NHTSA owner reports · September 18, 2026 snapshot.
Parking Brake complaints
25 reportsClear category filter131,792 miles · Nov 28, 2011
Parking BrakeService Brakes, Hydraulic
I WAS TRAVELING WEST BOUND IN THE CENTER LANE OF INTERSTATE 50 AT APPROXIMATELY 55 MILES PER HOUR WHEN ANOTHER VEHICLE ABRUPTLY CHANGED LANES IN FRONT OF ME WHILE CROSSING THE SEVERN RIVER BRIDGE IN MARYLAND. I ABRUPTLY APPLIED MY BRAKES AND THE PEDAL WENT TO THE FLOOR. THERE WAS A TOTAL LOSS OF THE MAIN AND EMERGENCY BRAKE…
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I WAS TRAVELING WEST BOUND IN THE CENTER LANE OF INTERSTATE 50 AT APPROXIMATELY 55 MILES PER HOUR WHEN ANOTHER VEHICLE ABRUPTLY CHANGED LANES IN FRONT OF ME WHILE CROSSING THE SEVERN RIVER BRIDGE IN MARYLAND. I ABRUPTLY APPLIED MY BRAKES AND THE PEDAL WENT TO THE FLOOR. THERE WAS A TOTAL LOSS OF THE MAIN AND EMERGENCY BRAKES. I WAS ABLE TO SAFELY DOWN SHIFT AND COAST TO THE SHOULDER. UPON INSPECTION, I FOUND A BRAKE LINE UNDER THE CABIN AND UNDER THE DRIVERS SEAT HAD CORRODED AND BROKEN AT THE HANGER AND BRAKE FLUID WAS DRAINING FROM THE LINE. *KB
NHTSA ODI #10437629
Mileage unknown · Jul 28, 2011
Electrical SystemParking BrakeService Brakes, Hydraulic
ABS AND PARKING BRAKE LIGHTS WILL NOT GO OFF. DEALER HAS TOLD ME THAT THE ANTI-LOCK BRAKES WILL NOT WORK IN THIS CONDITION. STATE OF COLORADO WILL NOT ALLOW MY VEHICLE TO PASS THE REQUIRED EMISSIONS TEST WITH THE VEHICLE IN THIS CONDITION. CHECKED IF THERE WAS A RECALL AND THERE WAS BUT MY STATE, COLORADO IS NOT INCLUDED IN T…
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ABS AND PARKING BRAKE LIGHTS WILL NOT GO OFF. DEALER HAS TOLD ME THAT THE ANTI-LOCK BRAKES WILL NOT WORK IN THIS CONDITION. STATE OF COLORADO WILL NOT ALLOW MY VEHICLE TO PASS THE REQUIRED EMISSIONS TEST WITH THE VEHICLE IN THIS CONDITION. CHECKED IF THERE WAS A RECALL AND THERE WAS BUT MY STATE, COLORADO IS NOT INCLUDED IN THIS RECALL (NHTSA CAMPAIGN ID NUMBER: 05V39000). *TR
NHTSA ODI #10415458
85,000 miles · Jul 27, 2010
Parking BrakeService Brakes, Hydraulic
2000 CHEVROLET SILVERADO 2 WHEEL DRIVE EXTENDED CAB WITH 85000 MILES CRAWLING THROUGH RUSH HOUR TRAFFIC, SOMEONE CUT ME OFF. I STEPPED ON THE BRAKES AND THE PEDAL WENT SLOWLY TO THE FLOOR. I TRIED "PUMPING THE PEDAL" TO NO EFFECT. I TRIED THE EMERGENCY BRAKE. IT DID NOT HOLD THE CAR. I PULLED OFF THE ROAD. SLOWED DOWN BY DOWN …
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2000 CHEVROLET SILVERADO 2 WHEEL DRIVE EXTENDED CAB WITH 85000 MILES CRAWLING THROUGH RUSH HOUR TRAFFIC, SOMEONE CUT ME OFF. I STEPPED ON THE BRAKES AND THE PEDAL WENT SLOWLY TO THE FLOOR. I TRIED "PUMPING THE PEDAL" TO NO EFFECT. I TRIED THE EMERGENCY BRAKE. IT DID NOT HOLD THE CAR. I PULLED OFF THE ROAD. SLOWED DOWN BY DOWN SHIFTING. COULD NOT FIND THE PROBLEM. PUMPED THE BRAKES A FEW TIMES. I SAW A PUDDLE UNDER THE DRIVERS SIDE REAR. I HAD RUPTURE IN THE METAL BRAKE LINE. I CRAWLED TO A SERVICE STATION WHO REPLACED THE BRAKE LINE. I HAVE NOT FOUND OUT WHAT IS WRONG WITH THE EMERGENCY BRAKE. *TR
