NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
164 reportsClear category filter196,000 miles · Feb 13, 2012
Service Brakes, Hydraulic
HELP PLEASE. ANTI LOCK BRAKES LOCK UP OR GO TO FLOOR AT LOW SPEED. RECALL 05V379000 COVERS VEHICLES WITH THIS DEFECT REGISTERED IN COLD WEATHER STATES EXTENDING TO MARYLAND AND D.C. I LIVE IN VIRGINIA, BUT HAVE DRIVEN IN COVERED AREAS, INCLUDING MARYLAND, PENNSYLVANIA, WEST VIRGINIA AND D.C. MY VEHICLE HAS A SAFETY DEFECT THAT H…
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HELP PLEASE. ANTI LOCK BRAKES LOCK UP OR GO TO FLOOR AT LOW SPEED. RECALL 05V379000 COVERS VEHICLES WITH THIS DEFECT REGISTERED IN COLD WEATHER STATES EXTENDING TO MARYLAND AND D.C. I LIVE IN VIRGINIA, BUT HAVE DRIVEN IN COVERED AREAS, INCLUDING MARYLAND, PENNSYLVANIA, WEST VIRGINIA AND D.C. MY VEHICLE HAS A SAFETY DEFECT THAT HAS REQUIRED A RECALL. IT SHOULD NOT BE EXCLUDED SIMPLY BECAUSE IT IS REGISTERED ON THE OTHER SIDE OF A STATE LINE. *TR
NHTSA ODI #10447823
147,059 miles · Feb 4, 2012
Parking BrakeService Brakes, Hydraulic
SEVERE BRAKE FLUID LEAK ON MAIN STEEL LINE(S) UNDER DRIVERS SIDE ABOUT 1/2 WAY TOWARD THE REAR WHEELS. UNABLE TO DRIVE VEHICLE. PEDAL WENT TO FLOOR AS I WAS TRYING TO PUT THE VEHICLE IN GEAR. PUMPED BRAKES WITH NO INCREASE IN PEDAL. LOOKED UNDER VEHICLE AND BRAKE FLUID ON CEMENT. *KB
NHTSA ODI #10446640
90,400 miles · Jan 30, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN DRIVING BETWEEN 5-20 MPH AND DEPRESSING THE BRAKES, THERE WAS AN INCREASE IN STOPPING TIME. THE ABS LIGHT WOULD THEN ILLUMINATE ON THE INSTRUMENTAL PANEL. THE VEHICLE WAS REPAIRED FOR THE FAILURE UNDER NHTSA CAMPAIGN ID NUMBER: 05V379000 (SERVICE …
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN DRIVING BETWEEN 5-20 MPH AND DEPRESSING THE BRAKES, THERE WAS AN INCREASE IN STOPPING TIME. THE ABS LIGHT WOULD THEN ILLUMINATE ON THE INSTRUMENTAL PANEL. THE VEHICLE WAS REPAIRED FOR THE FAILURE UNDER NHTSA CAMPAIGN ID NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK) IN SEPTEMBER 2005. THE VEHICLE WAS LATER TAKEN TO THE DEALER WHERE THEY ADVISED THE CONTACT THAT SINCE THE RECALL HAD ALREADY BEEN PERFORMED ON THE VEHICLE, THEY WERE NOT ABLE TO ASSIST. THE MANUFACTURER WAS CONTACTED AND THEY OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 90,400.
NHTSA ODI #10445918
53,000 miles · Jan 17, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN BRAKING FROM 5MPH, THE ABS BRAKING SYSTEM WOULD ACTIVATE ERRONEOUSLY. THE VEHICLE WAS TAKEN TO THE DEALER FOR REPAIRS UNDER NHTSA CAMPAIGN ID NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC: ANTILOCK) HOWEVER, THE FAILURE PERSISTED. THE VEHICLE WAS N…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN BRAKING FROM 5MPH, THE ABS BRAKING SYSTEM WOULD ACTIVATE ERRONEOUSLY. THE VEHICLE WAS TAKEN TO THE DEALER FOR REPAIRS UNDER NHTSA CAMPAIGN ID NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC: ANTILOCK) HOWEVER, THE FAILURE PERSISTED. THE VEHICLE WAS NOT REPAIRED A SECOND TIME. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 53,000 AND THE CURRENT MILEAGE WAS 94,000.
