NHTSA owner reports · September 18, 2026 snapshot.
Vehicle Speed Control complaints
14 reportsClear category filterMileage unknown · Nov 9, 2022
Air BagsUnknown Or OtherVehicle Speed ControlCrashInjury
My husband just had a wreck last night. His gas pedals got stuck causing him to lose control of the truck and the truck to spend around in the middle of the street. It hit another car and a telephone pole before jumping the curb and landing in a field. THE AIR BAGS DID NOT DEPLOY ON ANY PARTS OF THE TRUCK THAT WAS IMPACTED BY TH…
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My husband just had a wreck last night. His gas pedals got stuck causing him to lose control of the truck and the truck to spend around in the middle of the street. It hit another car and a telephone pole before jumping the curb and landing in a field. THE AIR BAGS DID NOT DEPLOY ON ANY PARTS OF THE TRUCK THAT WAS IMPACTED BY THE WRECK. Both sides of the truck are completely smashed in and both windshields have been busted out. My husband actually came of the windshield of the truck where the Airbag should have deployed.
NHTSA ODI #11492892
62,000 miles · Dec 9, 2016
Vehicle Speed Control
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING VARIOUS SPEEDS AND DEPRESSING THE BRAKE PEDAL, THE VEHICLE ACCELERATED. THE FAILURE WAS PERSISTENT. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 62,000.
NHTSA ODI #10934152
173,526 miles · Aug 9, 2015
Service BrakesVehicle Speed Control
MY ANTI-LOCK BRAKES WOULD KICK IN WHEN I WOULD SLOW DOWN ALMOST TO A STOP. THEY WOULD NOT LET ME STOP. NO WARNING LIGHTS WERE ON AND MY BRAKE SYSTEM HAS BEEN WORKING GREAT. IS THERE A RECALL ON THIS PROBLEM, SEEMS TO HAPPEN TO A LOT OF CHEVY OWNERS?
NHTSA ODI #10747310
203,000 miles · Oct 24, 2010
Service Brakes, HydraulicVehicle Speed ControlCrash
REAR LEFT SIDE BRAKELINE FAILURE DUE TO RUST ON 2000 CHEVY SILVERADO 1500, ON INSPECTION RUST NOTICED ON ALL BRAKE LINES. MANY SIMILAR REPORTS FROM CONSUMERS ON SAME COMPLAINT. NEWYORK BASED VEHICLE, TRUCK ALWAYS WASHED UNDERCARRIAGE TO REMOVE SALT FROM ROADWAY IN WINTER MONTHS. ALL LINES NEED REPLACEMENT...DANGEROUS CONDITION!!…
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REAR LEFT SIDE BRAKELINE FAILURE DUE TO RUST ON 2000 CHEVY SILVERADO 1500, ON INSPECTION RUST NOTICED ON ALL BRAKE LINES. MANY SIMILAR REPORTS FROM CONSUMERS ON SAME COMPLAINT. NEWYORK BASED VEHICLE, TRUCK ALWAYS WASHED UNDERCARRIAGE TO REMOVE SALT FROM ROADWAY IN WINTER MONTHS. ALL LINES NEED REPLACEMENT...DANGEROUS CONDITION!!!!! PLEASE HAVE YOUR VEHICLE INSPECTED FOR YOUR SAFETY. NO DAMAGE , CRASHED INTO CURB IN PARKING LOT. I STRONGLY BELIEVE THESE VEHICLES SHOULD ALL BE REMOVED FROM ROADS AND FIXED AT GM EXPENSE. NHTSA HAS RESPONSIBILITY TO ENFORCE SAFETY RECALLS BUT HAS YET TAKEN DUE TO INFLUENCE OF OUR "NATIONALIZED CAR MANUFACTURING COMPANY". DUE TO THE GOVERNMENT OWNERSHIP OF THIS COMPANY, ANY FAILURE TO ACT RESPONSIBLY ON THIS MATTER SHOULD BE SEEN AS "WANTON NEGLECT" BY THIS AGENCY FOR THE SAFETY OF THE PUBLIC AT LARGE & NOT JUST THESE VEHICLE OWNERS. I FULLY INTEND TO INFORM MY LOCAL REP. TO THE FAILURE OF THIS AGENCY TO TAKE SERIOUSLY THE CONSEQUENCES OF CONTINUING TO ALLOW 1.3 MILLION TRUCKS WITH KNOWN SERIOUS SAFETY ISSUES TO REMAIN OPERATING ON OUR ROADWAYS. *TR
NHTSA ODI #10362126
165,000 miles · Mar 11, 2010
Service Brakes, HydraulicVehicle Speed ControlCrash
ABS FAILING AT LOW SPEEDS. HAVE CLEANED BOTH SENSORS, CHECKED VOLTAGE AND THE PROBLEM STILL OCCURS. I HIT MY GATE AT THE HOUSE WHERE I PARK THE TRUCK BECAUSE THE TRUCK WOULD NOT STOP AND RAN FORWARD. *TR
NHTSA ODI #10318930
Mileage unknown · Mar 12, 2009
Vehicle Speed ControlCrashInjury
MY FATHER RECENTLY DIED AS A RESULT OF INJURIES SUFFERED IN A ONE VEHICLE ACCIDENT. HE WAS DRIVING HIS 2000 CHEVROLET C1500 PICKUP TRUCK. HE INDICATED THAT THE THROTTLE ON HIS TRUCK STUCK AND HE COULD NOT STOP THE VEHICLE. AS A RESULT, HE RAN OFF THE ROAD, HIT A TREE TOTALING THE VEHICLE. *TR
NHTSA ODI #10261622
99,000 miles · Feb 29, 2008
Service Brakes, HydraulicVehicle Speed ControlCrashFire
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 15 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THE VEHICLE CONTINUED TO ACCELERATE. HE WAS ABLE TO STOP THE VEHICLE AFTER 20 SECONDS OF APPLYING PRESSURE TO THE BRAKES. WHILE ATTEMPTING TO PARK THE VEHICLE IN THE DRIVEWAY, IT DRAMATICALLY BEG…
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TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 15 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THE VEHICLE CONTINUED TO ACCELERATE. HE WAS ABLE TO STOP THE VEHICLE AFTER 20 SECONDS OF APPLYING PRESSURE TO THE BRAKES. WHILE ATTEMPTING TO PARK THE VEHICLE IN THE DRIVEWAY, IT DRAMATICALLY BEGAN TO ACCELERATE. THE CONTACT APPLIED PRESSURE TO THE BRAKES, BUT THE VEHICLE CONTINUED TO ACCELERATE. SMOKE APPEARED AND THE VEHICLE LUNGED FORWARD, CAUSING HIM TO CRASH INTO THE GARAGE. THE VEHICLE WOULD NOT STOP UNTIL THE POWER WAS COMPLETELY SHUT OFF. THE CONTACT HAS PICTURES. THE DEALER HAS NOT BEEN NOTIFIED. THE FAILURE AND CURRENT MILEAGES WERE 99,000.
