TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT HEARD AN ABNORMAL KNOCKING NOISE WHILE STARTING THE VEHICLE. IN ADDITION, THE DRIVER AND PASSENGER SIDE PLASTIC ROLLERS WERE FRACTURED AND CAUSED THE SEATS TO MOVE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE LOCAL DEALER WAS NOT CONTACTED. THE VEHICLE WAS N…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT HEARD AN ABNORMAL KNOCKING NOISE WHILE STARTING THE VEHICLE. IN ADDITION, THE DRIVER AND PASSENGER SIDE PLASTIC ROLLERS WERE FRACTURED AND CAUSED THE SEATS TO MOVE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE LOCAL DEALER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 142,000.
NHTSA ODI #11132698
Mileage unknown · Sep 28, 2018
Seats
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 70 MPH, THE DRIVER'S SEAT SLID ON THE TRACK AND CAUSED THE CONTACT TO BUMP INTO THE STEERING WHEEL AND DASHBOARD AREA WITH FORCE. AN UNKNOWN DEALER DIAGNOSED THAT THE SEAT RAIL NEEDED TO BE REPLACED DUE TO THE PLASTIC SEAT HOLDERS FRACTURING UNDER …
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 70 MPH, THE DRIVER'S SEAT SLID ON THE TRACK AND CAUSED THE CONTACT TO BUMP INTO THE STEERING WHEEL AND DASHBOARD AREA WITH FORCE. AN UNKNOWN DEALER DIAGNOSED THAT THE SEAT RAIL NEEDED TO BE REPLACED DUE TO THE PLASTIC SEAT HOLDERS FRACTURING UNDER THE DRIVER'S SEAT. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN AND FAILURE MILEAGE WERE NOT AVAILABLE.
NHTSA ODI #11132141
195,000 miles · Feb 9, 2017
Seats
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. UPON ENTERING THE DRIVER SIDE OF THE VEHICLE AND SITTING DOWN, THE SEAT MOVED AND FAILED TO LOCK IN PLACE. THE DEALER STATED THAT THE PART WAS NO LONGER AVAILABLE TO REPAIR THE SEAT. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 195,000.
NHTSA ODI #10953694
180,000 miles · Apr 7, 2015
Seats
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE FRONT DRIVER SEAT WAS LEANED FORWARD AND WHEN THE SEAT WAS RETURNED TO THE ORIGINAL POSITION, THE SEAT FAILED TO SECURE CAUSING THE SEAT TO MOVE WHILE DRIVING. THE CONTACT OBSERVED METAL AND PLASTIC FRAGMENTS UNDER THE SEAT. THE VEHICLE WAS NOT DIA…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE FRONT DRIVER SEAT WAS LEANED FORWARD AND WHEN THE SEAT WAS RETURNED TO THE ORIGINAL POSITION, THE SEAT FAILED TO SECURE CAUSING THE SEAT TO MOVE WHILE DRIVING. THE CONTACT OBSERVED METAL AND PLASTIC FRAGMENTS UNDER THE SEAT. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 180,000.
NHTSA ODI #10704183
80,000 miles · Oct 20, 2014
Seats
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE LATCH FOR THE FRONT SEAT FAILED TO OPERATE CAUSING THE SEAT TO MOVE WHILE DRIVING. THE DEALER DIAGNOSED THAT THE TRACT NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE …
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE LATCH FOR THE FRONT SEAT FAILED TO OPERATE CAUSING THE SEAT TO MOVE WHILE DRIVING. THE DEALER DIAGNOSED THAT THE TRACT NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 80,000.
NHTSA ODI #10648870
100,000 miles · Jan 23, 2014
SeatsCrashInjury
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE ATTEMPTING TO STOP FOR A TRAFFIC LIGHT, THE LOCKING MECHANISM FOR THE DRIVER'S SIDE SEAT FRACTURED, CAUSING THE SEAT TO SLIDE FORWARD AND PIN THE CONTACT BETWEEN THE SEAT AND THE STEERING WHEEL. THE CONTACT SUSTAINED MINOR BRUISING TO THE KNEES. …
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE ATTEMPTING TO STOP FOR A TRAFFIC LIGHT, THE LOCKING MECHANISM FOR THE DRIVER'S SIDE SEAT FRACTURED, CAUSING THE SEAT TO SLIDE FORWARD AND PIN THE CONTACT BETWEEN THE SEAT AND THE STEERING WHEEL. THE CONTACT SUSTAINED MINOR BRUISING TO THE KNEES. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 100,000.