NHTSA ODI #10444082
70,000 miles · Jan 6, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING AT 5 MPH, HE APPLIED THE BRAKES AND THE ANTI LOCK BRAKE SYSTEM ENGAGED. THE FAILURE RECURRED ON AN INTERMITTENT BASIS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS INFORMED THAT BOTH FRONT SPEED SENSORS NEEDED TO BE…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING AT 5 MPH, HE APPLIED THE BRAKES AND THE ANTI LOCK BRAKE SYSTEM ENGAGED. THE FAILURE RECURRED ON AN INTERMITTENT BASIS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CONTACT WAS INFORMED THAT BOTH FRONT SPEED SENSORS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 70,000. UPDATED 03/14/12*LJ
NHTSA ODI #10442699
108,700 miles · Dec 29, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH AND APPLIED THE BRAKES, BUT THE BRAKE PEDAL RELEASED ABRUPTLY TO THE FLOORBOARD. THE VEHICLE CONTINUED TO ACCELERATE. THE CONTACT SHIFTED INTO FIRST GEAR IN ORDER FOR THE VEHICLE TO STOP. THE VEHICLE WAS THEN TOWED TO THE RESIDENCE…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH AND APPLIED THE BRAKES, BUT THE BRAKE PEDAL RELEASED ABRUPTLY TO THE FLOORBOARD. THE VEHICLE CONTINUED TO ACCELERATE. THE CONTACT SHIFTED INTO FIRST GEAR IN ORDER FOR THE VEHICLE TO STOP. THE VEHICLE WAS THEN TOWED TO THE RESIDENCE FOR DIAGNOSIS. THE CONTACT DETECTED THE BRAKE LINES COMPLETELY RUSTED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOTIFIED AND THEY STATED THERE WAS NOT A RECALL RELATED TO THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 108,700.
NHTSA ODI #10441601
129,896 miles · Dec 23, 2011
Service Brakes, Hydraulic
ELECTRONIC BRAKE CONTROL MODULE EBCM (BRAKE TRACTION CONTROL MODULE) INTERNALLY SHORTED CAUSING PUMP TO RUN ALL THE TIME, EVEN WHEN VEHICLE IGNITION WAS TURNED OFF. DANGER OF ABS FAILURE AND FIRE WITHOUT UNIT REPLACEMENT. *TR
NHTSA ODI #10441126
Mileage unknown · Dec 21, 2011
Service Brakes, Hydraulic
REAR BRAKE LINE OVER DRIVERS SIDE WHEEL RUSTED THRU CHEVROLET 1500 2002 4 WHEEL DRIVE 4 DOOR LS. *TR
NHTSA ODI #10440926
Mileage unknown · Dec 19, 2011
Service Brakes, Hydraulic
FRONT SPEED SENSORS FAILED IN 2005 BEFORE THE RECALL ON MY 2002 CHEVY SILVERADO Z71. HAD RECALL TAKEN CARE OF IN 2005. THEY ARE FAILING AGAIN THIS YEAR 2011 AND NOW THE REAR BRAKE LINE JUST RUPTURED YESTERDAY 12/18/2011. MY HUSBAND AGREES THAT SALT AT IS PART OF THE PROBLEM WITH THE BRAKE LINES BUT THE ABS SENSORS IS AN ON GOI…
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FRONT SPEED SENSORS FAILED IN 2005 BEFORE THE RECALL ON MY 2002 CHEVY SILVERADO Z71. HAD RECALL TAKEN CARE OF IN 2005. THEY ARE FAILING AGAIN THIS YEAR 2011 AND NOW THE REAR BRAKE LINE JUST RUPTURED YESTERDAY 12/18/2011. MY HUSBAND AGREES THAT SALT AT IS PART OF THE PROBLEM WITH THE BRAKE LINES BUT THE ABS SENSORS IS AN ON GOING CHEVY PROBLEM IN THESE TRUCKS AND ONCE THE RECALL IS PERFORMED ONCE, THE FUTURE FAILURES ARE UP THE OWNER TO FIX AND COVER THE COST. MY TRUCK IS A 2002 BUT IT ONLY HAS 76,000 MILES ON IT. ALL THESE BRAKING ISSUES SHOULD NOT BE HAPPENING. AND SERIOUSLY THEY BUILD THESE RIGHT HERE TOO, ALTHOUGH MINE SAYS BUILT IN FORT WAYNE , INDIANA, YOU WOULD THINK THEY WOULD BE BETTER MADE. AND WHY DID THE STUFF START REALLY FAILING AFTER MY EXTENDED WARRANTY RAN OUT? GO FIGURE. *TR
NHTSA ODI #10440472
36,000 miles · Dec 14, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 10 MPH, THE ANTI LOCK BRAKING SYSTEM ENGAGED WITHOUT WARNING. THE CONTACT STATED THAT HE WAS UNABLE TO STOP THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO THE DEALER AND THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT R…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 10 MPH, THE ANTI LOCK BRAKING SYSTEM ENGAGED WITHOUT WARNING. THE CONTACT STATED THAT HE WAS UNABLE TO STOP THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO THE DEALER AND THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND THE CURRENT MILEAGE WAS 36,000. UPDATED 01/06/12 *BF THE CONSUMER STATED THE VEHICLE HAS SINCE BEEN REPAIRED. UPDATED 01/06/12 UPDATED 01/20/12
NHTSA ODI #10439978
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.
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