NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
587 reports308,000 miles · Jan 13, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING 55 MPH HE DEPRESSED THE BRAKE PEDAL AND IT EXTENDED TO THE FLOOR. THE VEHICLE WAS THEN DRIVEN TO A LOCAL MECHANIC WHO INSPECTED THE VEHICLE WHO INFORMED HIM ONE OF THE BRAKE LINES WERE COVERED WITH RUST, CORRODED AND WAS LEAKING. THE MECHANIC…
Read full complaint
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING 55 MPH HE DEPRESSED THE BRAKE PEDAL AND IT EXTENDED TO THE FLOOR. THE VEHICLE WAS THEN DRIVEN TO A LOCAL MECHANIC WHO INSPECTED THE VEHICLE WHO INFORMED HIM ONE OF THE BRAKE LINES WERE COVERED WITH RUST, CORRODED AND WAS LEAKING. THE MECHANIC REPAIRED ALL OF THE BRAKE LINES AT THE CUSTOMER EXPENSE FOR $670. THE DEALER NOR MANUFACTURER WERE NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 308,000.
NHTSA ODI #10443732
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…
Read full complaint
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
Mileage unknown · Dec 12, 2011
Seats
WHILE APPROACHING A STOP SIGN, ME DRIVER SEAT SLID FORWARD AS I SLOWED. THE LOCKING DEVICE, A SMALL PLASTIC DEVICE, HAD BROKEN UNDER THE SEAT. THIS ALLOWED THE SEAT TO SLIDE FORWARD AND BACKWARD. I HAD TO WEDGE A PIECE OF WOOD PLANK BETWEEN THE SEAT AND THE FIREWALL IN ORDER TO GET MY VEHICLE HOME. *TR
NHTSA ODI #10439426
200,000 miles · Dec 1, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 10 MPH, THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD AND BRAKE FLUID SPEWED OUT FROM THE VEHICLE. AFTER INSPECTING THE VEHICLE, THE CONTACT NOTICED THAT ALL OF THE BRAKE LINES WERE CORRODED. THE VEHICLE WAS NOT TAKEN TO THE DEALER AN…
Read full complaint
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 10 MPH, THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD AND BRAKE FLUID SPEWED OUT FROM THE VEHICLE. AFTER INSPECTING THE VEHICLE, THE CONTACT NOTICED THAT ALL OF THE BRAKE LINES WERE CORRODED. 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 200,000.
NHTSA ODI #10438024
69,850 miles · Nov 19, 2011
Service Brakes, Hydraulic
ON 11-10-11 I PURCHASED A PREOWNED SILVERADO 1500 LS TRUCK FROM CHAMPION CHEVROLET,3606 BRISTOL HIGHWAY, JOHNSON CITY, TN 37602. I WAS UNABLE TO TRY OUT THE TRUCK UNTIL THEY REPAIRED A LEAKING BRAKE LINE WHICH I WAS ADVISED HAD RUSTED.. AFTER PURCHASE I GOT IT HOME AND WAS EXAMINING THE UNDER FRAME ASSEMBLIES AND FOUND ALL THE …
Read full complaint
ON 11-10-11 I PURCHASED A PREOWNED SILVERADO 1500 LS TRUCK FROM CHAMPION CHEVROLET,3606 BRISTOL HIGHWAY, JOHNSON CITY, TN 37602. I WAS UNABLE TO TRY OUT THE TRUCK UNTIL THEY REPAIRED A LEAKING BRAKE LINE WHICH I WAS ADVISED HAD RUSTED.. AFTER PURCHASE I GOT IT HOME AND WAS EXAMINING THE UNDER FRAME ASSEMBLIES AND FOUND ALL THE STEEL BRAKE LINES ARE RUSTING PREMATURELY. THE DEALER HAD INSTALLED A PATCH LINE WHERE THE RUST RUPTURE HAD BEEN. THE TRUCK IS OTHERWISE RUST FREE AND IN EXCELLENT CONDITION. I REALIZE THERE IS NO WARRANTY OF FITNESS OF PURPOSE UNDER THE UNIFORM COMMERCIAL CODE FROM THE DEALER OR GM ON THIS VEHICLE, BUT THERE IS LIABILITY FOR DEFECTIVE DESIGN WHICH SURVIVES TO SUBSEQUENT OWNERS. I PLAN TO TOW A CARGO TRAILER WITH THE TRUCK AND AM AFRAID THERE WILL BE FURTHER BRAKE LINE FAILURE WHICH COULD CAUSE SERIOUS INJURY AND PROPERTY DAMAGE. I'VE NOW LEARNED THIS PROBLEM IS WIDESPREAD WITH THESE VEHICLES AND STRONGLY URGE A RECALL IN ORDER TO PROTECT THE DRIVING PUBLIC AND THE OWNERS OF THESE DEFECTIVE TRUCKS. *TR
NHTSA ODI #10436456
120,000 miles · Nov 12, 2011
Seats
