NHTSA owner reports · September 18, 2026 snapshot.
Seats complaints
10 reportsClear category filter81,316 miles · Jun 1, 2016
Seats
TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE COMING TO A STOP, THE LATCH THAT HELD THE DRIVER SEAT IN PLACE FAILED. THE CONTACT STATED THAT THE SEAT WOULD SLIDE FORWARD AND BACK. THE VEHICLE WAS NOT DIAGNOSED OR REPLACED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 81…
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TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE COMING TO A STOP, THE LATCH THAT HELD THE DRIVER SEAT IN PLACE FAILED. THE CONTACT STATED THAT THE SEAT WOULD SLIDE FORWARD AND BACK. THE VEHICLE WAS NOT DIAGNOSED OR REPLACED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 81,316.
NHTSA ODI #10871915
135,000 miles · Feb 26, 2013
Seats
AFTER LETTING MY SON EXIT ON THE DRIVERS SIDE, TRIED TO RETURN SEAT TO NORMAL POSITION AND COULD NOT. AFTER STRUGGLING WITH IT, A PLASTIC PART IN THE SEAT TRACK BROKE AND THEN SEAT WOULD NOT STAY IN PLACE AT ALL. CAREFULLY DROVE TO NEAREST GM DEALERSHIP AND WAS TOLD PART WAS NOT IN STOCK, WOULD TAKE UP TO A WEEK AND WAS VERY EXP…
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AFTER LETTING MY SON EXIT ON THE DRIVERS SIDE, TRIED TO RETURN SEAT TO NORMAL POSITION AND COULD NOT. AFTER STRUGGLING WITH IT, A PLASTIC PART IN THE SEAT TRACK BROKE AND THEN SEAT WOULD NOT STAY IN PLACE AT ALL. CAREFULLY DROVE TO NEAREST GM DEALERSHIP AND WAS TOLD PART WAS NOT IN STOCK, WOULD TAKE UP TO A WEEK AND WAS VERY EXPENSIVE. I WAS ON VACATION, SO COULD NOT WAIT, TRIED SALVAGE YARDS, NO LUCK. HAD UPHOLSTERY SHOP DRIVE LARGE SCREW INTO TRACK TO LOCK IT IN PLACE AND HAVE NOT BEEN ABLE TO LOCATE A PART. *TR
NHTSA ODI #10500500
3,700 miles · Jan 28, 2012
Seats
THE SEAT LATCHES THAT HOLD THE SEATS IN PLACE WHICH ARE MADE OF PLASTIC BREAK AND THE SEAT SLIDES BACK AND FORTH (ALL THE WAY BACK AND ALL THE WAY FORWARD TOWARD THE STEERING WHEEL). THE LATCHES ON MY 1999 GMC SIERRA PICK UP TRUCK BROKE IN 2000 WHEN THE TRUCK ONLY HAD ABOUT 3700 MILES ON IT. GMC CORP. HAS DENIED THE PROBLEM AND …
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THE SEAT LATCHES THAT HOLD THE SEATS IN PLACE WHICH ARE MADE OF PLASTIC BREAK AND THE SEAT SLIDES BACK AND FORTH (ALL THE WAY BACK AND ALL THE WAY FORWARD TOWARD THE STEERING WHEEL). THE LATCHES ON MY 1999 GMC SIERRA PICK UP TRUCK BROKE IN 2000 WHEN THE TRUCK ONLY HAD ABOUT 3700 MILES ON IT. GMC CORP. HAS DENIED THE PROBLEM AND REFUSES TO TALK TO ME ABOUT FIXING THE PROBLEM. IT IS A REALLY BAD SAFETY HAZARD SINCE THEY COULD BREAK AT ANY TIME AND WOULD SLAM YOU FORWARD IF YOU STEP ON THE BRAKES AND BACKWARD WHEN YOU ACCELERATE. I ASK THE DEALER ABOUT FIXING IT BUT THEY REFUSED, SAYING IT WOULD COST $600.00 OR MORE JUST BUY THE FRAME FOR THE SEAT. SO IT HAS BEEN TIED WITH BAILING WIRE EVER SINCE TO HOLD IT IN PLACE. IS THERE A RECALL? *TR
NHTSA ODI #10445691
107,000 miles · Jan 20, 2012
Seats
TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT THE LOCKING MECHANISM ON THE DRIVER SIDE SEAT FRACTURED AND AS A RESULT, THE SEAT WOULD SLIDE BACK AND FORTH ABNORMALLY. THE VEHICLE WAS NOT TAKEN TO THE DEALER AND THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AN…
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TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT THE LOCKING MECHANISM ON THE DRIVER SIDE SEAT FRACTURED AND AS A RESULT, THE SEAT WOULD SLIDE BACK AND FORTH ABNORMALLY. THE VEHICLE WAS NOT TAKEN TO THE DEALER AND THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGE WAS 107,000.
