IllustrationABS SYSTEM ENGAGES WHEN BRAKING ON ROUGH PAVEMENT SUCH AS RUMBLE STRIPS. ABS LIGHT COMES ON INTERMITTENTLY. THIS PROBLEM HAS BEEN ONGOING FOR MORE THAN 4 YEARS, BUT WAS REPORTED ON JANUARY 9 2009. *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
Service Brakes, Hydraulic complaints
222 reportsVEHICLE ANTILOCK BRAKES ACTIVATE AT LOW SPEED WHEN THEY SHOULD NOT INCREASING STOPPING DISTANCE SUBSTANTIALLY. THE ISSUE IS DESCRIBED IN RECALL 2005-630-2438. THE VEHICLE WAS TAKEN IN FOR RECALL REPAIR IN JULY 2006. THE VEHICLE DID NOT EXHIBIT THE RECALL ISSUES AT THE TIME OF RECALL REPAIR. THE VEHICLE NOW HAS THE ISSUES BUT…
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VEHICLE ANTILOCK BRAKES ACTIVATE AT LOW SPEED WHEN THEY SHOULD NOT INCREASING STOPPING DISTANCE SUBSTANTIALLY. THE ISSUE IS DESCRIBED IN RECALL 2005-630-2438. THE VEHICLE WAS TAKEN IN FOR RECALL REPAIR IN JULY 2006. THE VEHICLE DID NOT EXHIBIT THE RECALL ISSUES AT THE TIME OF RECALL REPAIR. THE VEHICLE NOW HAS THE ISSUES BUT CHEVY INSISTS I AM RESPONSIBLE FOR THE REPAIR SINCE THEY HAVE ALREADY TAKEN CARE OF THE RECALL. *TR
TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTICE IN 2006 REGARDING NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE DEALER REMOVED THE WHEEL SPEED SENSOR AND THOROUGHLY CLEANED THE WHEEL SPEED SENSOR MOUNTING SURFACE ON THE BEARING; HOWEVER, THE FAILURE RECUR…
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TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE CONTACT RECEIVED A RECALL NOTICE IN 2006 REGARDING NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE DEALER REMOVED THE WHEEL SPEED SENSOR AND THOROUGHLY CLEANED THE WHEEL SPEED SENSOR MOUNTING SURFACE ON THE BEARING; HOWEVER, THE FAILURE RECURRED. WHILE PULLING INTO A PARKING SPACE AT 5 MPH, THE VEHICLE FAILED TO STOP BECAUSE THE ABS ENGAGED. THE CONTACT CRASHED THE VEHICLE INTO A BRICK WALL. THERE WERE NO INJURIES. THE VEHICLE WAS DRIVEN TO AN AUTO CENTER AND THE MECHANIC PULLED THE FUSE FROM THE ANTILOCK BRAKE. THE FAILURE IS INTERMITTENT. THE CONTACT WAS INFORMED THAT THE HUB ASSEMBLY NEEDED TO BE REPAIRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND THEY STATED THAT SHE WOULD BE RESPONSIBLE FOR THE REPAIR COSTS BECAUSE THE VEHICLE WAS PREVIOUSLY REPAIRED ACCORDING TO THE RECALL. THE FAILURE MILEAGE WAS 190,000. UPDATED 02-23-09 *BF UPDATED 02/24/09. *JB
BRAKE LINE FAILURE!! WIFE CAME TO PICK ME UP AT WORK SEEN FLUID DRIPPING FROM UNDERNEATH TRUCK -BRAKE FLUID GOT HOME AND FOUND THE LINE WAS ROTTED BY THE BACK DRIVERS SIDE WHEEL REPLACED DAMAGED SECTION BLOWN OUT THE 2ND TIME BY ABS MOTOR REPLACED BAD SECTION AGAIN BLOWN OUT 3RD TIME INSPECTED ENTIRE BRAKE LINE FOUND CORROSION …
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BRAKE LINE FAILURE!! WIFE CAME TO PICK ME UP AT WORK SEEN FLUID DRIPPING FROM UNDERNEATH TRUCK -BRAKE FLUID GOT HOME AND FOUND THE LINE WAS ROTTED BY THE BACK DRIVERS SIDE WHEEL REPLACED DAMAGED SECTION BLOWN OUT THE 2ND TIME BY ABS MOTOR REPLACED BAD SECTION AGAIN BLOWN OUT 3RD TIME INSPECTED ENTIRE BRAKE LINE FOUND CORROSION EVERYWHERE I LOOKED. CONTACTED MY DEALER AND WAS TOLD QUITE RUDELY THAT THERE WAS NOTHING IN CHEVROLETS RECALLS ABOUT BRAKE LINES. HAVE ALSO REPLACED THE BACK ROTORS (TWICE). MY ABS MOTOR ALSO STARTED ACTING UP PULLED FUSE. HOW MANY REPORTS DO YOU NHTSA HAVE TO GET BEFORE YOU MAKE THIS COMPANY FIX THEIR BAD DESIGN? I'M SURE IF SOMEONE IN YOUR FAMILY WAS HURT IN ONE OF THESE VEHICLES OR HIT BY ONE THAT A MANDATORY RECALL WOULD HAPPEN IN A SNAP. OR DOES CHEVROLET HAVE YOU IN THEIR BACKPOCKET................ *TR
TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING 15 MPH, THE CONTACT HEARD A PULSATING NOISE WHENEVER THE BRAKE PEDAL WAS DEPRESSED. THE ANTILOCK BRAKES ACTIVATED SUDDENLY AND HE CRASHED INTO ANOTHER VEHICLE. THE DEALER STATED THAT THERE WERE NO RECALLS AVAILABLE FOR THE FAILURE AND INFORMED THE CONTACT TO C…
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TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING 15 MPH, THE CONTACT HEARD A PULSATING NOISE WHENEVER THE BRAKE PEDAL WAS DEPRESSED. THE ANTILOCK BRAKES ACTIVATED SUDDENLY AND HE CRASHED INTO ANOTHER VEHICLE. THE DEALER STATED THAT THERE WERE NO RECALLS AVAILABLE FOR THE FAILURE AND INFORMED THE CONTACT TO CALL GENERAL MOTORS. GENERAL MOTORS REFUSED TO REPAIR THE FAILURE. THE ANTILOCK BRAKE WAS REPAIRED TWO YEARS PRIOR TO THE RECALL. THE FAILURE AND CURRENT MILEAGES WERE 117,145.
