IllustrationTHE RUSTING OUT OF THIS VEHICLE IS SO BAD. OUR BRAKE LINE ALL HAVE RUSTED THROUGH AND OUR GAS TANK STRAP ALSO RUSTED OFF. LUCKILY NO ACCIDENT HAVE OCCURRED. *TR
1999 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1999 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
130–25K
3725–50K
6150–75K
6275–100K
141100–150K
104150K+
418 reports with mileage · 169 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 222 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 126 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
43 crash reports5 fire reports18 injury reports
What owners actually said
587 reportsI WAS DRIVING EAST BOUND IN THE LEFT LANE. A CAR TURNED RIGHT INTO THE RIGHT LANE HEADING EAST BOUND. AS I CAME THROUGH THE INTERSECTION THE CAR SUDDENLY CHANGED LANES INTO THE LEFT LANE IN FRONT OF MY VEHICLE. THE CAR THAT CHANGED LANES IN FRONT OF ME WAS ONLY GOING APPROXIMATELY 5-10 MPH. WITH MY VEHICLE TRAVELING 45 MPH I HAD…
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I WAS DRIVING EAST BOUND IN THE LEFT LANE. A CAR TURNED RIGHT INTO THE RIGHT LANE HEADING EAST BOUND. AS I CAME THROUGH THE INTERSECTION THE CAR SUDDENLY CHANGED LANES INTO THE LEFT LANE IN FRONT OF MY VEHICLE. THE CAR THAT CHANGED LANES IN FRONT OF ME WAS ONLY GOING APPROXIMATELY 5-10 MPH. WITH MY VEHICLE TRAVELING 45 MPH I HAD TO SLAM ON MY BREAKS AND HORN AT THE SAME TIME AND THE CAR SWITCHED BACK INTO THE RIGHT LANE. MY BREAKS WORKED FOR ABOUT A SECOND BEFORE THE PETAL WENT TO THE FLOOR. I TRIED THE EMERGENCY BREAK WHICH DID NOT WORK EITHER. I WAS ABLE TO SLOW DOWN AND PULL INTO A PARKING LOT WITHOUT CAUSING A CRASH. THE BRAKE LINE BUSTED RIGHT UNDER THE DRIVERS DOOR BEHIND THE FRONT TIRE. THE BREAK LINES WERE VERY RUSTED UPON INSPECTION. *TR
TOOK MY 1999 CHEVY EXT CAB IN FOR SERVICE. PUT IT ON THE LIFT FOR AN OIL CHANGE AND THE FRAME CRACKED. NOTIFIED GM AND THEY TOLD ME TO TAKE IT TO A DEALER AND WHEN I ASKED THEM WHO WAS PAYING THE BILL THEY TOLD ME I WAS. UNABLE TO FIX IT BECAUSE THEY DON'T ALLOW WELDING ON THE FRAME IN THIS STATE. I ASKED THEM IF THEY WERE G…
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TOOK MY 1999 CHEVY EXT CAB IN FOR SERVICE. PUT IT ON THE LIFT FOR AN OIL CHANGE AND THE FRAME CRACKED. NOTIFIED GM AND THEY TOLD ME TO TAKE IT TO A DEALER AND WHEN I ASKED THEM WHO WAS PAYING THE BILL THEY TOLD ME I WAS. UNABLE TO FIX IT BECAUSE THEY DON'T ALLOW WELDING ON THE FRAME IN THIS STATE. I ASKED THEM IF THEY WERE GOING TO DO ANYTHING ABOUT IT AND WAS TOLD THEY WOULD GET IN TOUCH WITH MANAGEMENT AND LET THEM KNOW OF THE PROBLEM. NEVER GOT IT FIXED BECAUSE OF THE PRICE TAG TO DO IT I AM GOING TO RUN IT TO THE JUNK YARD TO GET READ OF IT. I HAVE KNOW OTHER PEOPLE WITH THE SAME PROBLEM BUT NEVER ANY RECALLS. PLEASE LET PEOPLE KNOW NOT TO BUY GMS BECAUSE THEY ARE ALL JUNK AND GM WANT FIX THE PROBLEM WITH THEM. *TR
I WAS OPERATING MY VEHICLE A APPROX. 30 MPH AND WHEN I APPLIED MY BRAKES, THE BRAKE PEDAL WENT TO THE FLOOR. I HAD NO WARNING . UPON INSPECTION FOUND THAT A BRAKE LINES HAD RUSTED AND WAS LEAKING FROM THE REAR AND FRONT BRAKE SYSTEMS. I AM AWARE THAT THE SYSTEM HAS A DUAL SYSTEM FOR SAFETY BUT NEVER GAVE A WARNING. WITH BOTH FRO…
