED TO BE REPLACED . ALSO ALL THE COUPLINGS ON THE FUEL LINES ARE CORRODED . MY TRUCK HAS BEEN SITTING IN MY DRIVE WAY FOR LACK OF THE FUNDS TO GET IT REPAIRED .THE ESTIMATE FOR THE BRAKE LINES TO BE REPAIRED IS ABOUT $1200.00. I HAVEN'T GOT A CLEAR ESTIMATE FOR THE FUEL LINE COUPLINGS BECAUSE THE MIGHT ALSO HAVE TO BE REPLACED IF THEY CAN'T BE REPAIRED . THE FUEL LINES OTHER WISE ARE NOT CORRODED. *TR
NHTSA ODI #10520912
100,000 miles · Jun 7, 2013
Service BrakesCrash
A SECOND BRAKE LINE RUSTED THROUGH CAUSING THE PEDAL TO GO TO THE FLOOR UNABLE TO STOP QUICKLY ENOUGH TO AVOID ACCIDENT. *TR
NHTSA ODI #10515601
100,000 miles · Jun 7, 2013
Service Brakes
BRAKE LINE FAILURE DUE TO RUST THROUGH. TRUCK PEDAL WENT TO FLOOR IN HEAVY EXPRESSWAY TRAFFIC ALMOST CAUSING ACCIDENT. *TR
NHTSA ODI #10515600
90,000 miles · Jun 7, 2013
Service Brakes
FAILURE OF FOURTH ABS HUB SENSOR ON THIS SAME VEHICLE EACH COSTING BETWEEN $450 - $600. TO REPLACE. *TR
NHTSA ODI #10515599
70,000 miles · Jun 7, 2013
Service Brakes
ABS SENSOR IN HUB FAILED THIS IS ONE OF FOUR IDENTICAL FAILURES OF THE SAME PART IN THIS VEHICLE. *TR
NHTSA ODI #10515598
60,000 miles · Jun 7, 2013
Service Brakes
ABS SENSOR IN WHEEL HUB FAILURE THIS IS ONE OF FOUR IDENTICAL FAILURES OF THIS PART IN THIS SAME VEHICLE. *TR
NHTSA ODI #10515597
50,000 miles · Jun 7, 2013
Service Brakes
ABS SENSOR IN HUB FAILED THIS IS THE FIRST OF FOUR FAILURES OF THIS PART ON MY VEHICLE. EACH FAILURE COST BETWEEN $450 TO $600 EACH TO REPAIR. *TR
NHTSA ODI #10515596
70,000 miles · Apr 22, 2013
Service Brakes
WHILE DRIVING AT APP 50MPH I TRIED TO BRAKE TO AVOID A VEHICLE WHICH PULLED OUT IN FRONT OF ME AND MY PEDAL WENT ALL THE WAY TO THE FLOOR. TO MY HORROR I HAD NO BRAKES!!!!!! LUCKILY MY 2002 GMC IS A 5 SPEED MANUAL TRANSMISSION AND I WAS ABLE TO DOWN SHIFT TO AVOID AN ACCIDENT. USING MY TRANSMISSION AND FINALLY MY EMERGENCY BR…
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WHILE DRIVING AT APP 50MPH I TRIED TO BRAKE TO AVOID A VEHICLE WHICH PULLED OUT IN FRONT OF ME AND MY PEDAL WENT ALL THE WAY TO THE FLOOR. TO MY HORROR I HAD NO BRAKES!!!!!! LUCKILY MY 2002 GMC IS A 5 SPEED MANUAL TRANSMISSION AND I WAS ABLE TO DOWN SHIFT TO AVOID AN ACCIDENT. USING MY TRANSMISSION AND FINALLY MY EMERGENCY BRAKE (WHICH RUSTED THROUGH THE YEAR BEFORE AND COST OVER $300. TO REPAIR)) I WAS ABLE TO PULL TO THE SIDE OF THE ROAD AND SAFELY STOP. MY AUTO WAS TOWED TO A LOCAL REPAIR SHOP WHERE THE MECHANIC SHOWED ME THE RUSTED THROUGH BRAKE LINES. IT COST ME OVER $2,000 FOR REPAIRS. *TR
NHTSA ODI #10509032
95,000 miles · Apr 15, 2013
Service Brakes
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THAT THE ANTI LOCK SYSTEM BRAKING SYSTEM MALFUNCTIONED AT VARIOUS SPEEDS. THE BRAKES ENGAGED INDEPENDENTLY MAKING IT DIFFICULT TO DRIVE THE VEHICLE. THE VEHICLE WAS INSPECTED BY MECHANIC WHO FOUND CORROSION IN THE ANTI LOCK BRAKING SYSTEM SENSOR. THE BRAKING SYSTEM …
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THAT THE ANTI LOCK SYSTEM BRAKING SYSTEM MALFUNCTIONED AT VARIOUS SPEEDS. THE BRAKES ENGAGED INDEPENDENTLY MAKING IT DIFFICULT TO DRIVE THE VEHICLE. THE VEHICLE WAS INSPECTED BY MECHANIC WHO FOUND CORROSION IN THE ANTI LOCK BRAKING SYSTEM SENSOR. THE BRAKING SYSTEM WAS REPLACED. THE FAILURE RECURRED SEVERAL TIMES. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 95,000. THE CURRENT MILEAGE WAS 119,000.
ON CERTAIN VANS EQUIPPED WITH SURE-LOK WHEELCHAIR SECUREMENT SYSTEMS, THE SPROCKET TEETH OF THE RETRACTOR ASSEMBLY IS OUT OF ALIGNMENT.
Consequence & remedy
Consequence: IN THE EVENT OF A VEHICLE CRASH, THE WHEELCHAIR MAY NOT BE ADEQUATELY SECURED POSSIBLY RESULTING IN INJURIES TO A WHEELCHAIR OCCUPANT.
Remedy: DEALERS WILL INSPECT AND REPLACE THE WHEELCHAIR SECUREMENT RETRACTORS AS NECESSARY. SURE-LOK WILL HANDLE THE REPAIRS FOR THIS CAMPAIGN. OWNERS SHOULD CONTACT SURE-LOCK AT 1-908-231-1804 OR MOBILITYWORKS AT 1-800-769-8267.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2
EA04011 · 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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