NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
164 reportsClear category filter87,990 miles · Jul 3, 2011
Service Brakes, Hydraulic
I ATTEMPTED TO STOP AT A STOP LIGHT. WHEN I DEPRESSED THE BRAKE PEDAL IT WENT TO THE FLOOR AND I REALIZED THAT I HAD NO BRAKES. I WAS ABLE TO SLOW DOWN ENOUGH TO MAKE IT THROUGH THE LIGHT AND INTO A PARKING LOT. AFTER A QUICK INSPECTION I FOUND THAT THE STEEL BRAKE LINE GOING TO THE REAR BRAKES RUSTED THROUGH, AND WAS SPEWING B…
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I ATTEMPTED TO STOP AT A STOP LIGHT. WHEN I DEPRESSED THE BRAKE PEDAL IT WENT TO THE FLOOR AND I REALIZED THAT I HAD NO BRAKES. I WAS ABLE TO SLOW DOWN ENOUGH TO MAKE IT THROUGH THE LIGHT AND INTO A PARKING LOT. AFTER A QUICK INSPECTION I FOUND THAT THE STEEL BRAKE LINE GOING TO THE REAR BRAKES RUSTED THROUGH, AND WAS SPEWING BRAKE FLUID. THIS TRUCK IS A 2002 MODEL WITH ONLY 88K MILES AND IS WELL MAINTAINED. I DON'T THINK THE BRAKE LINES SHOULD RUST THROUGH AND FAIL THIS SOON. THIS IS A MAJOR SAFETY PROBLEM. I WAS LUCKY. I WAS DRIVING SLOW, WAS NOT ON A BUSY STREET AND DIDN'T HAVE AN ACCIDENT. IT COULD HAVE CAUSED A TERRIBLE ACCIDENT! IT HAS NOT BEEN REPAIRED YET. *TR
NHTSA ODI #10410364
45,000 miles · Jun 20, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 10 MPH HE APPLIED THE BRAKES AND THE PEDAL DEPRESSED TO THE FLOOR. THE VEHICLE WOULD NOT STOP UNTIL THE EMERGENCY BRAKE WAS ENGAGED. THE CONTACT EXAMINED THE VEHICLE AND NOTICED THE BRAKE LINES ON THE DRIVER'S SIDE FRACTURED …
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 10 MPH HE APPLIED THE BRAKES AND THE PEDAL DEPRESSED TO THE FLOOR. THE VEHICLE WOULD NOT STOP UNTIL THE EMERGENCY BRAKE WAS ENGAGED. THE CONTACT EXAMINED THE VEHICLE AND NOTICED THE BRAKE LINES ON THE DRIVER'S SIDE FRACTURED DUE TO CORROSION. THE FAILURE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 45,000.
NHTSA ODI #10407540
67,620 miles · Jun 13, 2011
Service Brakes, Hydraulic
BRAKE PEDAL SUDDENLY WENT TO THE FLOOR AS I ATTEMPTED TO BACK OUT OF A PARKING SPACE. NO PRIOR PROBLEMS WITH THE BRAKES. UPON EXITING THE VEHICLE I NOTICED A LARGE PUDDLE OF BRAKE FLUID FORMING UNDER THE VEHICLE BELOW THE DRIVER'S DOOR. CALLED AAA AND HAD THE VEHICLE TOWED TO A LOCAL SHOP. MECHANIC POINTED OUT THAT ALL BRAKE L…
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BRAKE PEDAL SUDDENLY WENT TO THE FLOOR AS I ATTEMPTED TO BACK OUT OF A PARKING SPACE. NO PRIOR PROBLEMS WITH THE BRAKES. UPON EXITING THE VEHICLE I NOTICED A LARGE PUDDLE OF BRAKE FLUID FORMING UNDER THE VEHICLE BELOW THE DRIVER'S DOOR. CALLED AAA AND HAD THE VEHICLE TOWED TO A LOCAL SHOP. MECHANIC POINTED OUT THAT ALL BRAKE LINES FORWARD OF THE ABS PUMP WERE RUSTED OUT RESULTING IN THE FAILURE OF ONE OF THE LINES. HE ALSO POINTED OUT THAT THE FRONT CALIPERS WERE RUSTED TO THE POINT WHERE THE BLEED PORTS WERE UNSERVICEABLE, REQUIRING REPLACEMENT OF THE CALIPERS AS WELL AS THE BRAKE LINES. FROM MY RESEARCH THIS APPEARS TO BE A CASE OF INFERIOR MATERIALS USED IN THE CONSTRUCTION OF THE 6 MILLION AFFECTED VEHICLES. LUCKILY I WASN'T AT SPEED WHEN THIS FAILURE OCCURRED. THESE VEHICLES NEED TO RECALLED, INSPECTED, AND REPAIRED AT GM'S EXPENSE BEFORE THERE ARE ANY FURTHER INJURIES.