NHTSA ODI #10561188
60,329 miles · Nov 24, 2013
Seats
MANUAL DRIVERS SEAT ADJUSTER/LOCK FAILED ALLOWING DRIVER TO BE SLAMMED INTO STEERING WHEEL ON BRAKING. SEAT WOULD NOT LOCK IN ANY POSITION AND WOULD SLAM TO THE REAR OF THE ADJUSTMENT RAILS WITH SLIGHTEST ACCELERATION. THIS CREATED A COMPLETELY UNSTABLE PLATFORM FROM WHICH TO DRIVE AND PRESENTS AN EXTREMELY UNSAFE SITUATION IF…
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MANUAL DRIVERS SEAT ADJUSTER/LOCK FAILED ALLOWING DRIVER TO BE SLAMMED INTO STEERING WHEEL ON BRAKING. SEAT WOULD NOT LOCK IN ANY POSITION AND WOULD SLAM TO THE REAR OF THE ADJUSTMENT RAILS WITH SLIGHTEST ACCELERATION. THIS CREATED A COMPLETELY UNSTABLE PLATFORM FROM WHICH TO DRIVE AND PRESENTS AN EXTREMELY UNSAFE SITUATION IF/WHEN THE VEHICLE IS USED. I HAVE GONE ONLINE TO RESEARCH THIS SITUATION AND FOUND THAT THERE HAVE BEEN LARGE NUMBERS OF SIMILAR COMPLAINTS, SOME WITH ACCIDENTS RESULTING FROM THE SITUATION. I HAVE ALSO LEARNED THAT THE PROBLEM IS A PLASTIC PART IN THE LOCKING MECHANISM WHICH BREAKS/FAILS. SOME HAVE REPORTED THAT THE VEHICLE OWNERS MUST PAY $400.00 OR SO TO GET THE NECESSARY REPAIRS. I AM AN 86 YEAR OLD ORIGINAL OWNER OF THIS VEHICLE AND FEEL THAT, BECAUSE OF THE SEVERE SAFETY HAZARD CAUSED BY THIS SITUATION, THIS SHOULD HAVE BEEN A RECALL REPAIR AND NOT AN OUT OF POCKET EXPENSE FOR ANY OWNER. MY SON, WHO IS VISITING FROM OREGON, IS GOING TO TRY TO GET MY PICKUP TO THE NEAREST GM DEALERSHIP ON MONDAY, 25 NOVEMBER FOR NECESSARY REPAIRS, AS, IN ITS CURRENT CONDITION, IT IS TOTALLY UNSAFE FOR ME TO DRIVE. I WOULD APPRECIATE THE NHTSA ADDRESSING THIS SITUATION AND REQUIRING GM TO ISSUE A RECALL DUE TO THE HAZARD INVOLVED. *TR
NHTSA ODI #10553597
Mileage unknown · Apr 9, 2012
Seats
THE TRUCK WAS PURCHASED NEW IN 1999. IT NOW HAS ONLY 45,000 ORIGINAL MILES. AT THE TIME OF PURCHASE THE PASSENGER'S SEAT MOVED FORWARD SLIGHTLY WHEN THE BRAKE WAS PRESSED. THE DEALERSHIP STATED THERE WAS NOTHING WRONG. THE PROBLEM HAS PROGRESSIVELY GOTTEN WORSE AND THE DRIVER'S SEAT IS NOW DOING THE EXACT SAME THING. APPARE…
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THE TRUCK WAS PURCHASED NEW IN 1999. IT NOW HAS ONLY 45,000 ORIGINAL MILES. AT THE TIME OF PURCHASE THE PASSENGER'S SEAT MOVED FORWARD SLIGHTLY WHEN THE BRAKE WAS PRESSED. THE DEALERSHIP STATED THERE WAS NOTHING WRONG. THE PROBLEM HAS PROGRESSIVELY GOTTEN WORSE AND THE DRIVER'S SEAT IS NOW DOING THE EXACT SAME THING. APPARENTLY THIS IS AN INHERENT PROBLEM WITH THIS VEHICLE WITH NUMEROUS COMPLAINTS. IT IS EXTREMELY DANGEROUS. WHAT CAN YOU DO TO ASSIST? *TR
NHTSA ODI #10454589
120,000 miles · Jan 31, 2012
SeatsInjury
