NHTSA owner reports · September 18, 2026 snapshot.
Parking Brake complaints
14 reportsClear category filter118,710 miles · Oct 11, 2011
Parking BrakeService Brakes, Hydraulic
ALL THIS DUE TO RUSTED OUT BRAKE LINES. ON 3/9/10 I WAS APPROACHING A STOP SIGN IN A 35MPH ZONE. I PUT MY FOOT ON THE BRAKE PEDAL AND THE PEDAL WENT TO THE FLOOR. I WAS ABLE TO GIVE IT A FEW PUMPS AND I STOPPED IN TIME. I IMMEDIATELY DROVE 4 BLOCKS TO AUTO SHOP. THE MECHANIC FOUND A RUPTURED BRAKE LINE GOING TO THE BACK BRAKE…
Read full complaint
ALL THIS DUE TO RUSTED OUT BRAKE LINES. ON 3/9/10 I WAS APPROACHING A STOP SIGN IN A 35MPH ZONE. I PUT MY FOOT ON THE BRAKE PEDAL AND THE PEDAL WENT TO THE FLOOR. I WAS ABLE TO GIVE IT A FEW PUMPS AND I STOPPED IN TIME. I IMMEDIATELY DROVE 4 BLOCKS TO AUTO SHOP. THE MECHANIC FOUND A RUPTURED BRAKE LINE GOING TO THE BACK BRAKES DUE TO RUST. FOUR DAYS LATER I HAD TO RETURN MY TRUCK TO THE SHOP BECAUSE MY BACK BRAKES WERE STICKING. I WAS INFORMED THAT RUST AND CORROSION HAD GOTTEN INTO THE BACK HOSES AND/OR CALIPERS AND WOULD NOT RELEASE PROPERLY. AT THAT TIME HE REPLACED THE REAR HOSES AND CALIPERS. ON 10/2/11 I HAD BRAKE FAILURE AGAIN. THIS TIME IT WAS THE FRONT BRAKES. MY MECHANIC INFORMED ME THAT IT WAS A BRAKE LINE COMING OFF THE ABS UNIT IN THE FRONT OF THE TRUCK. THERE ARE FIVE BRAKE LINES IN THAT AREA AND THEY WERE ALL RUSTED. HE SAID HE WOULD HAVE TO REPLACE ALL OF THEM BECAUSE THEY WOULD EVENTUALLY FAIL. AT THAT TIME, THE FRONT BRAKE CALIPERS WERE SO RUSTED THAT HE COULD NOT BLEED THE BRAKES, AND HE SUGGESTED TO REPLACE THE HOSES AND CALIPERS AND ALL FIVE BRAKE LINES, WHICH I DID. HE ALSO TOLD ME THERE IS A CROSS BRACE ON THE FRAME THAT WAS ALMOST RUSTED THRU AND NEEDED TO BE TAKEN TO A WELDER TO BE FIXED. *KB
NHTSA ODI #10429456
30,000 miles · Dec 9, 2010
Parking Brake
HAVE HAD A ISSUE WITH THE EMERGENCY BRAKE OF MY 1999 CHEVROLET SILVERADO AUTO TRANSMISSION SINCE IT WAS NEW. TOOK VEHICLE IN UNDER WARRANTY TO DEALER FOR REPAIR THEY ONLY ADJUSTED CABLE INSTEAD OF CHANGING PADS. STILL DID NOT SOLVE PROBLEM,WAS TOLD BY DEALER THAT LEVER GOING ALL THE WAY TO FLOOR WAS NORMAL AS THIS BRAKE WAS FOR …
Read full complaint
HAVE HAD A ISSUE WITH THE EMERGENCY BRAKE OF MY 1999 CHEVROLET SILVERADO AUTO TRANSMISSION SINCE IT WAS NEW. TOOK VEHICLE IN UNDER WARRANTY TO DEALER FOR REPAIR THEY ONLY ADJUSTED CABLE INSTEAD OF CHANGING PADS. STILL DID NOT SOLVE PROBLEM,WAS TOLD BY DEALER THAT LEVER GOING ALL THE WAY TO FLOOR WAS NORMAL AS THIS BRAKE WAS FOR PARKING NOT FOR EMERGENCIES AND WAS NOT MEANT TO STOP VEHICLE ONLY TO GRADUALLY SLOW IT DOWN OR HOLD ON A INCLINE.HAVE SINCE DISCOVERED THAT GM DID A RECALL BUT ONLY ON MODELS WITH MANUAL TRANSMISSIONS THE DIFFERENCE I STILL NEED A EMERGENCY BRAKE TOO, SHOULD THERE BE A RECALL FOR ALL MODELS WITH THAT PARKING BRAKE SYSTEM. FROM WHAT I HAVE READ AND BEEN TOLD THE PADS WERE DEPLOYED AND RUBBED EVEN WITHOUT DEPRESSING EMERGENCY BRAKE PEDAL AND THE PADS WORE OUT IN NO TIME AS WAS MY CASE. *TR
