NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
164 reportsClear category filter55,500 miles · Aug 7, 2006
Service Brakes, Hydraulic
DT*: THE CONTACT STATED WHEN THE VEHICLE WAS TAKEN TO A PRIVATE REPAIR SHOP FOR MAINTENANCE, THE MECHANIC OBSERVED THAT THE METAL ON THE REAR ROTOR SHIELDS WAS RUSTED THROUGH. THERE WAS A NHTSA RECALL # 05V379000, PERTAINING TO CORROSION OF THE ANTILOCK SERVICE BRAKES. THE VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VI…
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DT*: THE CONTACT STATED WHEN THE VEHICLE WAS TAKEN TO A PRIVATE REPAIR SHOP FOR MAINTENANCE, THE MECHANIC OBSERVED THAT THE METAL ON THE REAR ROTOR SHIELDS WAS RUSTED THROUGH. THERE WAS A NHTSA RECALL # 05V379000, PERTAINING TO CORROSION OF THE ANTILOCK SERVICE BRAKES. THE VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN.
NHTSA ODI #10164699
77,100 miles · Jul 10, 2006
Service Brakes, Hydraulic
ABS SYSTEM FAILURE ABS LIGHT ON 77,000 MILES 2002 SILVERADO GM WILL NOT ADMIT IT HAS A MANUFACTURING DEFECT WITH THE ABS SYSTEM - AFTER SEARCHING THE INTERNET I FIND THERE ARE AN ABUNDANT OF ABS FAILURES. *JB
NHTSA ODI #10161949
68,000 miles · Jul 5, 2006
Service Brakes, Hydraulic
DT*: THE CONTACT STATED, WHILE PULLING INTO A PARKING SPACE AT 3 MPH, THERE WAS AN UNWARRANTED ABS ACTIVATION HINDERING THE BRAKES FROM STOPPING THE VEHICLE. THE VEHICLE'S BRAKES WERE INSPECTED AND CLEANED BY DEALER'S MECHANIC. THIS INCIDENT RELATES TO GM'S RECALL # 05068 (WHEEL SPEED SENSOR). THE FAILURE OCCURRED 15 SEPARATE TI…
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DT*: THE CONTACT STATED, WHILE PULLING INTO A PARKING SPACE AT 3 MPH, THERE WAS AN UNWARRANTED ABS ACTIVATION HINDERING THE BRAKES FROM STOPPING THE VEHICLE. THE VEHICLE'S BRAKES WERE INSPECTED AND CLEANED BY DEALER'S MECHANIC. THIS INCIDENT RELATES TO GM'S RECALL # 05068 (WHEEL SPEED SENSOR). THE FAILURE OCCURRED 15 SEPARATE TIMES SINCE THE INSPECTION.*AK UPDATED 7/18/2006 - *NM
NHTSA ODI #10161492
66,000 miles · Jun 26, 2006
Service Brakes, Hydraulic
I OWN A 2002 CHEVROLET SILVERADO 2WD. WHEN APPLYING THE BRAKES AND COMING TO A STOP, THERE IS A PULSATION. IT FEELS AS IF THE ABS IS TAKING OVER AND RELEASING, AND THEN REAPPLYING THE BRAKING ACTION, RAPIDLY, AS I COME TO A STOP. I SPOKE TO A GM REPRESENTATIVE ABOUT A RECALL THAT HAS BEEN ISSUED REGARDING THIS PROBLEM. THE GM RE…
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I OWN A 2002 CHEVROLET SILVERADO 2WD. WHEN APPLYING THE BRAKES AND COMING TO A STOP, THERE IS A PULSATION. IT FEELS AS IF THE ABS IS TAKING OVER AND RELEASING, AND THEN REAPPLYING THE BRAKING ACTION, RAPIDLY, AS I COME TO A STOP. I SPOKE TO A GM REPRESENTATIVE ABOUT A RECALL THAT HAS BEEN ISSUED REGARDING THIS PROBLEM. THE GM RECALL NUMBER IS 05068. THE REPRESENTATIVE TOLD ME THAT MY VIN NUMBER WAS INCLUDED IN THE RECALL, BUT BECAUSE I DON'T LIVE IN A "SALT BELT" STATE, MY VEHICLE IS NOT BEING RECALLED (I LIVE IN FLORIDA). APPARENTLY, IT IS THE ROAD SALT THAT IS USED DURING THE WINTER MONTHS THAT CORRODES THE ABS WHEEL SENSORS AND LEADS TO THIS PROBLEM. AND, ALTHOUGH I DO NOT LIVE IN A STATE THAT USES ROAD SALT, I DO USE MY VEHICLE TO TOW AND LAUNCH A BOAT IN THE SALT WATER. I BELIEVE THAT BECAUSE OF THIS USE, MY VEHICLE SHOULD BE INCLUDED IN THE RECALL. *JB
