NHTSA owner reports · September 18, 2026 snapshot.
Parking Brake complaints
20 reportsClear category filter88,000 miles · Nov 25, 2013
Parking BrakeService Brakes
TL* THE CONTACT OWNS A 2002 CHEVROLET C1500 2WD. THE CONTACT WAS COASTING AND ATTEMPTED TO BRAKE BUT THE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD AS THE BRAKES FAILED. THE CONTACT PLACED THE VEHICLE IN NEUTRAL AND APPLIED THE PARKING BRAKE TO STOP THE VEHICLE. THE VEHICLE WAS INSPECTED AND IT WAS DETERMINED ALL FOUR BRAKE LIN…
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TL* THE CONTACT OWNS A 2002 CHEVROLET C1500 2WD. THE CONTACT WAS COASTING AND ATTEMPTED TO BRAKE BUT THE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD AS THE BRAKES FAILED. THE CONTACT PLACED THE VEHICLE IN NEUTRAL AND APPLIED THE PARKING BRAKE TO STOP THE VEHICLE. THE VEHICLE WAS INSPECTED AND IT WAS DETERMINED ALL FOUR BRAKE LINES WEE SEVERELY RUSTED AND CORRODED.. THE MANUFACTURER WAS MADE AWARE OF THE INCIDENT. THE APPROXIMATE FAILURE MILEAGE WAS 88,000...UPDATED 12-23-13 *BF
NHTSA ODI #10553659
147,059 miles · Feb 4, 2012
Parking BrakeService Brakes, Hydraulic
SEVERE BRAKE FLUID LEAK ON MAIN STEEL LINE(S) UNDER DRIVERS SIDE ABOUT 1/2 WAY TOWARD THE REAR WHEELS. UNABLE TO DRIVE VEHICLE. PEDAL WENT TO FLOOR AS I WAS TRYING TO PUT THE VEHICLE IN GEAR. PUMPED BRAKES WITH NO INCREASE IN PEDAL. LOOKED UNDER VEHICLE AND BRAKE FLUID ON CEMENT. *KB
NHTSA ODI #10446640
107,000 miles · Nov 14, 2011
Parking BrakeService Brakes, Hydraulic
THE PARKING BRAKE ON MY TRUCK WILL NOT HOLD AS IT SHOULD, THUS CAUSING VEHICLE TO ROLL DOWN DRIVEWAY. THERE IS A RECALL FOR SILVERADO'S WITH MANUAL TRANSMISSIONS,( DEFECT INVESTIGATION # EA04011 GM RECALL #05042 NHTSA CAMPAIGN ID# 05V161000) MINE IS A AUTOMATIC, BUT THE AUTO AND MANUAL USE THE SAME PARKING BRAKE SET-UP. I HAVE D…
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THE PARKING BRAKE ON MY TRUCK WILL NOT HOLD AS IT SHOULD, THUS CAUSING VEHICLE TO ROLL DOWN DRIVEWAY. THERE IS A RECALL FOR SILVERADO'S WITH MANUAL TRANSMISSIONS,( DEFECT INVESTIGATION # EA04011 GM RECALL #05042 NHTSA CAMPAIGN ID# 05V161000) MINE IS A AUTOMATIC, BUT THE AUTO AND MANUAL USE THE SAME PARKING BRAKE SET-UP. I HAVE DONE SOME READING ON-LINE CHEVROLET TRUCK FORUMS AND THERE ARE ALLOT OF SILVERADO/SUV GM OWNERS WITH AUTOMATICS THAT HAVE THIS SAME TYPE OF BRAKE SYSTEM THAT ARE HAVING THE SAME ISSUE, NOT HOLDING DUE TO PREMATURE WEAR OUT OF PARKING BRAKE SHOE LINING. THERE IS ALSO A GM TECH SERV BULL FOR THIS MATTER AS WELL, BUT NOT A RECALL FOR THE VEHICLES WITH AUTO TRANSMISSIONS, WHAT ARE THE OWNERS OF AUTOMATICS LESS IMPORTANT. THE TSB HAS THE DEALERS REPLACE THE SPRING RETAINER CLIP JUST AS THE RECALL DOES. I THINK THE TSB NEEDS TO TAKE A HARD LOOK AT THE PARKING BRAKE ISSUES ON THE TRUCKS/SUVS WITH AUTOMATIC TRANSMISSIONS AS WELL. *TR
NHTSA ODI #10435470
