NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
26 reportsClear category filter230,000 miles · Sep 28, 2018
Power TrainSteering
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE THE VEHICLE WAS PARKED, THE CONTACT ATTEMPTED TO ACCELERATE AND LOST THE ABILITY TO STEER THE VEHICLE. THE BOLTS THAT HELD THE GEAR BOX TO THE FRAME HAD BEEN SHEARED OFF. THE DEALER (COOPER CHEVROLET BUICK, 1300 S QUINTARD AVE, ANNISTON, AL 36201, (256) 405-4155) STATED…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE THE VEHICLE WAS PARKED, THE CONTACT ATTEMPTED TO ACCELERATE AND LOST THE ABILITY TO STEER THE VEHICLE. THE BOLTS THAT HELD THE GEAR BOX TO THE FRAME HAD BEEN SHEARED OFF. THE DEALER (COOPER CHEVROLET BUICK, 1300 S QUINTARD AVE, ANNISTON, AL 36201, (256) 405-4155) STATED THAT THE BOLTS LOOKED LIKE THEY WERE TORQUED TOO TIGHTLY. THE DEALER AND MANUFACTURER STATED THAT THE VEHICLE WAS NOT INCLUDED IN A RECALL. THE FAILURE MILEAGE WAS 230,000. *TT UPDATED 12/07/18*JB
NHTSA ODI #11132115
100,000 miles · Aug 24, 2018
Power TrainService Brakes, Hydraulic
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 15 MPH, THE TRANSMISSION MALFUNCTIONED AND THE VEHICLE WOULD NOT PROPERLY ACCELERATE. THE VEHICLE WAS TAKEN TO THE LOCAL INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE TRANSMISSION COMPONENTS IN FIRST GEAR WERE SHATTERED AND THE TRANSMISSION NEEDED TO…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 15 MPH, THE TRANSMISSION MALFUNCTIONED AND THE VEHICLE WOULD NOT PROPERLY ACCELERATE. THE VEHICLE WAS TAKEN TO THE LOCAL INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE TRANSMISSION COMPONENTS IN FIRST GEAR WERE SHATTERED AND THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. ALSO, BRAKE FLUID WAS LEAKING FROM THE VEHICLE. UPON INSPECTION, IT WAS DISCOVERED THAT THE BRAKE LINES WERE RUSTED AND CORRODED. THE BRAKE LINES WERE REPLACED AND THE FAILURE WAS REMEDIED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED AND NO SOLUTION WAS OFFERED. THE FAILURE MILEAGE WAS 100,000.
NHTSA ODI #11122077
107,000 miles · Jan 13, 2015
Fuel/propulsion SystemPower TrainService Brakes
I HAVE HAD RIGHT REAR BRAKE LINE RUST OUT. I HAD FRONT BRAKE LINES RUST OUT. I HAD THE BRAKE LINE TO THE ABS FROM BOOSTER RUST OUT. HAD THE FUEL LINES RUST OUT(LEAKING RAW GAS) HAD OIL LINES FOR AUTOMATIC TRANSMISSION RUST OUT. EACH TIME I WAS LUCKY THAT IT HAPPENED IN THE CITY AT LOW SPEEDS AND NOT WHILE PULLING A TRAILER.I ALS…
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I HAVE HAD RIGHT REAR BRAKE LINE RUST OUT. I HAD FRONT BRAKE LINES RUST OUT. I HAD THE BRAKE LINE TO THE ABS FROM BOOSTER RUST OUT. HAD THE FUEL LINES RUST OUT(LEAKING RAW GAS) HAD OIL LINES FOR AUTOMATIC TRANSMISSION RUST OUT. EACH TIME I WAS LUCKY THAT IT HAPPENED IN THE CITY AT LOW SPEEDS AND NOT WHILE PULLING A TRAILER.I ALSO HAD TROUBLE WITH THE ABS KICKING IN FALSELY AT SLOW SPEEDS(ALSO RUST BUILD UP AT WHEEL SENSOR MOUNTING PLACE. *TR
NHTSA ODI #10672282
100,000 miles · Feb 26, 2014
Power Train
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE FAILED TO SHIFT OUT OF PARK. THE SERVICE ENGINE SOON LIGHT ILLUMINATED IMMEDIATELY AFTER THE FAILURE. THE VEHICLE WAS TAKEN TO A INDEPENDENT MECHANIC, WHO WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURE WAS ALERTED OF THE FAILURE. THE A…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE FAILED TO SHIFT OUT OF PARK. THE SERVICE ENGINE SOON LIGHT ILLUMINATED IMMEDIATELY AFTER THE FAILURE. THE VEHICLE WAS TAKEN TO A INDEPENDENT MECHANIC, WHO WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURE WAS ALERTED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 100,000.