NHTSA ODI #10219684
30,000 miles · Sep 13, 2006
Vehicle Speed Control
THIS IS IN REGARDS TO NHTSA ACTION NUMBER: EA02015. THIS HAS BEEN AN ONGOING PROBLEM WITH THE ACCEL PEDAL GETTING STUCK. DEALER SAID IT IS NORMAL WHICH IT IS NOT. HAPPENS RANDOMLY WHEN MANEUVERING AT LOWER SPEEDS PARKING LOTS/STREETS ETC. YOU HAVE TO GIVE THE PEDAL A FIRM PUSH TO GET IT UNSTUCK AND THE TRUCK LUNGES FWD. SOMEONE…
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THIS IS IN REGARDS TO NHTSA ACTION NUMBER: EA02015. THIS HAS BEEN AN ONGOING PROBLEM WITH THE ACCEL PEDAL GETTING STUCK. DEALER SAID IT IS NORMAL WHICH IT IS NOT. HAPPENS RANDOMLY WHEN MANEUVERING AT LOWER SPEEDS PARKING LOTS/STREETS ETC. YOU HAVE TO GIVE THE PEDAL A FIRM PUSH TO GET IT UNSTUCK AND THE TRUCK LUNGES FWD. SOMEONE IS GOING TO GET HURT BY THIS. I HAVE SEEN MANY MANY COMPLAINTS OF THIS ON THE BOARDS/CHAT ROOMS. I WAS WITH MY YOUNG DAUGHTER DRIVING AND THIS OCCURRED AND SHE PULLED OUT AND PEDAL/THROTTLE GOT STUCK. SHE GAVE GAS AND LOST CONTROL OF VEHICLE NARROWLY MISSING SEMI. THIS IS A MAJOR PROBLEM AND GM NEEDS TO ADDRESS. MY INDEPENDENT MECHANIC SAYS THIS IS VERY COMMON ON THIS YRS CHEVY SILVERADOS AND NO FIX EXISTS. *CBC *NM
NHTSA ODI #10168207
Mileage unknown · Aug 18, 2006
Vehicle Speed Control
THIS IS IN REGARDS TO NHTSA ACTION NUMBER: EA02015. I DID NOT KNOW OF THIS SITE AND OF SUCH DEFECT INVESTIGATIONS, BUT ALTHOUGH THE MATTER MIGHT BE CLOSED, I MUST STRONGLY URGE YOU TO REOPEN THIS MATTER REGARDLESS OF WHAT GM IS RESPONDING WITH. I HAVE NOTICED IN THE PAST AND PRESENT, THAT THE CONDITION DESCRIBED IN THE NHTSA …
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THIS IS IN REGARDS TO NHTSA ACTION NUMBER: EA02015. I DID NOT KNOW OF THIS SITE AND OF SUCH DEFECT INVESTIGATIONS, BUT ALTHOUGH THE MATTER MIGHT BE CLOSED, I MUST STRONGLY URGE YOU TO REOPEN THIS MATTER REGARDLESS OF WHAT GM IS RESPONDING WITH. I HAVE NOTICED IN THE PAST AND PRESENT, THAT THE CONDITION DESCRIBED IN THE NHTSA ACTION, IS STILL CURRENTLY OCCURRING. I LIVE IN THE SAN FRANCISCO OUTSKIRTS WHERE TEMPERATURES RARELY REACH ABOVE 80 DEGREES F. DURING DAYS WHERE THE TEMPERATURE RISES, THE ACCELERATOR PEDAL DOES, "STICK" WHERE YOU HAVE TO GIVE IT A GOOD FIRM PUSH WHICH CAUSES THE VEHICLE TO LUNGE FORWARD. ALSO, WHEN THE VEHICLE IS ON A SLOPE, IT ALSO DOES SEEM TO, "STICK" OFTEN. FOR PURPOSES OF THIS STATEMENT, I WILL NOT PUT A SPECIFIC INCIDENT DATE BECAUSE IT IS ONGOING AND WILL LIST TODAY'S DATE FOR PURPOSES OF FUTURE REFERENCE. THANK YOU. *NM
NHTSA ODI #10165901
48,000 miles · Jun 26, 2003
Vehicle Speed Control
THE CONSUMER EXPERIENCED THROTTLE STICKING. THE VEHICLE WAS TAKEN TO THE DEALER, WHO STATED THERE WAS NO PROBLEM. *TS *SCC *JB
NHTSA ODI #8022365
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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