156,000 miles · Apr 17, 2010
Parking BrakeService Brakes, Hydraulic
CORRODED BRAKE LINES CAUSED THE FAILURE OF BOTH FRONT AND REAR BRAKES AT THE SAME TIME. INOPERABLE REAR EMERGENCY BRAKES PROVIDED NO EMERGENCY STOPPING ABILITY. REPLACED BRAKE LINES. EMERGENCY BRAKE NOT REPAIRED. I UNDERSTAND THAT TRUCKS WITH MANUAL TRANSMISSIONS WERE RECALLED FOR EMERGENCY BRAKE DEFECT CORRECTION, BUT TRUCK…
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CORRODED BRAKE LINES CAUSED THE FAILURE OF BOTH FRONT AND REAR BRAKES AT THE SAME TIME. INOPERABLE REAR EMERGENCY BRAKES PROVIDED NO EMERGENCY STOPPING ABILITY. REPLACED BRAKE LINES. EMERGENCY BRAKE NOT REPAIRED. I UNDERSTAND THAT TRUCKS WITH MANUAL TRANSMISSIONS WERE RECALLED FOR EMERGENCY BRAKE DEFECT CORRECTION, BUT TRUCKS WITH AUTOMATIC TRANSMISSIONS WERE NOT EVENTHOUGH THEY HAVE THE SAME EMERGENCY BRAKE SYSTEM. MY VEHICLE HAS AN AUTOMATIC TRANSMISSION. NOT CERTAIN WHEN EMERGENCY BRAKES BECAME INOPERABLE, BUT MY GUESS IS AROUND 2004 OR 2005, WITH 60K TO70K MILES. BRAKE LINE RUPTURE WAS IN 2009 AT 156K MILES. *TR
NHTSA ODI #10326128
10,000 miles · Apr 29, 2009
Parking Brake
02 SILVERADO, PARK BRAKE SHOE IS NOT HELD IN PLACE SECURELY AND MOVES AROUND IN THE HUB AT ANY BUMP IN THE ROAD, ESPECIALLY AT LOW SPEEDS. BECAUSE THE BRAKE LEVERS ARE INVERTED, THE DRIVER SIDE BRAKE WILL LOCK UP WHEN HITTING A POT HOLE IN MY DRIVE WAY DAILY. THIS IS NOT THE REAR END FREEZING UP OR TRANSMISSION MALFUNCTION. ON…
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02 SILVERADO, PARK BRAKE SHOE IS NOT HELD IN PLACE SECURELY AND MOVES AROUND IN THE HUB AT ANY BUMP IN THE ROAD, ESPECIALLY AT LOW SPEEDS. BECAUSE THE BRAKE LEVERS ARE INVERTED, THE DRIVER SIDE BRAKE WILL LOCK UP WHEN HITTING A POT HOLE IN MY DRIVE WAY DAILY. THIS IS NOT THE REAR END FREEZING UP OR TRANSMISSION MALFUNCTION. ONE TIRE LOCKS UP AND THE OTHER SPINS EXCESSIVELY. FOR PROOF, JUST TAKE THE HUB OFF AND LOOK AT HOW THE SHOE IS NOT HELD IN PLACE. A CORRECTIVE PART NEEDS TO BE ADDED , HOPEFULLY NOBODY HAS BEEN INJURED BECAUSE OF THIS. THIS WAS MENTIONED TO THE CHEVY DEALER BY MYSELF IN 2003 AND IF I WOULD HAVE KNOWN HOW TO CONTACT YOU BACK THEN, I WOULD HAVE ASAP. *TR
NHTSA ODI #10267263
19,000 miles · Feb 4, 2009
Parking BrakeService Brakes, HydraulicUnknown Or Other
I AM WRITING REGARDING THE VERY POOR BRAKE LIFE AND PERFORMANCE FAILURE ON MY 2002 CHEVROLET PICKUP, 1500 SERIES PURCHASED NEW FROM A LOCAL DEALER. AT 19,500 MILES THE BRAKES WERE DIAGNOSED (ON 1-15-09) BY THE DEALER AS NEEDING COMPLETE OVERHAUL, A COST OF $571.00. THE PROBLEM WAS NOTICEABLE AT 12,000 MILES BY EXCESSIVE PEDAL T…
