IllustrationWHEN GOING THE SPEED LIMIT THE TRUCK SEEMS TO WANT TO CROSS OVER LANES JUST BY CROSSING A DIP. IT FEELS FLOATY ON THE ROAD ANOTHER WORDS IT DOESN'T WANT TO STAY IN ITS OWN LANE
2000 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2000 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 1500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
210–25K
3725–50K
8050–75K
10275–100K
152100–150K
97150K+
489 reports with mileage · 125 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes, Hydraulic. Review the 237 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 162 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 33 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
69 crash reports5 fire reports25 injury reports
Suspension complaints
23 reportsI JUST HAD TRANSMISSION WORK DONE ON MY TRUCK WHEN IT BURNED THE GEARS UP. MY BRAKES HAVE ALWAYS EITHER WENT COMPLETELY TO THE FLOOR BEFORE THEY STOPPED OR LOCKED UP. RIGHT NOW ITS BROKE DOWN DUE TO TOO MANY PROBLEMS FOR ME TO BE ABLE TO FIX BUT HAS ONLY BEEN NOT DRIVEABLE SINCE JULY 2017
WENT TO GET VEHICLE INSPECTED WAS INFORMED THAT THE FRAME IS RUSTED OUT AND IS UNINSPECTABLE AND THAT I NEED TO JUNK THE TRUCK THE BODY IS GREAT HAS 150000 MILES BUT THE CROSS BRACES ARE RUSTED OUT AND ITS CRACKED OVER THE REAR AXEL WITH ALL THE PROBLEMS OYHERS ARE HAVING AND WITH TOYOTA HAVING RECALL ON FRAME RUSTING OUT GM SHO…
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WENT TO GET VEHICLE INSPECTED WAS INFORMED THAT THE FRAME IS RUSTED OUT AND IS UNINSPECTABLE AND THAT I NEED TO JUNK THE TRUCK THE BODY IS GREAT HAS 150000 MILES BUT THE CROSS BRACES ARE RUSTED OUT AND ITS CRACKED OVER THE REAR AXEL WITH ALL THE PROBLEMS OYHERS ARE HAVING AND WITH TOYOTA HAVING RECALL ON FRAME RUSTING OUT GM SHOULD BE DOING THE SAME THEY SAY THAT THE NHTSA IS THE ONE TO TELL THEM TO DO A RECALL AND UNTILL THEY ARE TOLD TO THERE IS NOTHING THAY CAN DO
EXTREME RUST ON UNDER CARRAGE OF VEHICLE. BRAKE LINES RUSTED OUT CAUSING BRAKE FAILURE FRAME RUSTED OUT AT REAR LEAF SPRINGS AND FRAME RAIL CROSS MEMBERS. REAR SHOCK HANGERS RUSTED OFF VEHICLE. FRAME RUSTED SO BAD THAT IT PROHIBITS TOUNG OF ANY TYPE OF TRAILER. TOYOTA HAD SAME PROBLEM AND THEY HAD TO DO A RECALL SO WHY HAS GM NO…
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EXTREME RUST ON UNDER CARRAGE OF VEHICLE. BRAKE LINES RUSTED OUT CAUSING BRAKE FAILURE FRAME RUSTED OUT AT REAR LEAF SPRINGS AND FRAME RAIL CROSS MEMBERS. REAR SHOCK HANGERS RUSTED OFF VEHICLE. FRAME RUSTED SO BAD THAT IT PROHIBITS TOUNG OF ANY TYPE OF TRAILER. TOYOTA HAD SAME PROBLEM AND THEY HAD TO DO A RECALL SO WHY HAS GM NOT HAD TO DO THE SAME THING. IT IS A VERY LARGE SAFETY ISSUE AFFECTING MANY VEHICLES ON THE HWY TODAY.
TYPICAL GM PRODUCT, REAR BUMPER RUST OUT, BRAKE LIKES RUSTED COMPLETELY OUT, REAR CROSS MEMBERS, FUEL TANK CROSS MEMBER HAS RUSTED OUT COMPLETELY ON PASSENGER SIDE WHERE THE SHOCK MOUNTS TO AND THE SAME FOR THE REAR CROMMM MEMBER WHERE THE SHOCK MOUNTS TO ON THE DRIVER SIDE. I MEAN THE FUEL TAN CROSS MEMBER HOLDS THE TANK IN PL…
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TYPICAL GM PRODUCT, REAR BUMPER RUST OUT, BRAKE LIKES RUSTED COMPLETELY OUT, REAR CROSS MEMBERS, FUEL TANK CROSS MEMBER HAS RUSTED OUT COMPLETELY ON PASSENGER SIDE WHERE THE SHOCK MOUNTS TO AND THE SAME FOR THE REAR CROMMM MEMBER WHERE THE SHOCK MOUNTS TO ON THE DRIVER SIDE. I MEAN THE FUEL TAN CROSS MEMBER HOLDS THE TANK IN PLACE AND IF THAT TANK DROPPS THEN I'D ASSUME THAT IT WOULD BE A SAFETY ISSUE. ATLEAST I HOPE SO.