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I WAS OPERATING MY VEHICLE A APPROX. 30 MPH AND WHEN I APPLIED MY BRAKES, THE BRAKE PEDAL WENT TO THE FLOOR. I HAD NO WARNING . UPON INSPECTION FOUND THAT A BRAKE LINES HAD RUSTED AND WAS LEAKING FROM THE REAR AND FRONT BRAKE SYSTEMS. I AM AWARE THAT THE SYSTEM HAS A DUAL SYSTEM FOR SAFETY BUT NEVER GAVE A WARNING. WITH BOTH FRONT AND REAR LEAKING, WARNING LIGHT NEVER CAME ON. ALL OF THE LINES ARE VERY RUSTED. I HAVE VINTAGE CARS WITH BRAKE LINES THAT NEVER BEEN REPAIRED, AND A NEWER VEHICLE WITH MANY BRAKE PROBLEMS. *TR
REAR PASSENGER DOOR LOCKS WILL NOT OPERATE MAKING IT ALMOST IMPOSSIBLE TO EXIT THE VEHICLE QUICKLY INTHE EVENT OF AN EMERGENCY. THE STEERING IS VERY SLOPPY AT SPEEDS ABOVE 30 MPH. AT HIGHER SPEEDS THE VEHICLE WILL WONDER ALL OVER THE ROAD MAKING IT VERY HARD TO OPERATE SAFELY. *TR
BRAKES FAILED ON MY 1999 CHEVROLET SILVERADO IN JUNE OF 2007 AS MY WIFE APPROACHED OUR DRIVEWAY. MY WIFE WAS UNABLE TO STOP AND HAD TO COAST TO A STOP AND PULL TO THE SHOULDER. IF THIS BRAKE FAILURE HAD HAPPENED AT ANOTHER PLACE OR TIME, THERE LIKELY WOULD HAVE BEEN A CATASTROPHIC ACCIDENT. CHEVROLET DEALER SAID THAT THE FRON…
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BRAKES FAILED ON MY 1999 CHEVROLET SILVERADO IN JUNE OF 2007 AS MY WIFE APPROACHED OUR DRIVEWAY. MY WIFE WAS UNABLE TO STOP AND HAD TO COAST TO A STOP AND PULL TO THE SHOULDER. IF THIS BRAKE FAILURE HAD HAPPENED AT ANOTHER PLACE OR TIME, THERE LIKELY WOULD HAVE BEEN A CATASTROPHIC ACCIDENT. CHEVROLET DEALER SAID THAT THE FRONT BRAKE LINE HAD FAILED AND FABRICATED A STAINLESS STEEL BRAKE LINE TO REPLACE THE ORIGINAL. THE INCIDENT COST ME $1100 TO REPLACE THE BRAKE LINE. THE SILVERADO HAD APPROXIMATELY 46,200 MILES ON IT AT THE TIME. IN A SECOND REPORT TO THE NHTSA, I REPORTED THAT THE REAR BRAKE LINE HAD FAILED ABOUT FIVE YEARS LATER AND AT 90,000 MILES. THIS SECOND FAILURE RESULTED IN ANOTHER HORRIFYING INCIDENT OF BEING UNABLE TO STOP THE SILVERADO WHEN THE BRAKES WERE PRESSED. *TR
WAS SITTING AT RED LIGHT AND BRAKE PEDAL STARTING GOING TO FLOOR AND STARTED ROLLING, SO I PUSHED HARDER AND STOPPED PULLED OVER IN A PARKING LOT . I GOT UNDER TRUCK AND BRAKE FLUID WAS LEAKING UNDER DRIVER DOOR, BRAKE LINE WAS LEAKING , THE LINES WERE RUSTY. ,AM GOING TO REPLACE ALL BRAKE LINES WITH STAINLESS STEEL LINES SO THE…
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WAS SITTING AT RED LIGHT AND BRAKE PEDAL STARTING GOING TO FLOOR AND STARTED ROLLING, SO I PUSHED HARDER AND STOPPED PULLED OVER IN A PARKING LOT . I GOT UNDER TRUCK AND BRAKE FLUID WAS LEAKING UNDER DRIVER DOOR, BRAKE LINE WAS LEAKING , THE LINES WERE RUSTY. ,AM GOING TO REPLACE ALL BRAKE LINES WITH STAINLESS STEEL LINES SO THEY WILL NOT RUST AGAIN. I CHECKED INTERNET AND SEEN THIS WAS A COMMON PROBLEM ON CHEVY TRUCKS. *TR
FRAME IS RUSTING ALONG WITH BUMPER AND ROCKER PANELS. *TR