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I AM WRITING REGARDING THE VERY POOR BRAKE LIFE AND PERFORMANCE FAILURE ON MY 2002 CHEVROLET PICKUP, 1500 SERIES PURCHASED NEW FROM A LOCAL DEALER. AT 19,500 MILES THE BRAKES WERE DIAGNOSED (ON 1-15-09) BY THE DEALER AS NEEDING COMPLETE OVERHAUL, A COST OF $571.00. THE PROBLEM WAS NOTICEABLE AT 12,000 MILES BY EXCESSIVE PEDAL TRAVEL, THE SAME WITH THE EMERGENCY BRAKE. NO ACTION WAS TAKEN OR NOTICE OF BRAKE WEAR INDICATED BY THE DEALER WHEN NOTIFIED. BY 17,000 MILES THE BRAKES WERE NOISY AND WHEN INFORMED THE DEALER SAID MY REAR ROTORS WERE RUSTY FROM LOW USE AND I SHOULD CONSIDER A REPLACEMENT. UNABLE TO BELIEVE MY BRAKES WERE WORN OUT ( I'M 65 YEARS OLD AND HAVE NEVER HAD A VEHICLES' BRAKES WEAR OUT ANY WHERE NEAR THIS MILEAGE) I DECIDED TO DRIVE IT MORE OFTEN TO REMOVE THE RUST. DURING THIS TIME MY TEENAGE DAUGHTER, WITH ME AS A PASSENGER, NEARLY HIT A SEMI UNEXPECTEDLY BLOCKING OUR LANE, BECAUSE THE BRAKES WORKED VERY POORLY. THIS WAS IN THE FALL OF 08. IN NOVEMBER AND DECEMBER 08, I WROTE TO THE DEALER REQUESTING COST SHARING FOR BRAKE REPAIR. NO RESPONSE.. THEN, IN LATE DECEMBER I WROTE TO GM , CUSTOMER AFFAIRS, IN DETROIT,MI. REQUESTING COST SHARING DUE TO PREMATURE WEAROUT. THEY REQUESTED THE COST ESTIMATE ON 1-15-09 AND THEN REFUSED OR DENIED ANY ASSISTANCE BASED ON "LOW USE". I AM WELL AWARE OF A BROAD PROBLEM WITH EARLY BRAKE WEAR ON 2001 TO 2004 (ADMITTED BY SERVICE REPS AT THE DEALER) LIGHT DUTY GM TRUCKS, MOSTLY DUE TO RUSTY ROTORS, ESPECIALLY ON THE REARS. THIS IS FURTHER EVIDENCED BY THE DEALER ESTIMATE WHICH SHOWED EXPENSIVE REPLACEMENT "CERAMIC" PADS, WHICH WERE NOT ORIGINAL EQUIPMENT. THE DEALER ALSO ADMITTED THAT AT ONE TIME THEY TRIED TO ADD A "KIT" TO SHIELD THE REAR ROTORS FROM SALT SPRAY. THESE ARE ALL EVIDENCE OF DEFECTIVE PARTS, SOMETHING THAT SHOULD BE COVERED BY WARRANTY REGARDLESS OF THE VEHICLES AGE OR FREQUENCY OF USE. OR COVERED BY A RECALL. YOUR WEBSITE SHOWS THOUSANDS OF COMPLAINTS ON THIS ITEM. PLEASE ADD MINE. *TR
NHTSA ODI #10257475
40,000 miles · Nov 21, 2007
Parking Brake
I DON'T UNDERSTAND WHY YOU HAVE A RECALL ON THE PARKING BRAKE FOR A MANUAL TRANS ONLY WHEN IT IS JUST AS IMPORTANT TO HAVE ONE ON A AUTOMATIC TRANS. IF YOU PARK YOUR TRUCK ON A STEEP INCLINE AND CAN'T USE THE PARKING BRAKE ALONG WITH THE TRANSMISSION, THEN IT IS VIRTUALLY IMPOSSIBLE TO GET IT OUT OF PARK AND YOU CAN'T TELL ME TH…
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I DON'T UNDERSTAND WHY YOU HAVE A RECALL ON THE PARKING BRAKE FOR A MANUAL TRANS ONLY WHEN IT IS JUST AS IMPORTANT TO HAVE ONE ON A AUTOMATIC TRANS. IF YOU PARK YOUR TRUCK ON A STEEP INCLINE AND CAN'T USE THE PARKING BRAKE ALONG WITH THE TRANSMISSION, THEN IT IS VIRTUALLY IMPOSSIBLE TO GET IT OUT OF PARK AND YOU CAN'T TELL ME THAT DOESN'T DO DAMAGE TO THE TRANSMISSION....IT TAKES THE SAME PART TO FIX THE PARKING BRAKE IN A AUTOMATIC TRANS AS IT DOES IN A MANUAL TRANS.. VERY DISAPPOINTED!!!!! *TR
NHTSA ODI #10209649
80,605 miles · Sep 12, 2007
Parking Brake
PARKING BRAKE PEDAL WENT TO THE FLOOR AND DID NOT HOLD.