I WAS CHANGING THE SHOCKS ON THE REAR AND NOTICED THAT THE FRAME WHERE THE TOP SHOCK MOUNT IS IS ALMOST RUSTED OFF. WILL CHEVY PAY TO REPAIR THE FRAME DAMAGE BECAUSE ITS A SAFETY HAZARD. WHY IS IT THAT CHEVY FRAMES RUST SOOO BAD? WHY DON'T THEY COAT THE FRAMES WITH SOMETHING TO THEY DON'T RUST SOOO BAD. FORD FRAMES DON'T RUS…
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I WAS CHANGING THE SHOCKS ON THE REAR AND NOTICED THAT THE FRAME WHERE THE TOP SHOCK MOUNT IS IS ALMOST RUSTED OFF. WILL CHEVY PAY TO REPAIR THE FRAME DAMAGE BECAUSE ITS A SAFETY HAZARD. WHY IS IT THAT CHEVY FRAMES RUST SOOO BAD? WHY DON'T THEY COAT THE FRAMES WITH SOMETHING TO THEY DON'T RUST SOOO BAD. FORD FRAMES DON'T RUST THIS BAD.
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 30 MPH, THERE WAS A LOAD SNAPPING SOUND HEARD FROM THE REAR OF THE VEHICLE AS THE CONTACT TRAVELED OVER A LARGE CRACK IN THE GROUND. THE CONTACT OPENED THE REAR OF THE VEHICLE WHERE HE OBSERVED THAT THE REAR LEAF SPRING CAME TH…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 30 MPH, THERE WAS A LOAD SNAPPING SOUND HEARD FROM THE REAR OF THE VEHICLE AS THE CONTACT TRAVELED OVER A LARGE CRACK IN THE GROUND. THE CONTACT OPENED THE REAR OF THE VEHICLE WHERE HE OBSERVED THAT THE REAR LEAF SPRING CAME THROUGH THE REAR OF THE VEHICLE. THE CONTACT WHO WAS A LICENSED MECHANIC REPLACED THE SHACKLE ON THE VEHICLE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 176,294. UPDATED 10/24/14*LJ UPDATED 4/16/2015 *JS
WHILE DRIVING ON A CITY STREET I HEARD A LOUD BANG FROM THE REAR OF MY VEHICLE. WHEN I GOT HOME AND LOOKED AROUND I FOUND OUT MY DRIVER SIDE LEAF SPRING SHACKLE SNAPPED IN HALF AND THE LEAF SPRING SHOT UP AND TORE A HOLE IN MY TRUCK BED. LUCKILY THE TRUCK WAS UNLOADED AT THE TIME. THE SHACKLE RUSTED THROUGH AND FAILED. *TR
TL* THE CONTACT OWNS A 2006 CHEVROLET SILVERADO C1500 (N/A). THE CONTACT STATED THAT THE DRIVER WAS TRAVELING 65-70 MPH WHEN AN ABNORMAL BUMP SOUND WAS HEARD FROM THE FRONT END OF THE VEHICLE. THE PASSENGER'S SIDE OF THE VEHICLE THEN DROPPED TO THE GROUND. THE CONTACT WAS ABLE TO COAST OFF THE ROADWAY AND ONTO THE SHOULDER WHERE…
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TL* THE CONTACT OWNS A 2006 CHEVROLET SILVERADO C1500 (N/A). THE CONTACT STATED THAT THE DRIVER WAS TRAVELING 65-70 MPH WHEN AN ABNORMAL BUMP SOUND WAS HEARD FROM THE FRONT END OF THE VEHICLE. THE PASSENGER'S SIDE OF THE VEHICLE THEN DROPPED TO THE GROUND. THE CONTACT WAS ABLE TO COAST OFF THE ROADWAY AND ONTO THE SHOULDER WHERE THE CONTACT VEHICLE WAS TOWED TO THE DEALER FOR INSPECTION. THE DEALER ADVISED THAT THE BEARING WAS FRACTURED AND CAUSED DAMAGE TO THE BRAKE AND THE WHEEL. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE AND CURRENT MILEAGE WAS 68,000.
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 …
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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
Official recalls
0No 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
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.