NHTSA owner reports · September 18, 2026 snapshot.
Structure complaints
33 reportsClear category filter12,000 miles · Mar 30, 2014
EquipmentFuel System, GasolineService Brakes
'THE PADS RUSTED TO THE ROTORS, DESTROYING THE ROTORS. I HAD TO HAVE ALL THE ROTORS AND PADS REPLACED. SINCE THEN HAVE HAD TO REPLACE THE PADS AND ROTORS TWO MORE TIMES. I'VE ALSO HAD TO REPLACE THE REAR CALIPERS AND THE BACKING PLATES AT LESS THAN 100,000 MILES. I'VE HAD TO REPLACE THE ABS SENSORS AND GREASE BOOT S ON THE…
Read full complaint
'THE PADS RUSTED TO THE ROTORS, DESTROYING THE ROTORS. I HAD TO HAVE ALL THE ROTORS AND PADS REPLACED. SINCE THEN HAVE HAD TO REPLACE THE PADS AND ROTORS TWO MORE TIMES. I'VE ALSO HAD TO REPLACE THE REAR CALIPERS AND THE BACKING PLATES AT LESS THAN 100,000 MILES. I'VE HAD TO REPLACE THE ABS SENSORS AND GREASE BOOT S ON THE FRONT AXELS. REPLACED THE UNIVERSAL JOINT, THE FOUR WHEEL DRIVE SWITCHES TWICE, THE POWER WINDOW MECHANISMS, THE TAIL GATE STRAPS AND THE LEVER--WHICH ISN'T WORKING RIGHT AGAIN, THE GAS TANK STRAP, RUSTY FUEL LINES AND BRAKE LINES, AND THE DIFFERENTIAL COVER THAT RUSTED OUT. ALSO THE AIR CONDITIONING PULLEY. *TR
NHTSA ODI #10575722
141,775 miles · Aug 1, 2013
Service BrakesStructureSuspension
DURING A SCHEDULED MAINT./REPAIR VISIT AT A MAJOR CHEVY DEALERSHIP, THEY ADVISED THE SHOCK ABSORBERS COULDN'T BE REPLACED; THE UPPER MOUNTS FOR BOTH REAR SHOCKS WERE GONE. THE DEALER SUGGESTED I TAKE THE TRUCK TO AN AUTO BODY SHOP FOR THE NEEDED RESTORATION WORK, THEN RETURN. I LATER INSPECTED THE UNDERCARRIAGE OF MY TRUCK …
Read full complaint
DURING A SCHEDULED MAINT./REPAIR VISIT AT A MAJOR CHEVY DEALERSHIP, THEY ADVISED THE SHOCK ABSORBERS COULDN'T BE REPLACED; THE UPPER MOUNTS FOR BOTH REAR SHOCKS WERE GONE. THE DEALER SUGGESTED I TAKE THE TRUCK TO AN AUTO BODY SHOP FOR THE NEEDED RESTORATION WORK, THEN RETURN. I LATER INSPECTED THE UNDERCARRIAGE OF MY TRUCK AND FOUND EXTENSIVE ROT AND RUST ON MAJOR FRAME STRUCTURES. BOTH UPPER SHOCK MOUNTS APPEAR TO HAVE ROTTED AWAY. BOTH FRAME SPREADER TUBES, TO WHICH THE UPPER SHOCK MOUNTS AND THE REAR FUEL TANK SUPPORT STRAP ARE ATTACHED, HAVE LOST MOST OF THEIR STRUCTURAL INTEGRITY. I ALSO NOTED MOST MAIN FASTENER BOLTS APPEAR TO HAVE LOST THEIR STRUCTURAL INTEGRITY,DUE TO ROT AND RUST. IN DECEMBER OF 2009, I REPLACED THE FUEL STRAPS. ONE BRAKE LINE FAILED (ROTTED OPEN), CAUSING BRAKE LOSS, AS I WAS DEPARTING THE SERVICE VISIT. ALL THE BRAKE LINES HAD DETERIORATED TO THE POINT THAT REPLACEMENT WAS NECESSARY. IN JULY