I WAS DRIVING WITH A POTENTIAL BUYER RIDING ALONG. WE HAD REACHED AN OPEN FARM FIELD AT THE EDGE OF TOWN AND HAD ENGAGED THE 4X4 TO VERIFY IT. AFTER FOUR-WHEELING A BIT, WE HEADED BACK TO THE MAIN ROAD, BUT WHEN I ATTEMPTED TO SLOW FROM 35 MPH TO STOP AND DISENGAGE THE 4-WHEEL DRIVE, THE BRAKE PEDAL PLUNGED TO THE FLOOR WITHOUT…
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I WAS DRIVING WITH A POTENTIAL BUYER RIDING ALONG. WE HAD REACHED AN OPEN FARM FIELD AT THE EDGE OF TOWN AND HAD ENGAGED THE 4X4 TO VERIFY IT. AFTER FOUR-WHEELING A BIT, WE HEADED BACK TO THE MAIN ROAD, BUT WHEN I ATTEMPTED TO SLOW FROM 35 MPH TO STOP AND DISENGAGE THE 4-WHEEL DRIVE, THE BRAKE PEDAL PLUNGED TO THE FLOOR WITHOUT ANY FAILURE WARNING, AND WE CONTINUED SAILING OUT ONTO THE STATE HIGHWAY COMPLETELY UNRESTRICTED AND STILL TRAVELING AT ABOUT 25 MPH. I WAS ABLE TO TURN ENOUGH TO STAY MOSTLY OUT OF THE OPPOSITE DITCH, BUT I HAD TO IMMEDIATELY SWERVE BACK INTO THE DITCH, FINALLY ROLLING TO A STOP AS ONCOMING TRAFFIC PASSED. THANK GOD WE NARROWLY MISSED BEING IN A SEVERE ACCIDENT. WE WERE BOTH SHOOK UP BY THE NEAR MISS, AND I SAT FOR A MINUTE TRYING TO COLLECT MY NERVES BEFORE HEADING BACK TO TOWN. I SWITCHED THE 4X4 BACK INTO TWO-WHEEL DRIVE, BUT KEPT THE AUTOMATIC TRANSMISSION IN SECOND GEAR BACK TO HOME. I TOOK A ROUTE THAT HAD VERY FEW STOP SIGNS, BUT HAD TO SLOW FOR THOSE FEW BY DOWNSHIFTING INTO FIRST GEAR, USING THE TOW/HAUL FEATURE ON THE TRANSMISSION TO INCREASE ANY AVAILABLE ENGINE BRAKING, AND PUMPING THE NOW USELESS BRAKE PEDAL LIKE A MANIAC. I GOT THE TRUCK AND US BACK HOME WITHOUT FURTHER INCIDENT, BUT ALSO WITHOUT ANY DASH BOARD WARNINGS WHATSOEVER. NEEDLESS TO SAY, I LOST THE SALE. I CHECKED UNDER THE TRUCK, AND IT WAS DRIPPING BRAKE FLUID STEADILY FROM TWO DIFFERENT PLACES. A FAULTY IGNITION SWITCH WARRANTS A SAFETY RECALL, BUT TOTAL BRAKE FAILURE DUE TO CORRODED BRAKE LINES DOESN'T? BRAKE LINES AND FUEL LINES SHOULD NEVER CORRODE UNDER ANY CONDITIONS! GM PUT STAINLESS STEEL EXHAUSTS ON THESE TRUCKS...... THEY SHOULD HAVE KNOWN ENOUGH TO DO THE SAME WITH BRAKE LINES, AND IT'S ABOUT TIME THE NHTSA STOPS DRAGGING ITS FEET AND MAKES GM ACCOUNTABLE FOR THE ENTIRE DEBACLE OF FAILURES OF THIS FIRST AND MOST IMPORTANT SAFETY SYSTEM! *TT
ON APRIL 9, 2014 AT ABOUT 9:00 AM, I WAS TRAVELING OUTSIDE OF MY NEIGHBORHOOD IN LIGHT TRAFFIC WHEN I CAME TO STOP BEHIND A CAR. MY BRAKES FAILED ON MY 1999 CHEVY SILVERADO 1500 WITHOUT ANY WARNING. LUCKILY I KNOW THE AREA AND I LOOK FOR AN UPHILL STREET AND ABLE TO STOP WITHOUT ANY INCIDENT. UPON INVESTIGATION I FOUND THE B…
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ON APRIL 9, 2014 AT ABOUT 9:00 AM, I WAS TRAVELING OUTSIDE OF MY NEIGHBORHOOD IN LIGHT TRAFFIC WHEN I CAME TO STOP BEHIND A CAR. MY BRAKES FAILED ON MY 1999 CHEVY SILVERADO 1500 WITHOUT ANY WARNING. LUCKILY I KNOW THE AREA AND I LOOK FOR AN UPHILL STREET AND ABLE TO STOP WITHOUT ANY INCIDENT. UPON INVESTIGATION I FOUND THE BRAKE LINES BLEW AND DUMPED FLUID ON THE GROUND. ALL BRAKE LINES CORRODE AND NEED TO BE REPLACED. A LOCAL MECHANICAL SHOP REPLACED ALL OF THEM FOR SEVERAL THOUSANDS DOLLARS. *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.