NHTSA ODI #10369776
73,000 miles · May 26, 2009
Parking BrakeService Brakes, Hydraulic
I HAVE A 1999 CHEVY SILVERADO. I HAVE HAD TO REPLACE THE BRAKE LINES DUE TO A RUPTURE AS I WAS COMING UPON A 4 WAY INTERSECTION. THANK GOD NOTHING WAS COMING AS I ROLLED THROUGH IT. I MADE IT HOME AND TO THE SHOP THE NEXT DAY AND HAD TO REPLACE ALL THE BRAKE LINES. I HAVE HAD TO REPLACE THE PARKING BRAKE PADS ON THE REAR WHI…
Read full complaint
I HAVE A 1999 CHEVY SILVERADO. I HAVE HAD TO REPLACE THE BRAKE LINES DUE TO A RUPTURE AS I WAS COMING UPON A 4 WAY INTERSECTION. THANK GOD NOTHING WAS COMING AS I ROLLED THROUGH IT. I MADE IT HOME AND TO THE SHOP THE NEXT DAY AND HAD TO REPLACE ALL THE BRAKE LINES. I HAVE HAD TO REPLACE THE PARKING BRAKE PADS ON THE REAR WHICH IS A RECALLED ITEM ON A TRUCK THAT HAS A MANUAL SHIFT TRANSMISSION. WHAT DOES THE TRANSMISSION HAVE TO DO WITH BRAKES? SHOULDN'T MATTER, JUST BECAUSE THERE HASN'T BEEN AN INCIDENT OF A ROLL AWAY WITH AN AUTOMATIC TRANSMISSION. SO WHY DO THEY INSPECT THE PARKING BRAKE IF YOU HAVE AN AUTOMATIC TRANSMISSION? BECAUSE IT IS AN EMERGENCY BRAKE! WITH THIS TRUCK YOU NEED IT. YOU CAN FIND MANY COMPLAINTS OF THE BRAKE LINES RUSTING OUT IN THE SAME YEAR AND MAKE AS MY TRUCK. THERE IS AN APPARENT PROBLEM WITH QUALITY AT GM AND THEY SHOULD BE HELD ACCOUNTABLE. *TR
NHTSA ODI #10269937
24,000 miles · Aug 11, 2008
Electrical SystemParking Brake
TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE SERVICE ENGINE, BRAKE LIGHT AND ABS LIGHTS HAVE BEEN ILLUMINATED SINCE THE VEHICLE WAS PURCHASED. THE PARKING BRAKE DOES NOT WORK NORMALLY. THE DEALER STATED THAT THE ELECTRICAL SYSTEM HAD TO BE REPLACED AND ALL RELATED RECALLS WERE PREVIOUSLY REPAIRED. THE CONTACT STATED …
Read full complaint
TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE SERVICE ENGINE, BRAKE LIGHT AND ABS LIGHTS HAVE BEEN ILLUMINATED SINCE THE VEHICLE WAS PURCHASED. THE PARKING BRAKE DOES NOT WORK NORMALLY. THE DEALER STATED THAT THE ELECTRICAL SYSTEM HAD TO BE REPLACED AND ALL RELATED RECALLS WERE PREVIOUSLY REPAIRED. THE CONTACT STATED THAT THE FAILURES ARE RELATED TO THE RECALLS. THE CONTACT IS RESPONSIBLE FOR ALL COST ASSOCIATED WITH THE REPAIRS. THE FAILURE MILEAGE WAS 264,187.