NHTSA ODI #10444700
56,000 miles · Jul 6, 2010
Seats
I AM EXPERIENCING THE SAME PROBLEM AS WAS REPORTED BELOW BY OTHERS. THE DRIVERS SEAT SLIDES FORWARD AND BACKWARD NEARLY 2 INCHES WHILE DRIVING. THE TRUCK ONLY HAS 56,000 MILES ON IT. MAKE : GMC MODEL : SIERRA 1500 YEAR : 1999 CRASH : NO FIRE : NO NUMBER OF INJURIES: 0 ODI ID NUMBER : 10191166 DATE OF FAILURE: MAY 18, 20…
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I AM EXPERIENCING THE SAME PROBLEM AS WAS REPORTED BELOW BY OTHERS. THE DRIVERS SEAT SLIDES FORWARD AND BACKWARD NEARLY 2 INCHES WHILE DRIVING. THE TRUCK ONLY HAS 56,000 MILES ON IT. MAKE : GMC MODEL : SIERRA 1500 YEAR : 1999 CRASH : NO FIRE : NO NUMBER OF INJURIES: 0 ODI ID NUMBER : 10191166 DATE OF FAILURE: MAY 18, 2006 COMPONENT: SEATS. *TR
NHTSA ODI #10341686
55,350 miles · Jun 17, 2010
Seats
1999 GMC SIERRA ABOUT 55,000MILES: MANUAL SEAT DRIVERS SIDE: THE DEVICE THAT PREVENTS THE SEAT FROM SLIDING BACK AND FORTH FREELY ON ITS TRACKS HAS FAILED. NOW THE SEAT IS ALL THE WAY BACK EXCEPT UNDER BRAKING, WHEN IT ABRUPTLY SLIDES ALL THE WAY TO THE STEERING WHEEL. NO MATTER HOW ALERT YOU TRY TO BE, EVENTUALLY SOME MANEUVER …
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1999 GMC SIERRA ABOUT 55,000MILES: MANUAL SEAT DRIVERS SIDE: THE DEVICE THAT PREVENTS THE SEAT FROM SLIDING BACK AND FORTH FREELY ON ITS TRACKS HAS FAILED. NOW THE SEAT IS ALL THE WAY BACK EXCEPT UNDER BRAKING, WHEN IT ABRUPTLY SLIDES ALL THE WAY TO THE STEERING WHEEL. NO MATTER HOW ALERT YOU TRY TO BE, EVENTUALLY SOME MANEUVER WILL BE NEEDED WITHOUT TIME TO BRACE YOURSELF, YOUR FOOT WILL MASH THE BRAKE UNCONTROLLABLY TO THE FLOOR AS THE SEAT RUSHES FORWARD, YOUR ARMS WON'T BE ABLE TO STEER AS YOUR BODY RUSHES FORWARD INTO THE STEERING WHEEL. A HANDFUL OF BROKEN NYLON PIECES AND ZINC CASTING PIECES AND A SPRING WERE RECOVERED FROM THE STARBOARD TRACK. DEALER DOESN'T HAVE A REPLACEMENT FOR JUST THE BROKEN STUFF, THE TRACK ASSEMBLY IS INSANELY EXPENSIVE ($500 FOR BOTH SIDES) NOT COUNTING LABOR. NO JUNKYARD I CAN FIND HAS THE PART, THIS MODEL SEAT WAS ONLY MADE IN 1999. I FOUND ABOUT A DOZEN COMPLAINTS ONLINE ABOUT THIS WHEN I DID A GOOGLE SEARCH. *TR
NHTSA ODI #10336781
10,000 miles · Jul 31, 2009
Seats
1999 GMC SIERRA EXTENDED CAB PROBLEM: FOR THE SECOND TIME THE CHEAP PIECE OF PLASTIC LOCKING MECHANISM FOR THE DRIVERS SIDE SEAT FAILED, OR RATHER BROKE IN HALF AGAIN. NOT ONLY WILL I HAVE TO PAY FOR IT TO BE SERVICED AGAIN, THE STUPID, SICK PIECE OF ENGINEERING DESIGNED IS A HUGE SAFETY HAZARD. THIS IS WHY PEOPLE DON'T BUY AM…
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1999 GMC SIERRA EXTENDED CAB PROBLEM: FOR THE SECOND TIME THE CHEAP PIECE OF PLASTIC LOCKING MECHANISM FOR THE DRIVERS SIDE SEAT FAILED, OR RATHER BROKE IN HALF AGAIN. NOT ONLY WILL I HAVE TO PAY FOR IT TO BE SERVICED AGAIN, THE STUPID, SICK PIECE OF ENGINEERING DESIGNED IS A HUGE SAFETY HAZARD. THIS IS WHY PEOPLE DON'T BUY AMERICAN ANYMORE. IT MUST BE RECALLED OR PEOPLE WILL DIE. *TR