OF 2011, I HAD TO REPLACE THE REAR ROTTED OUT BUMPER. I AM NOW SEEING ROT AND RUST BREAKING THROUGH THE FRONT BUMPER OF MY TRUCK. IN LIGHT OF THE MAJOR RUST AND STRUCTURAL FAILURES I HAVE EXPERIENCED RECENTLY, I STARTED RESEARCHING NHTSA'S DATA BASE TO SEE IF OTHERS WERE EXPERIENCING THESE ISSUES WITH THEIR SILVERADO, OR IF THIS WAS AN ANOMALY. I WAS QUITE STARTLED TO FIND NUMEROUS REPORTS BEING CITED FOR IDENTICAL PROBLEMS AND FAILURES FOR THIS VEHICLE. TWO ISSUES CONCERN ME: FIRST, MAJOR RUST & ROT HAS BEEN REPORTED ON THIS MODEL AND LATER ONES FOR OVER A PERIOD OF 10-13 YEARS. SECOND, DO, OR SHOULD SERVICE SHOPS HAVE A RESPONSIBILITY TO ADVISE WHEN SIGNS OF MAJOR DETERIORATION OCCUR, SO WE CAN MAKE REPAIR/INVESTMENT CHOICES? I'VE OWNED SEVERAL TRUCKS, KEEP THEM FOR 8-10 YEARS, THEN REPLACE THEM. I'VE SEEN SURFACE RUST OVER THE YEARS, BUT NOT THIS KIND OF FRAME/UNDERCARRIAGE DETERIORATION OVER A RELATIVELY SHORT TRUCK LIFE. *TR
NHTSA ODI #10533038
95,000 miles · Sep 19, 2012
Service BrakesStructure
REAR BRAKE LINE RUSTED OUT. THANK GOD I WAS GOING SLOW AND THERE WAS NOT MUCH TRAFFIC. WHEN FIXING THE BRAKE LINE I NOTICE THE REAR DUST SHIELDS WERE COMPLETELY GONE AND THE FRAME HAD ALOT OF RUST. FAST FORWARD 8-20-12 WHEN WORKING ON THE FRONT BRAKE LINES BECAUSE THEY RUSTED OUT TOO. I HAD THE TRUCK UP ON JACK STANDS. CAME HO…
Read full complaint
REAR BRAKE LINE RUSTED OUT. THANK GOD I WAS GOING SLOW AND THERE WAS NOT MUCH TRAFFIC. WHEN FIXING THE BRAKE LINE I NOTICE THE REAR DUST SHIELDS WERE COMPLETELY GONE AND THE FRAME HAD ALOT OF RUST. FAST FORWARD 8-20-12 WHEN WORKING ON THE FRONT BRAKE LINES BECAUSE THEY RUSTED OUT TOO. I HAD THE TRUCK UP ON JACK STANDS. CAME HOME TO FIND THE FRONT END ON THE GROUND. THE FRAME BROKE COMPLETELY INTO, AT THE CROSS MEMBER FOR THE TORSIONBARS. I HAVE BEEN TOLD THAT IS ONE OF THE STRONGEST PARTS OF THE FRAME. WHAT WOULD OF HAPPENED IF I WAS GOING DOWN THE ROAD. *TR *JS
NHTSA ODI #10475955
180,000 miles · Aug 2, 2012
Service BrakesStructure
BOTH FRONT AND REAR BRAKES WENT AT THE SAME TIME RESULTING IN TOTAL LOSS OF BRAKES DUE TO RUSTED OUT BRAKE LINES. SEVERE CORROSION ON FRAME CROSS MEMBER. *TR
NHTSA ODI #10469037
Mileage unknown · Apr 4, 2012
Service Brakes, HydraulicStructure
THE REAR BRAKE LINES STARTED TO RUST OUT ON 2005 CAUSING THE BRAKES TO FAIL, IN 2009 ALL OF THE BRAKE LINES RUSTED OUT CAUSING BRAKE FAILURE, NO ACCIDENT. I REPLACED AT THE BRAKE LINES MYSELF. *TR THE REAR FRAME RAILS ARE RUSTING AND HOLES HAVE DEVELOPED IN THE FRAME.