NHTSA ODI #10160739
79,447 miles · May 24, 2006
Service Brakes, Hydraulic
I DRIVE A 2002 CHEVROLET SILVERADO Z71. IN NOVEMBER 2004 THE ABS BRAKE SYSTEM WOULD ACTIVATE EVERY TIME I WOULD PRESS THE BRAKE AT SPEEDS LESS THAN 10 MPH. I TOOK IT TO THE GM SERVICE AND THEY HAD TO REPLACE THE ENTIRE HUB ASSEMBLY BECAUSE THE SENSORS WERE CORRODED. A RECALL WAS ISSUED ON THE SENSOR PROBLEM. RECENTLY I HAVE …
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I DRIVE A 2002 CHEVROLET SILVERADO Z71. IN NOVEMBER 2004 THE ABS BRAKE SYSTEM WOULD ACTIVATE EVERY TIME I WOULD PRESS THE BRAKE AT SPEEDS LESS THAN 10 MPH. I TOOK IT TO THE GM SERVICE AND THEY HAD TO REPLACE THE ENTIRE HUB ASSEMBLY BECAUSE THE SENSORS WERE CORRODED. A RECALL WAS ISSUED ON THE SENSOR PROBLEM. RECENTLY I HAVE AN ABS LIGHT THAT COMES ON EVERYTIME I START MOVING. OCCASIONALLY THE BRAKE LIGHT ALSO COMES ON. I TOOK IT IN TO GM SERVICE AND WAS TOLD THAT THE ABS PUMP ASSY AND MODULE WERE BOTH BROKEN AND REPAIR COSTS WOULD BE ABOUT $2000. I WAS TOLD THAT THE BRAKES WORKED FINE, I JUST WOULDN'T HAVE THE ABS FEATURE. HOWEVER I BELIEVE THE ABS SYSTEM IS AN IMPORTANT SAFETY FEATURE ON A VEHICLE, ESPECIALLY IN AREAS THAT EXPERIENCE INCLEMENT WEATHER. IN ADDITION, THE SERVICE REPRESENTATIVE TOLD ME THAT THE ABS LIGHT IS TRIGGERING THE OCCASIONAL BRAKE LIGHT. THE FALSE POSITIVE IS DANGEROUS BECAUSE IT CAN CAUSE COMPLACENCY WHERE DRIVERS WOULD IGNORE A REAL BRAKE FAILURE. I UNDERSTAND THAT IT'S IMPOSSIBLE FOR AUTOMOBILE COMPONENTS TO LAST INDEFINITELY. HOWEVER, IT'S OBVIOUS THAT GENERAL MOTORS TRUCKS HAVE EFFICIENT BRAKE SYSTEMS, ESPECIALLY CONCERNING THE ABS. *JB
NHTSA ODI #10158205
Mileage unknown · Feb 7, 2006
Service Brakes, Hydraulic
SPONGY BRAKES, NO BRAKES AT TIMES. LAST INCIDENT FEB. 1, 2006 WHILE BACKING IN DRIVE. PUSHED ON BRAKE AND PEDAL WENT TO FLOOR. A LOUD RATTLING, HAMMERING NOISE CAME FROM VEHICLE AND NO BRAKING FELT. I HAVE COMPLAINED ABOUT THIS SINCE I BOUGHT THE TRUCK IN 2003 AT 22586 MILES. THE MASTER CYLINDER WAS REBUILT ABOUT APRIL 23, 2004…
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SPONGY BRAKES, NO BRAKES AT TIMES. LAST INCIDENT FEB. 1, 2006 WHILE BACKING IN DRIVE. PUSHED ON BRAKE AND PEDAL WENT TO FLOOR. A LOUD RATTLING, HAMMERING NOISE CAME FROM VEHICLE AND NO BRAKING FELT. I HAVE COMPLAINED ABOUT THIS SINCE I BOUGHT THE TRUCK IN 2003 AT 22586 MILES. THE MASTER CYLINDER WAS REBUILT ABOUT APRIL 23, 2004 AND IT DIDN'T HELP; IN FACT WE ABOUT LOST ALL BRAKING GOING HOME FROM DEALER. I PHONED THE DEALER AND HE ORDERED A NEW MASTER CYLINDER. IT WAS REPLACED MAY 3, 2004 BUT THE PEDAL WAS STILL SPONGY AND BRAKING VERY POOR. WHEN STOPPED AND ENGINE RUNNING YOU CAN PUSH THE BRAKE PEDAL CLEAR TO THE FLOOR. I HAVE BEEN TOLD THIS IS NORMAL. WELL, NORMAL ALMOST CAUSED A WRECK ON A DOWN HILL T ROAD WITH MY WIFE WITH ME. I PHONED CHEVROLET CUSTOMER ASSISTANCE CENTER (FILE 1-212176923) FOR HELP. A WASTE OF TIME. I PHONED CHEVROLET MOTOR DIVISION (1800-222-1020) AND ALL THEY SUGGESTED WAS TO TAKE THE TRUCK BACK TO THE DEALER, A 30 MILE DRIVE ONE WAY. THEY DIDN'T HELP IN FOUR OTHER VISITS . I DID TAKE IT BACK ON JAN. 6, 2006 FOR A BRAKE RECALL ON WHEEL DETECTORS BUT IT DIDN'T HELP THE BRAKING A BIT. THANKS. *NM
