IllustrationCOMING TO RED LIGHT PUSH BRAKE PEDAL NO BRAKES, BRAKE LINE BROKE DUE TO RUST. *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 reportsTL* 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.
WHILE DRIVING ON THE HIGHWAY MY BRAKE LIGHT CAME ON. THEN AS I APPLIED THE BRAKES UNDER NORMAL USAGE I FELT THE PEDAL GO ALL THE WAY TO FLOOR. WAS ABLE TO GET IT HOME. TOOK TO DEALER WHO SAID ALL 4 BRAKE LINES HAD BURST DUE TO CORROSION. CHARGED ME OVER $1500.00 TO FIX FOR NEW LINES AND BLEEDING THE SYSTEM. *TR
AFTER FILLING UP MY TRUCK AND GOT SPEED UP TO ABOUT 65MPH MY GAS GAUGE WENT TO EMPTY AND THEN WOULD COME BACK UP AFTER HITTING A BUMP IN THE ROAD OR ROCKING THE TRUCK BACK AND FORTH , ALSO THE LIGHT ON THE GEAR SHIFT LEVER KEPT GOING OUT AND C…
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AFTER FILLING UP MY TRUCK AND GOT SPEED UP TO ABOUT 65MPH MY GAS GAUGE WENT TO EMPTY AND THEN WOULD COME BACK UP AFTER HITTING A BUMP IN THE ROAD OR ROCKING THE TRUCK BACK AND FORTH , ALSO THE LIGHT ON THE GEAR SHIFT LEVER KEPT GOING OUT AND COULDN'T TELL WHAT GEAR I WAS IN, COULD PECK ON CONSOLE AND LIGHT MIGHT COME BACK ON BUT STAYS OFF MOST OF THE TIME NOW. NOW THE FUEL GAUGE STILL ACTS UP AND IT DOES NOT GIVE AND ACCURATE READING.HAVE TO SET MY TRIP TIMER EACH TIME I FILLUP SO I WILL KNOW HOW MUCH GAS I HAVE UNLESS SOMEONE STEALS A LOT OF IT THEN I USUALLY RUN OUT OF GAS ALONG SIDE THE ROAD. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
ON AT LEAST 6 OCCASIONS SINCE I PURCHASED THIS TRUCK, THE BRAKE LINES HAVE FAILED AND RUPTURED. IN ALL CASES, THE PEDAL SANK TO THE FLOOR, AND ONLY VERY LIMITED BRAKING WAS AVAILABLE. I HAVE PATCHED THE BRAKE LINES IN MANY PLACES. MOST RECENTLY TODAY, A BRAKE LINE FAILED AT THE FRONT RIGHT SIDE NEAR THE FRAME RAIL. I MADE THE …
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ON AT LEAST 6 OCCASIONS SINCE I PURCHASED THIS TRUCK, THE BRAKE LINES HAVE FAILED AND RUPTURED. IN ALL CASES, THE PEDAL SANK TO THE FLOOR, AND ONLY VERY LIMITED BRAKING WAS AVAILABLE. I HAVE PATCHED THE BRAKE LINES IN MANY PLACES. MOST RECENTLY TODAY, A BRAKE LINE FAILED AT THE FRONT RIGHT SIDE NEAR THE FRAME RAIL. I MADE THE NEEDED PATCH REPAIR, AND THE TRUCK IS OK FOR NOW. I HAVE INSPECTED THOSE SECTIONS OF THE BRAKE LINES WHICH HAVE NOT BEEN REPLACED, AND CAN TELL THAT THEY ARE DETERIORATING, AND WILL BE THE NEXT TO FAIL. I AM WORRIED TO DRIVE THIS TRUCK WHEN I MAY NEED TO STOP IN AN EMERGENCY SITUATION, AND WILL NOT HAVE ADEQUATE STOPPING DISTANCE. *TR
BRAKE LINE FAILURE DUE TO CORROSION TWO DIFFERENT TIMES VERY LUCKY WAS NOT GOING FAST, AFTER INSPECTION ALL BRAKE LINES ARE BADLY RUSTED. *TR
WHILE DRIVING ON A FREEWAY IN HEAVY TRAFFIC THREE VEHICLES IN FRONT OF ME CAME TO A SUDDEN STOP, TWO OF THEM MOVED TO THE LEFT. I HAD PLENTY OF TIME TO STOP AND WHEN I PRESSED THE BRAKE PEDAL MY BRAKES STARTED WORKING NORMALLY. AS I GOT CLOSER, ABOUT TWO CAR LENGTHS, I LOST BRAKING POWER AND SPED UP AS IF I HAD HIT AN ICY PATCH …