NHTSA ODI #10237718
103,012 miles · Oct 28, 2007
Fuel System, OtherParking BrakeService Brakes, Hydraulic
I HAVE A 1999 CHEVROLET SILVERADO AND MY ABS LIGHT AND PARKING BRAKE LIGHT HAS CAME ON RECENTLY. THE BRAKING ON MY TRUCK IS NOT VERY GOOD IN WET CONDITIONS. I FOUND THAT IT IS A COMMON PROBLEM ON CHEVY TRUCKS, AND I WAS TOLD THAT I SHOULD JUST REMOVE THE FUSE. I WAS TOLD IT HAS SOMETHING TO DO WITH THE WHEEL HUB ASSEMBLY, AND I…
Read full complaint
I HAVE A 1999 CHEVROLET SILVERADO AND MY ABS LIGHT AND PARKING BRAKE LIGHT HAS CAME ON RECENTLY. THE BRAKING ON MY TRUCK IS NOT VERY GOOD IN WET CONDITIONS. I FOUND THAT IT IS A COMMON PROBLEM ON CHEVY TRUCKS, AND I WAS TOLD THAT I SHOULD JUST REMOVE THE FUSE. I WAS TOLD IT HAS SOMETHING TO DO WITH THE WHEEL HUB ASSEMBLY, AND IT IS A COSTLY FIX. I THINK FOR ONCE CHEVROLET SHOULD STEP UP AND PUT OUT A RECALL ON THIS PROBLEM. THERE IS ALSO ANOTHER COMMON COMPLAINT ABOUT MY DASH CLUSTER, WHICH I HAD ALSO FOUND IS A COMMON PROBLEM, THE ODOMETER WILL GO OFF AND ON WHEN IT FEELS LIKE, AND THE GAS GAUGE FREQUENTLY GOES UP AND DOWN, AND THE FUEL LIGHT COMES ON PERIODICALLY. THANK YOU FOR YOUR TIME. *TR
NHTSA ODI #10207095
90,111 miles · Apr 5, 2007
Parking Brake
PARKING BRAKE ON 1999 CHEVROLET SILVERADO DOESN'T RELEASE COMPLETELY AND DRAGS ON THE DRUM CAUSING EXCESSIVE WEAR ON THE DRUM AND BRAKE SHOE. AS THE WEAR INCREASES THE BRAKES LOSE THEIR ABILITY TO HOLD THE VEHICLE. *JB
NHTSA ODI #10187153
96,706 miles · Aug 28, 2006
Parking BrakeService Brakes, Hydraulic
DT*: THE CONTACT STATED WHILE ROTATING THE TIRES, THERE WAS EXTREME CORROSION ON THE ROTORS, AND UPON FURTHER INSPECTION THE PARKING BRAKE WAS EXTREMELY WORN AS WELL. THE VEHICLE WAS EXPOSED TO HARSH WINTER WEATHER, BUT ROAD SALTS WERE NOT USED. THERE IS A NHTSA RECALL, #05V161000, REGARDING THE PARKING BRAKE. THE VEHICLE VI…
Read full complaint
DT*: THE CONTACT STATED WHILE ROTATING THE TIRES, THERE WAS EXTREME CORROSION ON THE ROTORS, AND UPON FURTHER INSPECTION THE PARKING BRAKE WAS EXTREMELY WORN AS WELL. THE VEHICLE WAS EXPOSED TO HARSH WINTER WEATHER, BUT ROAD SALTS WERE NOT USED. THERE IS A NHTSA RECALL, #05V161000, REGARDING THE PARKING BRAKE. THE VEHICLE VIN WAS NOT INCLUDED IN THE RECALL. THE MANUFACTURER WAS ALERTED.