NHTSA ODI #10149610
37,720 miles · Jan 30, 2006
EquipmentService Brakes, HydraulicSuspension
AT 37720 MILES ON 2002 CHEVROLET 4X4 PICKUP. TOOK VEHICLE TO DEALER FOR SAFETY INSPECTION AND SERVICE TO GM DEALERSHIP. WAS INFORMED THAT VEHICLE WOULD NOT PASS INSPECTION DUE TO BRAKE ROTORS AND PADS BEING RUSTED AND WORN OUT. THIS WAS IN MARCH 2005. IN OCTOBER 2005 RECEIVED RECALL NOTICE RELATING TO SEVERE CORROSION BETW…
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AT 37720 MILES ON 2002 CHEVROLET 4X4 PICKUP. TOOK VEHICLE TO DEALER FOR SAFETY INSPECTION AND SERVICE TO GM DEALERSHIP. WAS INFORMED THAT VEHICLE WOULD NOT PASS INSPECTION DUE TO BRAKE ROTORS AND PADS BEING RUSTED AND WORN OUT. THIS WAS IN MARCH 2005. IN OCTOBER 2005 RECEIVED RECALL NOTICE RELATING TO SEVERE CORROSION BETWEEN FRONT HUB/BEARING AND SPEED SENSOR. FILLED FOR A CLAIM REIMBURSEMENT DUE TO THE FACT THAT ALL PARTS WERE INTER RELATED. ALSO EVEN THE REPAIR INVOICE STATED WORN OUT/RUSTED. WAS INFORMED THAT NO REIMBURSEMENT WOULD BE PAID.*AK
NHTSA ODI #10148995
Mileage unknown · Nov 30, 2005
Service Brakes, Hydraulic
ON 2002 CHEVY SILVERADO 1500 W/ONLY 25,500 MILES, NOTICED A NOISE IN REAR BRAKES. WHEN ROTATING TIRES, DISCOVERED BOTH ROTORS WERE RUSTED AND CORRODED, BUT WITH PLENTY OF BRAKE PAD AND THEREBY CAUSING ABNORMAL WEAR ON BRAKE PADS. TOOK VEHICLE TO LOCAL GM DEALER FOR INSPECTION BY SERVICE PERSONNEL, WHO DETERMINED SAME PROBLEM, …
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ON 2002 CHEVY SILVERADO 1500 W/ONLY 25,500 MILES, NOTICED A NOISE IN REAR BRAKES. WHEN ROTATING TIRES, DISCOVERED BOTH ROTORS WERE RUSTED AND CORRODED, BUT WITH PLENTY OF BRAKE PAD AND THEREBY CAUSING ABNORMAL WEAR ON BRAKE PADS. TOOK VEHICLE TO LOCAL GM DEALER FOR INSPECTION BY SERVICE PERSONNEL, WHO DETERMINED SAME PROBLEM, BUT WOULD NOT PROVIDE GOOD WILL REPAIR. FOR OBVIOUS SAFETY REASONS, PURCHASED REPLACEMENT ROTORS AND BRAKE PADS AND COMPLETED REPAIRS ON OUR OWN. WE HAVE CONTACTED GM TO TRY TO OBTAIN REFUND OF OUR COSTS, BUT NOT YET RESOLVED THE ISSUE. RESEARCH INDICATES THAT GM IS AWARE OF THIS PROBLEM WITH BRAKE ROTORS. ADDITIONALLY THE VEHICLE STILL EXPERIENCES PROBLEM W/ABS SPEED SENSOR REQUIRING ADDITIONAL BRAKING DISTANCE AT SLOW SPEEDS, BUT WAS NOT INCLUDED IN THE FIRST RECALL BY GM. PREVIOUSLY REPORTED THIS COMPLAINT. *JB
NHTSA ODI #10144031
9,542 miles · Nov 8, 2005
Service Brakes, Hydraulic
DT: THE CONTACT RECEIVED A RECALL LETTER FOR THE ABS SENSORS HE HAD THE WORK PERFORMED, BUT THE ABS PUMP HAS GONE BAD. HE CONTACTED GENERAL MOTORS, AND THEY STATED THAT BECAUSE MAINTENANCE ON VEHICLE WAS NOT PERFORMED AT A GM DEALERSHIP THEY WOULD NOT ASSIST HIM WITH THE REPAIRS. *AK UPDATED 11/29/2005 - *NM
NHTSA ODI #10142180
68,000 miles · Oct 29, 2005
Service Brakes, Hydraulic
OUR SILVERADO HAS THE EXACT PROBLEM DESCRIBED IN RECALL #05V37900 FOR THE ANTI-LOCK BRAKES. BECAUSE WE ARE NOT CONSIDERED A "SALT BELT" STATE G.M. WILL NOT RECALL OUR TRUCK.*JB
NHTSA ODI #10141184
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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