NHTSA ODI #10345742
51,203 miles · Aug 31, 2009
Parking BrakeCrash
PARKING BRAKE FAILED TO OPERATE AND TRUCK WAS DAMAGED AS A RESULT. THIS DEFECT IS DESCRIBED IN RECALL 05042 FOR TRUCKS WITH MANUAL TRANSMISSION. MY TRUCK HAS AN AUTOMATIC TRANSMISSION BUT HAS THIS EXACT SAME DEFECT. *TR
NHTSA ODI #10282490
175,913 miles · Jan 28, 2009
Parking BrakeService Brakes, Hydraulic
1 = WHEN I ARRIVED AT WORK, MY RIGHT REAR WHEEL WAS SEVERELY HEATING UP CAUSING WHEEL TO SMOKE AND SMELL OF BRAKE PADS BURNING UP. 2 = FIRST TIME OCCURRENCE, NO SOUND OF INTERMEDIATE SCRAPING NOISES HEARD FROM REAR OF VEHICLE WHILE DRIVING. 3 = TOOK TRUCK TO REPAIR SHOP, THEY DETERMINED THE EMERGENCY BRAKE PADS CAME INTO CONT…
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1 = WHEN I ARRIVED AT WORK, MY RIGHT REAR WHEEL WAS SEVERELY HEATING UP CAUSING WHEEL TO SMOKE AND SMELL OF BRAKE PADS BURNING UP. 2 = FIRST TIME OCCURRENCE, NO SOUND OF INTERMEDIATE SCRAPING NOISES HEARD FROM REAR OF VEHICLE WHILE DRIVING. 3 = TOOK TRUCK TO REPAIR SHOP, THEY DETERMINED THE EMERGENCY BRAKE PADS CAME INTO CONTACT WITH PARKING BRAKE DRUMS, CAUSING HEAT BUILD UP WHICH BURNED UP THE CALIPER, BRAKE PADS AND BRAKE HOSE AND THEN TOLD ME THERE WAS A 9 PAGE SAFETY RECALL ALREADY ISSUED BY GM FOR THIS SAME EXACT PARKING BRAKE DEFECT. I TOLD THEM NOT TO REPAIR THE TRUCK. I WENT TO THE GM DEALER TO HAVE IT REPAIRED FREE. GM REFUSED TO REPAIR THE TRUCK STATING THE SAFETY RECALL (I.E. # 05042B) ONLY EFFECTED VEHICLES WITH MANUAL TRANSMISSIONS AND MY TRUCK IS AUTOMATIC. PLEASE NOTE: I USED TO BE NAISE CERTIFIED IN BRAKES. I ASKED THE SERVICE MGR WHAT DIFFERENCE IS THERE IN "ANY" OF THE BRAKE COMPONENT PART NUMBERS BETWEEN A MANUAL AND AUTOMATIC VEHICLE OF THIS SAME YEAR AND TYPE. THERE IS NO DIFFERENCE. IF I WENT TO THE AUTO PARTS STORE FOR ANY ONE OF THE EMERGENCY BRAKE COMPONENTS, BRAKE PADS, ROTORS, CALIPERS THEY WOULD NEVER ASK IF THE VEHICLE IS MANUAL OR AUTOMATIC, THEY ONLY ASK THE YEAR AND SIZE OF MOTOR. IF THE PARKING BRAKE CAN FAIL ON A MANUAL TRANSMISSION VEHICLE, AND THERE IS NOT ONE DIFFERENCE IN PART NUMBERS THEN IT CAN FAIL ON AN AUTOMATIC VEHICLE. THE GM SERVICE MANAGER AGREED BUT SAID HE COULDN'T DO ANYTHING BECAUSE THE RECALL STATES MANUAL TRANSMISSION VEHICLES. I SAID YOU KNOW IT HAS TO BE A TYPO ERROR ON THE RECALL DOCUMENT. MY AUTOMATIC VEHICLE HAD A CONTACT CONDITION BETWEEN THE PARKING BRAKE PADS AND THE PARKING BRAKE DRUMS AND MY PARKING BRAKE "WAS NOT APPLIED". THE RECALL STATES THIS IS THE ROOT CAUSE OF THE SAME IDENTICAL FAILURE ON A MANUAL TRANSMISSION VEHICLE. SAME PARTS, SAME ASSEMBLY LINE, IDENTICAL SAFETY ISSUE. *TR
NHTSA ODI #10256557
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…
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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
Mileage unknown · Aug 25, 2007
Parking Brake
RECENT VEHICLE INSPECTION REJECTION DUE TO PARKING BRAKE FAILURE TO OPERATE ON 2000 CHEVROLET SILVERADO. THE PARKING BRAKE FAILED TO OPERATE AT A VERY LOW MILEAGE ON THIS VEHICLE. REPAIRS LED TO HUNDREDS OF DOLLARS. I AM AWARE OF A RECALL ON VEHICLES EQUIPPED WITH MANUAL TRANSMISSIONS, DID CHEVROLET EQUIP AUTO TRANSMISSIONS WITH…