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT HE QUICKLY APPLIED THE BRAKES WHILE DRIVING 55 MPH AND THE FRONT DRIVER'S SEAT DISCONNECTED FROM ITS SEAT TRACKS. THE CONTACT SUFFERED MINOR BRUISING ON HIS KNEES AS A RESULT. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THE CONTACT WAS INFORMED T…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT HE QUICKLY APPLIED THE BRAKES WHILE DRIVING 55 MPH AND THE FRONT DRIVER'S SEAT DISCONNECTED FROM ITS SEAT TRACKS. THE CONTACT SUFFERED MINOR BRUISING ON HIS KNEES AS A RESULT. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THE CONTACT WAS INFORMED THAT THE PLASTIC PARTS ON THE SEAT ADJUSTER FRACTURED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 120,000. UPDATED 02/17/12 *BF THE DEALER INFORMED THE CONSUMER IT WOULD COST $ 816.OO TO FIX THE PROBLEM. UPDATED 02/22/12
NHTSA ODI #10446045
Mileage unknown · Jan 5, 2012
Seats
I AM THE ORIGINAL OWNER AND THE VEHICLE HAS NOT BEEN IN AN ACCIDENT. I OWN A 1999 CHEVROLET SILVERADO LT (NEW BODY STYLE) MODEL WITH 6-WAY POWER LEATHER BUCKET SEATS. OVER THE LAST 4-5 YEARS, BEGINNING WITH THE DRIVER'S SEAT, SLOP IN THE SEAT MOVEMENT HAS CREPT IN TO A POINT WHERE NOW BOTH DRIVER AND PASSENGER SEATS EXHIBIT AN…
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I AM THE ORIGINAL OWNER AND THE VEHICLE HAS NOT BEEN IN AN ACCIDENT. I OWN A 1999 CHEVROLET SILVERADO LT (NEW BODY STYLE) MODEL WITH 6-WAY POWER LEATHER BUCKET SEATS. OVER THE LAST 4-5 YEARS, BEGINNING WITH THE DRIVER'S SEAT, SLOP IN THE SEAT MOVEMENT HAS CREPT IN TO A POINT WHERE NOW BOTH DRIVER AND PASSENGER SEATS EXHIBIT AN APPROXIMATE 1 INCH MOVEMENT WHEN EITHER STOPPING OR TAKING OFF. IF THIS SEAT IS MOVED COMPLETELY FORWARD OR BACKWARD VIA THE CONTROL KNOB, THE MOVEMENT IS ELIMINATED, BUT I CANNOT DRIVE IN EITHER OF THESE POSITIONS. TIGHTENING THE BOLTS THAT SECURE THE SEAT TO THE FRAME DOES NOT RESOLVE THE ISSUE. THE BOLTS WERE NOT LOOSE. PULLED THE SEATS FOR FURTHER INVESTIGATION AND IT APPEARS TO BE BEARING WEAR. THIS IS THE BEARING THAT THE WORM GEAR MECHANISM RIDES THROUGH. WITH THE SEATS REMOVED AND CENTERED BETWEEN FULLY FORWARD AND FULLY BACK, I CAN MOVE THE SEAT BY HAND AND WITNESS THE SLOP. MY DRIVER'S SEAT IS NEVER ADJUSTED AS IT IS ADJUSTED FOR ME ONLY SO I BELIEVE THE TAKE OFF AND STOP OVER THE YEARS MUST HAVE PLACED ENOUGH PRESSURE ON THE BEARING(S) TO WEAR THEM TO A POINT THAT THEY NO LONGER HOLD THE SEAT IN PLACE. I CONFIRMED MY FINDINGS WITH A FIRESTONE TECHNICIAN WHO HAS BEEN SENDING THESE SEATS OUT FOR BEARING REPLACEMENTS FOR MANY OF HIS CUSTOMERS. I AM VERY CONCERNED ABOUT A SEVERE SAFETY ISSUE AND THAT THERE WILL BE A POINT WHERE THE MECHANISM WILL FAIL AND MY SEAT WILL MOVE SIGNIFICANTLY FORWARD OR BACKWARDS WHEN EITHER TAKING OFF OR STOPPING CAUSING AN ACCIDENT. BROWSING THE INTERNET SHOWS MANY INDIVIDUALS WITH THE EXACT SAME ISSUE WARRANTING A SAFETY RECALL FROM GM. *TR
NHTSA ODI #10442539
Official recalls
0
No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2
EA04011 · 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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