ABS MODULE WENT OUT ON 1999 SILVERADO THAT HAS 51000 MILES. SYMPTOMS ARE THAT THE MODULE/PUMP CONTINUES RUNNING EVEN WITH IGNITION TURNED OFF. IN ADDITION, ABS DASH LIGHT IS ON. DEALER STATES THAT REPAIR WILL BE ROUGHLY $1000. INTERNET CHAT ROOM FOR LIKE VEHICLE HAS LITERALLY 100'S OF PEOPLE WITH EXACT SAME PROBLEM. ONLY WAY TO …
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ABS MODULE WENT OUT ON 1999 SILVERADO THAT HAS 51000 MILES. SYMPTOMS ARE THAT THE MODULE/PUMP CONTINUES RUNNING EVEN WITH IGNITION TURNED OFF. IN ADDITION, ABS DASH LIGHT IS ON. DEALER STATES THAT REPAIR WILL BE ROUGHLY $1000. INTERNET CHAT ROOM FOR LIKE VEHICLE HAS LITERALLY 100'S OF PEOPLE WITH EXACT SAME PROBLEM. ONLY WAY TO STOP MODULE/PUMP FROM RUNNING, ASIDE FROM SPENDING $1000, IS TO PULL 60 AMP FUSE THAT ENABLES THE ABS BRAKES. *TR
TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO C1500 EXTENDED CAB. THE CONTACT NOTICED THAT BOTH OF THE TAILGATE SUPPORT CABLES FAILED, WHICH CAUSED THE TAILGATE TO DROP DOWN TO THE BUMPER WHILE DRIVING APPROXIMATELY 55 MPH. SHE HAD TO EXCESSIVELY PUMP THE BRAKE PEDAL IN ORDER TO EFFECTIVELY STOP THE VEHICLE. ON ONE OCCASION,…
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TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO C1500 EXTENDED CAB. THE CONTACT NOTICED THAT BOTH OF THE TAILGATE SUPPORT CABLES FAILED, WHICH CAUSED THE TAILGATE TO DROP DOWN TO THE BUMPER WHILE DRIVING APPROXIMATELY 55 MPH. SHE HAD TO EXCESSIVELY PUMP THE BRAKE PEDAL IN ORDER TO EFFECTIVELY STOP THE VEHICLE. ON ONE OCCASION, THE BRAKE PEDAL NEARLY EXTENDED TO THE FLOOR. SHE TOOK THE VEHICLE TO THE AUTO REPAIR SHOP AND WAS INFORMED THAT THE ABS SENSORS ON THE BRAKES WERE THE CAUSE OF THE FAILURE. THE DEALER STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBERS 06V066000 (STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS) AND 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE MANUFACTURER HAS NOT BEEN NOTIFIED. THE CURRENT MILEAGE WAS APPROXIMATELY 97,000 AND FAILURE MILEAGE WAS APPROXIMATELY 93,000.
THE INCIDENT HAPPENED WHILE DRIVING MY 1999 CHEVROLET SILVERADO 1500. I WAS APPLYING THE BRAKES TO COME TO A STOP AND ONCE MY SPEED WENT BELOW 5 MILES PER HOUR THE ABS KICKED IN. THIS PREVENTED ME FROM STOPPING MY VEHICLE IMMEDIATELY. I HAD TO SWERVE TO THE SIDE OF THE ROAD TO AVOID HITTING THE VEHICLE IN FRONT OF ME. THERE …
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THE INCIDENT HAPPENED WHILE DRIVING MY 1999 CHEVROLET SILVERADO 1500. I WAS APPLYING THE BRAKES TO COME TO A STOP AND ONCE MY SPEED WENT BELOW 5 MILES PER HOUR THE ABS KICKED IN. THIS PREVENTED ME FROM STOPPING MY VEHICLE IMMEDIATELY. I HAD TO SWERVE TO THE SIDE OF THE ROAD TO AVOID HITTING THE VEHICLE IN FRONT OF ME. THERE WAS NO DAMAGE TO ANYONE OR PROPERTY. THIS BEGAN HAPPENING ON A REGULAR BASIS AFTER THIS EVENT. I HAD TO REMOVE THE MAIN FUSE FOR THE ABS SYSTEM TO PREVENT IT FROM RECURRING. I AM WAITING TO HAVE MY VEHICLE LOOKED AT BY A MECHANIC. MY VEHICLE WAS INCLUDED IN A RECALL FOR A WHEEL SPEED SENSOR WITHIN THE PAST TWO YEARS. *TR
ABS MODULE FAILURE. *TR
1999 CHEVY SILVERADO 4 WHEEL DRIVE ABS BRAIN BOARD FAILED. *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.