NHTSA ODI #10566173
117,000 miles · Aug 15, 2012
Power Train
WAS IN TRAFFIC WENT TO BACK UP AND HEARD A POP. IT WAS THE TRANSMISSION SUN SHELL GEAR FAILING. (AAMCO TRANSMISSION SAID SO). I WAS ON A HILL SO WHEN FAILED IT ROLLED FORWARD. STOPPED IT JUST IN TIME TO JUST BUMP CAR IN FRONT OF ME. WASN'T ANY VISIBLE DAMAGE SO DIDN'T FILE. HOWEVER I'VE DONE RESEARCH AND THIS IS A COMMON DEFECT …
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WAS IN TRAFFIC WENT TO BACK UP AND HEARD A POP. IT WAS THE TRANSMISSION SUN SHELL GEAR FAILING. (AAMCO TRANSMISSION SAID SO). I WAS ON A HILL SO WHEN FAILED IT ROLLED FORWARD. STOPPED IT JUST IN TIME TO JUST BUMP CAR IN FRONT OF ME. WASN'T ANY VISIBLE DAMAGE SO DIDN'T FILE. HOWEVER I'VE DONE RESEARCH AND THIS IS A COMMON DEFECT ON THESE TRUCKS. IT SHOULD BE RECALLED AS I BELIEVE IT TO BE A SAFETY ISSUE. THANKS. *TR
NHTSA ODI #10470805
45,000 miles · Oct 31, 2008
Power Train
TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT EXPERIENCED DIFFICULTY SHIFTING THE FIRST AND SECOND GEARS OF THE VEHICLE. SHE TOOK THE VEHICLE TO THE DEALER AND THEY REBUILT THE TRANSMISSION. APPROXIMATELY FIFTY THOUSAND MILES LATER, THE FAILURE RECURRED INTERMITTENTLY. THE CONTACT IS IN THE PROCESS OF TAKI…
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TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT EXPERIENCED DIFFICULTY SHIFTING THE FIRST AND SECOND GEARS OF THE VEHICLE. SHE TOOK THE VEHICLE TO THE DEALER AND THEY REBUILT THE TRANSMISSION. APPROXIMATELY FIFTY THOUSAND MILES LATER, THE FAILURE RECURRED INTERMITTENTLY. THE CONTACT IS IN THE PROCESS OF TAKING THE VEHICLE BACK TO THE DEALER. THE FAILURE MILEAGE WAS 45,000 AND CURRENT MILEAGE WAS 110,000.
NHTSA ODI #10247398
140,000 miles · Jun 30, 2008
Power Train
REACTION SUN GEAR SHELL FAILURE CAUSING LOSS OF REVERSE AND OTHER FORWARD GEARS. VERY COMMON PROBLEM WITH THIS PARTICULAR TRANSMISSION. *TR
NHTSA ODI #10232686
61,150 miles · Mar 2, 2007
Power TrainService Brakes, HydraulicStructure
TL*- THE CONTACT STATED THAT THE 1999 CHEVROLET SILVERADO 1550 EXTENDED CAB ANTILOCK BRAKE PUMP CONTINUED TO COME ON AND STAY ON. HE HAD TO DISCONNECT THE ANTILOCK BRAKE PUMP ABOUT ONE MONTH AFTER HE PURCHASED THE VEHICLE. THE CONTACT STATED THAT THERE WAS RECALL O5V379000 FOR THE SERVICE BRAKES, HYDRAULIC: ANTILOCK. HE STA…
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TL*- THE CONTACT STATED THAT THE 1999 CHEVROLET SILVERADO 1550 EXTENDED CAB ANTILOCK BRAKE PUMP CONTINUED TO COME ON AND STAY ON. HE HAD TO DISCONNECT THE ANTILOCK BRAKE PUMP ABOUT ONE MONTH AFTER HE PURCHASED THE VEHICLE. THE CONTACT STATED THAT THERE WAS RECALL O5V379000 FOR THE SERVICE BRAKES, HYDRAULIC: ANTILOCK. HE STATED THAT THE RECALL WAS REPAIRED ABOUT SIX MONTHS AGO, THE PUMP ALREADY FAILED PRIOR TO RECALL. THE FAILURE MILEAGE WAS 61,150, AND THE CURRENT MILEAGE WAS 135,000.*AK THE 4 WHEEL DRIVE LIGHT STAYS ILLUMINATED AND THERE WAS A LEAK COMING FROM THE DRIVERS DOOR. UPDATE 05/04/07*TR
NHTSA ODI #10184001
100,000 miles · Dec 8, 2006
Power Train
DT*: THE CONTACT STATED THE TRANSFER CASE FRACTURED. LESS THAN A YEAR LATER, THE TRANSFER CASE FRACTURED AGAIN. AFTER THE VEHICLE WAS REPAIRED, THE DIFFERENTIAL FAILED. THE SALES/SERVICE DEALER WAS NOTIFIED. THE MANUFACTURER WAS NOT ALERTED.