THE DRIVERS SIDE POWER SEAT MOTOR HAS PLAY IN IT AND ALLOWS THE SEAT TO MOVE 1-2 INCHES BACK AND FORTH AS THE TRUCK BRAKES OR ACCELERATES. THE PASSENGER SIDE SEAT IS ALSO JAMMED AND NO LONGER MOVES AT ALL. *TR
NHTSA ODI #10435359
150,000 miles · Nov 10, 2011
Structure
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 30-55 MPH, THE CONTACT HEARD AN UNUSUAL NOISE FROM THE OUTSIDE THE VEHICLE. THE CONTACT MANEUVERED TO THE SIDE OF THE ROAD AND DISCOVERED THAT THE FRAME WAS COMPLETELY FRACTURED. THE CONTACT RESUMED DRIVING THE VEHICLE AT AN EXTREMELY LOW RATE OF S…
Read full complaint
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 30-55 MPH, THE CONTACT HEARD AN UNUSUAL NOISE FROM THE OUTSIDE THE VEHICLE. THE CONTACT MANEUVERED TO THE SIDE OF THE ROAD AND DISCOVERED THAT THE FRAME WAS COMPLETELY FRACTURED. THE CONTACT RESUMED DRIVING THE VEHICLE AT AN EXTREMELY LOW RATE OF SPEED. THE VEHICLE WAS DAMAGED BEYOND REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000. THE VIN WAS UNAVAILABLE. UPDATED 12/12/11*LJ
NHTSA ODI #10435142
161,458 miles · Oct 25, 2011
Service Brakes, Hydraulic
I WAS SLOWING UP TO STOP AT THE STOPLIGHT AND WAS CLOSE TO STOPPING WHEN SUDDENLY MY BRAKE PEDAL WENT COMPLETELY DOWN TO THE FLOOR AND I HAD NO BRAKES. FORTUNATELY I WAS GOING SLOW AND MANAGED TO COME TO A ROLLING STOP. I HAD TO CALL FOR A TOW TRUCK TO TAKE MY VAN TO A REPAIR SHOP. THEY FOUND A CORRODED AND LEAKING BRAKE LINE. T…
Read full complaint
I WAS SLOWING UP TO STOP AT THE STOPLIGHT AND WAS CLOSE TO STOPPING WHEN SUDDENLY MY BRAKE PEDAL WENT COMPLETELY DOWN TO THE FLOOR AND I HAD NO BRAKES. FORTUNATELY I WAS GOING SLOW AND MANAGED TO COME TO A ROLLING STOP. I HAD TO CALL FOR A TOW TRUCK TO TAKE MY VAN TO A REPAIR SHOP. THEY FOUND A CORRODED AND LEAKING BRAKE LINE. THEY TOLD ME THAT THE REST OF THE BRAKELINES WERE ALSO VERY CORRODED BADLY AND WOULD LIKE ALSO NEED REPLACED DUE TO THE CORROSION. *TR
NHTSA ODI #10432828
92,000 miles · Oct 21, 2011
Service Brakes, Hydraulic
1999 CHEVY SILVERADO 1500. MOVING VEHICLE IN DRIVEWAY, PRESSED BRAKE PEDAL, WENT ALL THE WAY TO FLOOR. UPON INSPECTION FOUND MULTIPLE CORROSION POINTS IN STEEL BRAKE LINE, THAT RESULTED IN HOLES IN THE LINE. TWO CORROSION POINTS/HOLES LOCATED IN THE "CLIPS" THAT HOLD BRAKE LINE IN PLACE. ONE "CLIP" INSIDE THE MAIN ENGINE COMPART…
Read full complaint
1999 CHEVY SILVERADO 1500. MOVING VEHICLE IN DRIVEWAY, PRESSED BRAKE PEDAL, WENT ALL THE WAY TO FLOOR. UPON INSPECTION FOUND MULTIPLE CORROSION POINTS IN STEEL BRAKE LINE, THAT RESULTED IN HOLES IN THE LINE. TWO CORROSION POINTS/HOLES LOCATED IN THE "CLIPS" THAT HOLD BRAKE LINE IN PLACE. ONE "CLIP" INSIDE THE MAIN ENGINE COMPARTMENT, ANOTHER ON TOP OF THE FRAME WHERE LINE LEAVES ENGINE COMPARTMENT GOING TO REAR OF VEHICLE. *TR
NHTSA ODI #10432292
111,000 miles · Oct 20, 2011
Service Brakes, Hydraulic
WHEN PULLING UP TO A STOP LIGHT AT A CONGESTED INTERSECTION, I APPLIED THE BRAKES AND THE PEDAL WENT CLEAR TO THE FLOOR. AFTER INSPECTION I NOTICED I HAD A BROKEN BREAK LINE. UPON CLOSER INSPECTION IT APPEARED THAT SEVERAL WERE VERY CORRODED AND APPEAR READY TO BREAK AT ANY GIVEN TIME. THE TRUCK IS NOT A DAILY DRIVER AND I AV…
Read full complaint
WHEN PULLING UP TO A STOP LIGHT AT A CONGESTED INTERSECTION, I APPLIED THE BRAKES AND THE PEDAL WENT CLEAR TO THE FLOOR. AFTER INSPECTION I NOTICED I HAD A BROKEN BREAK LINE. UPON CLOSER INSPECTION IT APPEARED THAT SEVERAL WERE VERY CORRODED AND APPEAR READY TO BREAK AT ANY GIVEN TIME. THE TRUCK IS NOT A DAILY DRIVER AND I AVERAGE LESS THAN 8,000 MILES A YEAR ON IT. *TR
NHTSA ODI #10432288
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.
Illustration