NHTSA ODI #10166730
84,438 miles · Jun 28, 2006
Parking Brake
COMPLAINT ABOUT REAR PARKING BRAKE AT SERVICE REPAIR SEVERAL TIMES TO DEALERSHIP. I WAS TOLD THAT IS JUST THE WAY IT IS... NOW AT 84,438 MILES AFTER THE EXTENDED WARRANTY IS OVER BY LESS THAN ONE YEAR AND 9,000 MILES, BEING TOLD THE REAR PARKING BRAKE PADS ARE WORN OUT AND NEED TO BE REPLACED. COST WAS NEARLY $300. I WAS TOL…
Read full complaint
COMPLAINT ABOUT REAR PARKING BRAKE AT SERVICE REPAIR SEVERAL TIMES TO DEALERSHIP. I WAS TOLD THAT IS JUST THE WAY IT IS... NOW AT 84,438 MILES AFTER THE EXTENDED WARRANTY IS OVER BY LESS THAN ONE YEAR AND 9,000 MILES, BEING TOLD THE REAR PARKING BRAKE PADS ARE WORN OUT AND NEED TO BE REPLACED. COST WAS NEARLY $300. I WAS TOLD THEY WEAR OUT AS YOU DRIVE AROUND?? *JB
NHTSA ODI #10160983
56,000 miles · Jun 19, 2006
Parking Brake
DT*: THE CONTACT STATED THE VEHICLE HAS BEEN EXHIBITING GRADUAL PROBLEMS WITH THE EMERGENCY PARKING BRAKES OVER THE YEARS SINCE IT WAS PURCHASED. WHEN THE EMERGENCY BRAKE PEDAL WAS DEPRESSED ON NORMAL ROAD CONDITIONS, IT WOULD NOT HOLD. THIS BRAKE FAILURE DID NOT RESULT IN ANY CRASHES OR INJURIES. THE BRAKE LIGHTS DID NOT ILL…
Read full complaint
DT*: THE CONTACT STATED THE VEHICLE HAS BEEN EXHIBITING GRADUAL PROBLEMS WITH THE EMERGENCY PARKING BRAKES OVER THE YEARS SINCE IT WAS PURCHASED. WHEN THE EMERGENCY BRAKE PEDAL WAS DEPRESSED ON NORMAL ROAD CONDITIONS, IT WOULD NOT HOLD. THIS BRAKE FAILURE DID NOT RESULT IN ANY CRASHES OR INJURIES. THE BRAKE LIGHTS DID NOT ILLUMINATE BEFORE ANY OF THE BRAKE FAILURES. ADJUSTMENTS WERE MADE TO THE BRAKES BY A SERVICE DEALER MECHANIC BACK IN FEBRUARY 2004. THE DEALER REQUESTED THE CONTACT TO RETURN THE VEHICLE FOR ADDITIONAL REPAIRS. THE DESIGN OF BRAKING SYSTEM IS REAR-WHEEL ANTILOCK. THERE HAVE BEEN 12 FAILURES SINCE LAST ADJUSTMENTS WERE MADE IN MARCH.
NHTSA ODI #10160149
20,000 miles · Jan 13, 2005
Parking Brake
VEHICLE IS EXPERIENCING PROBLEMS WITH THE EMERGENCY BRAKES. WHEN THE BRAKE IS APPLIED, THEY WILL NOT HOLD THE VEHICLE IN POSITION. PROVIDE FURTHER DETAILS. *NM
NHTSA ODI #10107319
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.
Illustration