NHTSA ODI #10454171
117,000 miles · Sep 22, 2011
Structure
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO K1500. THE CONTACT STATED THAT THE FRAME WAS RUSTED. NEITHER THE DEALER OR MANUFACTURER HAD NOT BEEN NOTIFIED. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHO INFORMED THE CONTACT TO REPLACE THE ENTIRE FRAME. NO REPAIRS WERE PERFORMED. THE CURRENT AND FAILURE MILEAGES WERE 117…
Read full complaint
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO K1500. THE CONTACT STATED THAT THE FRAME WAS RUSTED. NEITHER THE DEALER OR MANUFACTURER HAD NOT BEEN NOTIFIED. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHO INFORMED THE CONTACT TO REPLACE THE ENTIRE FRAME. NO REPAIRS WERE PERFORMED. THE CURRENT AND FAILURE MILEAGES WERE 117,000.
NHTSA ODI #10426830
64,395 miles · Aug 24, 2011
Structure
EXTENSIVE FRAME RUST FROM MIDDLE OF SHACKLES IN REAR TO THE BACK BUMPER. CROSS MEMBER FAILING AND SEVERAL BRAKE LINES RUSTING AND NEED REPLACED. VEHICLE HAS 64,000 MILES ON IT. GOOD MAINTENANCE KEPT. CORNER PANELS RUSTING ALONG WITH BOTH REAR BRAKE ASSEMBLIES AND BRAKE DUST COVERS HAVE RUSTED OFF. SPARE TIRE CABLE AND MECHANICAL…
Read full complaint
EXTENSIVE FRAME RUST FROM MIDDLE OF SHACKLES IN REAR TO THE BACK BUMPER. CROSS MEMBER FAILING AND SEVERAL BRAKE LINES RUSTING AND NEED REPLACED. VEHICLE HAS 64,000 MILES ON IT. GOOD MAINTENANCE KEPT. CORNER PANELS RUSTING ALONG WITH BOTH REAR BRAKE ASSEMBLIES AND BRAKE DUST COVERS HAVE RUSTED OFF. SPARE TIRE CABLE AND MECHANICAL MECHANISM TO LOWER AND RAISE THE TIRE ARE RUSTED. SHACKLE MOUNTS ON BOTH THE LEFT AND RIGHT REAR ARE ALMOST COMPLETELY RUSTED THROUGH THE FRAME AND ARE IN DANGER OF COMING OFF. HAD TO WELD A BRACE ON BOTH LEFT AND RIGHT REAR FRAME TO PREVENT FAILURE IN THAT AREA SO THAT VEHICLE IS SOMEWHAT SAFE TO DRIVE. DAMAGED STARTED TO OCCUR AROUND 2005 AND HAS PROGRESSIVELY GOTTEN WORSE THROUGHOUT THE YEAR. VEHICLE DOES SIT FOR LONG DURATIONS IN MY YARD. *TR
NHTSA ODI #10421344
137,880 miles · Aug 19, 2011
Service Brakes, HydraulicStructure
GM PICKUP TRUCKS -EXCESSIVE RUST TO BRAKE LINES, FRAME & CROSS-MEMBERS. I SUGGEST A METALLUGICAL ANALYSIS OF SAID PARTS FROM LATE '90S THRU 2007 VS '60S,'70'S, & '80'S MODELS WHICH DID NOT EXHIBIT EARLY FAILURE. THE EXCESSIVE RUST TO BRAKE LINES & UNDERCARRIAGE IS A SAFETY ISSUE AND IS DANGEROUS TO THE OCCUPANTS OF THE VEHICLE…
Read full complaint