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RECENT VEHICLE INSPECTION REJECTION DUE TO PARKING BRAKE FAILURE TO OPERATE ON 2000 CHEVROLET SILVERADO. THE PARKING BRAKE FAILED TO OPERATE AT A VERY LOW MILEAGE ON THIS VEHICLE. REPAIRS LED TO HUNDREDS OF DOLLARS. I AM AWARE OF A RECALL ON VEHICLES EQUIPPED WITH MANUAL TRANSMISSIONS, DID CHEVROLET EQUIP AUTO TRANSMISSIONS WITH A DIFFERENT PARKING BRAKE SYSTEM? THIS AUTO MAKER SHOULD STEP UP AND CORRECT THIS PROBLEM ON ALL AFFECTED VEHICLES,THANKS VR. *TR
NHTSA ODI #10200739
54,000 miles · Jul 27, 2007
Parking BrakeCrash
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO. THE CONTACT NOTICED BRAKE FLUID LEAKING AND STATED THAT THE BRAKE PEDAL MUST BE DEPRESSED TO THE FLOOR IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER ON JULY 16, 2007. THE DEALER STATED THAT THE BRAKE LINES AND BRAKE PIPES NEEDED TO BE REPLACED. THE CONTACT D…
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TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO. THE CONTACT NOTICED BRAKE FLUID LEAKING AND STATED THAT THE BRAKE PEDAL MUST BE DEPRESSED TO THE FLOOR IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER ON JULY 16, 2007. THE DEALER STATED THAT THE BRAKE LINES AND BRAKE PIPES NEEDED TO BE REPLACED. THE CONTACT DROVE THE VEHICLE INTO HER GARAGE DOOR AT 10 MPH. THE GARAGE DOOR HAS BEEN REPLACED. THE CURRENT MILEAGE WAS 59,000 AND FAILURE MILEAGE WAS 54,000.
NHTSA ODI #10197702
25,000 miles · Jul 23, 2007
Parking Brake
THE PARKING BRAKE SHOES ON MY 2000 CHEVROLET SILVERADO 1500 HAVE REQUIRED NUMEROUS REPLACEMENTS. I HAVE TO REPLACE THE PARKING BRAKE SHOES EVERY YEAR BEFORE HAVING MY TRUCK INSPECTED. EVEN AFTER BEING REPLACED, THE PARKING BRAKE BARELY HOLDS ON EVEN THE SLIGHTEST INCLINE. *TR
NHTSA ODI #10197177
56,301 miles · Apr 1, 2007
Parking Brake
YEARLY INSPECTION IS DUE. MY HUSBAND CHECKED PARKING BRAKE 3 DAYS BEFORE TAKING MY PICKUP IN FOR INSPECTION. IT WAS FINE THAT DAY. MY PICKUP FAILED INSPECTION BECAUSE PARKING BRAKE WOULD NOT HOLD. MY HUSBAND TESTED THE BRAKE AT THE INSPECTION CENTER AND IT WENT TO THE FIREWALL AND WOULD NOT HOLD. WE ACCUSED THE INSPECTOR OF TAMP…
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YEARLY INSPECTION IS DUE. MY HUSBAND CHECKED PARKING BRAKE 3 DAYS BEFORE TAKING MY PICKUP IN FOR INSPECTION. IT WAS FINE THAT DAY. MY PICKUP FAILED INSPECTION BECAUSE PARKING BRAKE WOULD NOT HOLD. MY HUSBAND TESTED THE BRAKE AT THE INSPECTION CENTER AND IT WENT TO THE FIREWALL AND WOULD NOT HOLD. WE ACCUSED THE INSPECTOR OF TAMPERING WITH THE BRAKE. HE INSISTS THE FAILURE OF THE PARKING BRAKE IS A COMMON PROBLEM WITH OUR MODEL. WHICH IS TRUE? IF IT IS A COMMON PROBLEM GM SHOULD ISSUE A RECALL AND REPAIR THE BRAKE AT NO COST TO THE CONSUMER. *JB
NHTSA ODI #10186665
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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