NHTSA ODI #10278951
80,000 miles · May 18, 2007
Seats
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT THE DRIVER'S SEAT IS LOOSE. WHEN HE DEPRESSES THE BRAKE PEDAL, THE SEAT MOVES FORWARD. WHEN HE DEPRESSES THE ACCELERATOR PEDAL, THE SEAT MOVES BACKWARDS. HE FIRST NOTICED THE FAILURE APPROXIMATELY ONE YEAR AGO AND THE FAILURE HAS SINCE WORSENED. THE DEALER …
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT THE DRIVER'S SEAT IS LOOSE. WHEN HE DEPRESSES THE BRAKE PEDAL, THE SEAT MOVES FORWARD. WHEN HE DEPRESSES THE ACCELERATOR PEDAL, THE SEAT MOVES BACKWARDS. HE FIRST NOTICED THE FAILURE APPROXIMATELY ONE YEAR AGO AND THE FAILURE HAS SINCE WORSENED. THE DEALER STATED THAT THE CONTACT WOULD HAVE TO PAY FOR THE REPAIR BECAUSE THERE IS NO RECALL FOR THE FAILURE. THE ENGINE SIZE WAS UNKNOWN. THE CURRENT MILEAGE IS 93,000 AND FAILURE MILEAGE WAS 80,000.
NHTSA ODI #10191166
15,000 miles · Apr 19, 2007
Seat BeltsSeats
TL*THE CONTACT OWNS A 1999 GMC SIERRA EXTENDED CAB. HE RECEIVED A RECALL NOTICE FROM THE MANUFACTURER TO REPAIR AND REPLACE THE DRIVER AND PASSENGER SIDE SEAT BELT. THE RECALL REPAIR WAS COMPLETED 06/21/06 AND STATED THAT THE SEAT BELTS WORKED FOR TWO MONTHS. ON 08/2006 THE DRIVER SIDE SEAT BELT FAILED. THE CONTACT IS UNABLE…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA EXTENDED CAB. HE RECEIVED A RECALL NOTICE FROM THE MANUFACTURER TO REPAIR AND REPLACE THE DRIVER AND PASSENGER SIDE SEAT BELT. THE RECALL REPAIR WAS COMPLETED 06/21/06 AND STATED THAT THE SEAT BELTS WORKED FOR TWO MONTHS. ON 08/2006 THE DRIVER SIDE SEAT BELT FAILED. THE CONTACT IS UNABLE TO LOCK THE SEAT BELT DUE TO IT BEING LODGED INTO THE SEAT CUSHION. TWO MONTHS AFTER THE SEAT BELT STOPPED OPERATING NORMALLY. WHILE DRIVING THE VEHICLE THE SEAT CUSHION SEPARATED, DROPPED TO THE FLOOR AND BOTH ARM REST ON THE PASSENGER AND DRIVER SIDE FELL OFF OF THE SEAT. THE DEALER STATED THAT HE WAS RESPONSIBLE FOR REPLACING THE SEAT BELT. THE COST OF THE SEAT BELT WAS $75.00 AND THE SEAT CUSHION WAS $500.00. THE CONTACT FILED A COMPLAINT WITH GMC?S CONSUMER ASSISTANCE CENTER AND WAS GIVEN CASE# 71-494868469. THE FAILURE MILEAGE WAS 15000 AND THE CURRENT MILEAGE WAS 169000.
NHTSA ODI #10188370
40,000 miles · Mar 2, 2004
Seats
THE CONSUMER BEGAN TO NOTICE THAT THE DRIVER'S SEAT WAS NOT STABLE WHEN SITTING IN IT. UPON CLOSER INSPECTION THE CONSUMER FOUND THAT THE RIVETS HOLDING THE SEAT TO THE TRACK WERE BROKEN OFF. *JB THE FRAMES OF THE SEAT BROKE AS WELL WHEN THE RIVETS BROKE OFF. *LA
NHTSA ODI #10055774
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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