GM PICKUP TRUCKS -EXCESSIVE RUST TO BRAKE LINES, FRAME & CROSS-MEMBERS. I SUGGEST A METALLUGICAL ANALYSIS OF SAID PARTS FROM LATE '90S THRU 2007 VS '60S,'70'S, & '80'S MODELS WHICH DID NOT EXHIBIT EARLY FAILURE. THE EXCESSIVE RUST TO BRAKE LINES & UNDERCARRIAGE IS A SAFETY ISSUE AND IS DANGEROUS TO THE OCCUPANTS OF THE VEHICLE AND OTHER MOTORIST & PEDESTRIANS WHEN FAILURE OCCURS, NOT IF, BUT WHEN IT OCCURS. THE NHTSA HAS BEEN AWARE SINCE 2009 AND IT APPEARS TO THE PUBLIC THAT POLITICS IS IN PLAY. NO RESULTS HAVE SURFACED, BUT PLENTY OF DANGEROUSLY RUSTED & UNSAFE VEHICLES TRAVEL THE ROAD AMONGST YOUR LOVED ONES. *TR
NHTSA ODI #10420096
110,000 miles · May 29, 2011
Structure
2000 Z71 3 DOOR BRAKE LINE FAILURE DUE TO EXCESSIVE FRAME ROTTING THE LOAD LIMITER THAT HITS THE AXLE BECAME WEEK AND ROTTED IT TILTED AND WAS ABLE TO COME IN CONTACT WITH THE BRAKE LINE LEAF SPRING BRACKET BROKE WENT THROUGH THE BED CROSS MEMBERS RUSTED OFF EXCESSIVE TILT IN TRUCK CAUSED REAR END TO GO ROCKER HAVE ALREADY BEEN…
Read full complaint
2000 Z71 3 DOOR BRAKE LINE FAILURE DUE TO EXCESSIVE FRAME ROTTING THE LOAD LIMITER THAT HITS THE AXLE BECAME WEEK AND ROTTED IT TILTED AND WAS ABLE TO COME IN CONTACT WITH THE BRAKE LINE LEAF SPRING BRACKET BROKE WENT THROUGH THE BED CROSS MEMBERS RUSTED OFF EXCESSIVE TILT IN TRUCK CAUSED REAR END TO GO ROCKER HAVE ALREADY BEEN REDONE ONCE BED TRUCK BED IS RUSTED WHEEL WELLS AND ON THE BED ITSELF TO THE POINT IT NOT WORTH FIXING FRAME HAD BEEN PATCHED BEFORE I GOT THE TRUCK AND IT ROTTING AROUND THE PATCHES IV PURCHASED A USED FRAME OF ANOTHER TRUCK BASICALLY IM TREATING THIS TRUCK LIKE AN OLD CLASSIC IT IN NEED OF FULL RESTORATION AND IT REALLY SHOULD NOT BE THE TRUCK IS ONLY 10 YEARS OLD MY 1989 SCOTTSDALE DIDN'T HAVE A 1/16 TH THE ISSUES AT 20 YEARS OLD WHEN I SOLD IT. *TR
NHTSA ODI #10403675
110,000 miles · Jan 22, 2011
Structure
VEHICLE BECAME VERY BOUNCY IN THE REAR, WOULD BOUNCE ENOUGH TO NEARLY SPIN OUT WHILE DRIVING. WENT TO CHANGE REAR SHOCKS AND SAW THAT BOTH CROSS MEMBERS OF THE FRAME ARE ROTTED OFF. THIS SUPPORTS THE FRAME AND IS THE ATTACHMENT FOR SHOCK MOUNTS AND GAS TANK. NOTHING HAS BEEN DONE TO THE VEHICLE TO CORRECT THIS FAILURE. VEHIC…
Read full complaint
VEHICLE BECAME VERY BOUNCY IN THE REAR, WOULD BOUNCE ENOUGH TO NEARLY SPIN OUT WHILE DRIVING. WENT TO CHANGE REAR SHOCKS AND SAW THAT BOTH CROSS MEMBERS OF THE FRAME ARE ROTTED OFF. THIS SUPPORTS THE FRAME AND IS THE ATTACHMENT FOR SHOCK MOUNTS AND GAS TANK. NOTHING HAS BEEN DONE TO THE VEHICLE TO CORRECT THIS FAILURE. VEHICLE IS NOT SAFE OR ROAD WORTHY IN THIS CONDITION. (INCIDENTALLY, EXPERIENCED TOTAL BRAKE FAILURE AND ALL BRAKE LINES HAD TO BE REPLACED TWO YEARS AGO DUE TO ROTTING, AS WELL AS THE GAS TANK STRAPS. ROCKER PANELS ARE RUSTED OUT, AS WELL AS THE WHEEL WELLS OF THE BED. I BOUGHT THIS USED IN 2004. *TR
NHTSA ODI #10378239
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