NHTSA ODI #10175587
108,800 miles · Aug 29, 2006
Engine And Engine CoolingExterior LightingPower TrainInjury
DT*: THE CONTACT STATED WHILE STOPPED AT AN INTERSECTION, THE STEERING LOCKED UP, AND THE STEERING WHEEL COULD NOT BE TURNED TO THE LEFT. THIS WAS ACCOMPANIED BY THE THE SOUND OF HYDRAULIC RESISTANCE. THE VEHICLE WAS NOT TAKEN IN FOR SERVICE. SECOND, A PIECE OF PLASTIC FELL OFF THE INTERIOR OF THE VEHICLE. CAUSING THE DRIVE…
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DT*: THE CONTACT STATED WHILE STOPPED AT AN INTERSECTION, THE STEERING LOCKED UP, AND THE STEERING WHEEL COULD NOT BE TURNED TO THE LEFT. THIS WAS ACCOMPANIED BY THE THE SOUND OF HYDRAULIC RESISTANCE. THE VEHICLE WAS NOT TAKEN IN FOR SERVICE. SECOND, A PIECE OF PLASTIC FELL OFF THE INTERIOR OF THE VEHICLE. CAUSING THE DRIVER SEAT TO SLIDE FREELY ON THE ADJUSTER TRACK WHEN THE CONTACT SAT IN THE SEAT. THE VEHICLE WAS TAKEN TO A SERVICE DEALER WHO WAS UNABLE TO DETERMINE THE PROBLEM. THIRD, THE CONTACT REPLACED THE DAYTIME RUNNING LIGHTS TWICE. THE LIGHTS ONLY WORKED FOR 3 TO 6 MONTHS AT A TIME BEFORE HAVING TO BE REPLACED. THE LIGHTS WERE NOT ADDRESSED BY A DEALER OR A PRIVATE REPAIR SHOP. FOURTH, THE HEADLAMP SWITCH CONSTANTLY BECAME EXCESSIVELY HOT DURING OPERATION OF THE HEADLAMPS. THE VEHICLE WAS NOT TAKEN IN FOR INSPECTION OF THE SWITCH. FIFTH, WHEN THE 4-WHEEL DRIVE MODE WAS ENGAGED, THE WHEELS DID NOT TURN INDEPENDENTLY, CAUSING INCREASED EFFORT IN TURNING THE VEHICLE. THIS PROBLEM WAS NOT INSPECTED. SIXTH, THE STARTER FAILED WHILE ATTEMPTING TO START THE VEHICLE. UPON INSPECTION OF THE STARTER, IT WAS NOTICED THAT THE HOUSING WAS CRACKED. A PRIVATE MECHANIC WAS CONSULTED, WHO NOTIFIED THE CONTACT THAT THIS WAS A COMMON PROBLEM. FINALLY, THE PASSENGER SEAT BELT DID NOT FEED ENOUGH TO ALLOW FOR PASSENGER COMFORT WHICH CAUSED THE PASSENGER TO BE ABRAISED BY THE BELT. THE INERTIAL CONTROL SEEMED TO BE INTERMITTENT. THE SEAT BELTS WERE NOT INSPECTED BY EITHER A PRIVATE REPAIR SHOP OR A SERVICE DEALER.
NHTSA ODI #10166856
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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