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WHILE DRIVING ON A FREEWAY IN HEAVY TRAFFIC THREE VEHICLES IN FRONT OF ME CAME TO A SUDDEN STOP, TWO OF THEM MOVED TO THE LEFT. I HAD PLENTY OF TIME TO STOP AND WHEN I PRESSED THE BRAKE PEDAL MY BRAKES STARTED WORKING NORMALLY. AS I GOT CLOSER, ABOUT TWO CAR LENGTHS, I LOST BRAKING POWER AND SPED UP AS IF I HAD HIT AN ICY PATCH IN THE ROAD. I WENT TO THE RIGHT AND HIT THE VEHICLE IN FRONT OF ME IN THE RIGHT REAR QUARTER. AT THIS POINT I COASTED TO A STOP ON THE SHOULDER. WHEN I WAS ABLE TO CHECK OUT MY TRUCK I FOUND A LOT OF BRAKE FLUID IN THE RIGHT FRONT WHEEL WELL AREA THAT APPEARED TO HAVE COME FROM THE METAL BRAKE LINE WHICH WAS RUSTY. THE TRUCK WAS SO HEAVILY DAMAGED I COULD NOT GET A PICTURE OR SEE THE HOLE IN THE LINE. THE AIR BAGS DID NOT GO OFF. THE TRUCK WAS TOTALED. *TR
MY VEHICLE WAS WRECKED BY ANOTHER VEHICLE ON THE PASSENGER SIDE. THE VEHICLE THAT HIT MY VEHICLE WAS GOING EXCESSIVE SPEEDS (50-60MPH) AND RAN A STOP SIGN. DURING THE INCIDENT A PASSENGER WAS THROWN FROM THE VEHICLE OUT OF THE PASSENGER SIDE WINDOW. THE FRONT AXEL WAS BROKEN AND THE ENTIRE PASSENGER SIDE WHEEL WAS TORN OFF INCL…
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MY VEHICLE WAS WRECKED BY ANOTHER VEHICLE ON THE PASSENGER SIDE. THE VEHICLE THAT HIT MY VEHICLE WAS GOING EXCESSIVE SPEEDS (50-60MPH) AND RAN A STOP SIGN. DURING THE INCIDENT A PASSENGER WAS THROWN FROM THE VEHICLE OUT OF THE PASSENGER SIDE WINDOW. THE FRONT AXEL WAS BROKEN AND THE ENTIRE PASSENGER SIDE WHEEL WAS TORN OFF INCLUDING THE AXEL AND BRAKES. THERE WAS SO MUCH DAMAGE DONE TO THE FRONT PASSENGER SIDE OF THE VEHICLE IT IS A MAJOR CONCERN THAT NO AIRBAGS WERE DEPLOYED DURING IMPACT. THE VEHICLE ADVERTISES DRIVER AND PASSENGER AIRBAGS. *TR
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
A FEW YEARS AGO I WAS DRIVING MY TRUCK (1999 CHEVROLET SILVERADO Z71 4X4) ON A CONNECTING ROAD (DIRT) WHEN I HIT THE BRAKES TO TURN. THE ABS PUMP STARTED RUNNING. I THOUGHT IT WAS ODD THAT IT KEPT RUNNING BUT DIDN'T THINK ABOUT IT. WHEN I RETURNED BACK TO MY APARTMENT, IT WAS STILL RUNNING. I GOT UP THE NEXT MORNING AND THE BATT…
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A FEW YEARS AGO I WAS DRIVING MY TRUCK (1999 CHEVROLET SILVERADO Z71 4X4) ON A CONNECTING ROAD (DIRT) WHEN I HIT THE BRAKES TO TURN. THE ABS PUMP STARTED RUNNING. I THOUGHT IT WAS ODD THAT IT KEPT RUNNING BUT DIDN'T THINK ABOUT IT. WHEN I RETURNED BACK TO MY APARTMENT, IT WAS STILL RUNNING. I GOT UP THE NEXT MORNING AND THE BATTERY WAS DEAD. AFTER CHARGING THE BATTERY, I NOTICED THE ABS CONTROL UNIT (UNDER THE CAB ON THE DRIVERS SIDE) WAS STILL RUNNING. I TOOK IT TO A CHEVROLET DEALERSHIP WHICH PROCEEDED TO TELL ME I NEEDED A NEW ABS UNIT $1100. AS I CANNOT AFFORD AN $1100 PART ON A 9 YEAR OLD TRUCK. I JUST UNPLUGGED IT. BOTH THE BRAKE AND THE ABS LIGHT STAY ON IN THE CAB ANY TIME THE ENGINE IS RUNNING. I HAVE ATTEMPTED TO FIND A USED UNIT TO NO AVAIL. THE VEHICLE NOW HAS OVER 240000 MILES ON IT, WITH EXCEPTION OF A LITTLE RUST, THE ONLY ISSUE I HAVE IS THE ANTI-LOCK BRAKING SYSTEM. *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.