NHTSA ODI #10202806
Mileage unknown · Jul 16, 2007
Parking BrakeService Brakes, Hydraulic
CHEVROLET SILVERADO ABS FAILURE , LOSS OF BRAKES WHEN TRAVELING OVER SMALL BUMPS OR WET ROADS. ALSO LOSS OF PARKING BRAKE. DEALER SAID IT WAS ONLY ON MANUAL TRANSMISSION TRUCKS THAT HAD THE FAILURE...THIS IS NOT TRUE. ALL TRUCKS.*AK
NHTSA ODI #10196539
85,000 miles · Apr 4, 2007
Parking Brake
TL*- THE CONTACT STATED THAT THE 2002 CHEVROLET SILVERADO 1500, RECEIVED RECALL 05V161000 FOR THE PARKING BRAKES. HE TOOK THE VEHICLE TO THE DEALERSHIP FOR THE RECALL REPAIRS ON 12/2006. SIX DAYS AFTER THE REPAIRS THE WEATHER BECAME COLD ABOUT 30 DEGREES, AND THE EMERGENCY BRAKE BECAME STUCK. HE DID GET THE EMERGENCY BRAKE TO …
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TL*- THE CONTACT STATED THAT THE 2002 CHEVROLET SILVERADO 1500, RECEIVED RECALL 05V161000 FOR THE PARKING BRAKES. HE TOOK THE VEHICLE TO THE DEALERSHIP FOR THE RECALL REPAIRS ON 12/2006. SIX DAYS AFTER THE REPAIRS THE WEATHER BECAME COLD ABOUT 30 DEGREES, AND THE EMERGENCY BRAKE BECAME STUCK. HE DID GET THE EMERGENCY BRAKE TO RELEASE AND DROVE THE VEHICLE 3 MILES WHEN BEGAN SMELLING SOMETHING THAT SMELLED LIKE THE BRAKES BURNING. HE GOT OUT OF THE VEHICLE AND NOTICED THAT THE PASSENGER'S SIDE REAR WHEEL WAS EXTREMELY HOT. HE LET THE VEHICLE COOL DOWN ,AND TRIED TO JAR THE EMERGENCY BRAKE. THEN HE CALLED THE DEALERSHIP, AND THEY REMINDED HIM THAT IN EXTREMELY COLD WEATHER HE SHOULDN'T USE THE EMERGENCY BRAKE. THE BRAKES WERE REPAIRED. THE DEALERSHIP DIDN'T CHARGE HIM FOR THE REPAIR, THEY INFORMED HIM THE RECALL REPAIR HAD NOT BEEN DONE PROPERLY, AND THAT THE EMERGENCY BRAKE WAS ADJUSTED TOO TIGHT. THE CONTACT STATED THAT AFTER THIS REPAIR HE DROVE THE VEHICLE FOR ABOUT A WEEK, AND THE EMERGENCY BRAKE FROZE UP AGAIN. HE FILED A COMPLAINT WITH THE MANUFACTURER, AND WA GIVEN A CASE#71-461637111. THE CONTACT STATED THAT HE HAD TO SELL THE VEHICLE BECAUSE COULDN'T TAKE THE CHANCE WITH THE EMERGENCY BRAKE ON THE ROAD, AND SO HE TRADED THE VEHICLE IN. THE CONTACT HAD ALL THE INFORMATION FOR THIS VEHICLE. THE FAILURE MILEAGE WAS 85,000 MILES.*AK
NHTSA ODI #10187042
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.