NHTSA ODI #10406750
Mileage unknown · Jun 4, 2011
Service Brakes, Hydraulic
I GOT OFF WORK, PULLED UP TO GET ONTO MAIN ROAD BRAKES FELT SPONGY, DID STOP, GOT ONTO MAIN ROAD TRAVELED 1/2 MILE ABOUT 35 MPH, SLOWED TRUCK BY LETTING OFF GAS TO MAKE RIGHT TURN, TRIED TO USE BRAKES TO SLOW MORE, BRAKES WENT TO THE FLOOR. I MANAGED TO GET SLOW ENOUGH TO MAKE TURN SAFELY. I PRETTY MUCH TRAVELED 5-10 MPH ANOTHER…
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I GOT OFF WORK, PULLED UP TO GET ONTO MAIN ROAD BRAKES FELT SPONGY, DID STOP, GOT ONTO MAIN ROAD TRAVELED 1/2 MILE ABOUT 35 MPH, SLOWED TRUCK BY LETTING OFF GAS TO MAKE RIGHT TURN, TRIED TO USE BRAKES TO SLOW MORE, BRAKES WENT TO THE FLOOR. I MANAGED TO GET SLOW ENOUGH TO MAKE TURN SAFELY. I PRETTY MUCH TRAVELED 5-10 MPH ANOTHER 50YDS TO GET INTO LOWES PARKING LOT. I TRIED TO BRAKE AGAIN, NO BRAKES. I PUT TRUCK INTO NEUTRAL AND COASTED TO STOP. I GOT OUT OF THE TRUCK SMELLED BRAKE FLUID. BRAKE FLUID WAS EVERYWHERE AROUND MY DRIVER REAR WHEEL. I CALLED A TOW TRUCK TO GET MY TRUCK HOME THINKING MY CALIPER OR HOSE FAILED. AFTER TAKING OFF MY WHEEL, I FOUND THAT THE STEEL BRAKE LINE WAS RUPTURED. CALLED A MECHANIC TO SEE IF HE COULD TAKE A LOOK AT IT, HE SAID HE COULD MAYBE LATE FRIDAY, HE JUST DID A 2004 SILVERADO WITH THE SAME PROBLEM. I CALLED A TOW TRUCK AGAIN TO GET TRUCK TO HIS GARAGE. HE CALLS ME LATE FRIDAY EVENING AND SAID ALL THE BRAKES LINES HAVE TO BE REPLACED BECAUSE OF HEAVY CORROSION AND MAYBE THE CALIPERS DEPENDING IF THEY FAIL. HE QUOTED ME A PRICE AT $900. MY CO-WORKER HAD HIS BRAKE LINES REPLACED NOT TO LONG AGO AND HIS IS A NEWER MODEL. *TR
NHTSA ODI #10404433
53,627 miles · May 22, 2011
Service Brakes, Hydraulic
WAS DRIVING TO THE STORE IN MY 2002 CHEVY SILVERADO AND OUT OF NOWHERE THE BRAKE PEDAL WENT TO THE FLOOR. LUCKILY PULLED INTO A PARKING LOT AND SAW BRAKE FLUID POURING OUT FROM UNDERNEATH DRIVER SIDE OF VEHICLE.AFTER LOOKING UNDER THE TRUCK TO SEE WHERE IT WAS COMING FROM FOUND ALL BRAKE LINES IN THAT AREA EXTREMELY RUSTED AND D…
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WAS DRIVING TO THE STORE IN MY 2002 CHEVY SILVERADO AND OUT OF NOWHERE THE BRAKE PEDAL WENT TO THE FLOOR. LUCKILY PULLED INTO A PARKING LOT AND SAW BRAKE FLUID POURING OUT FROM UNDERNEATH DRIVER SIDE OF VEHICLE.AFTER LOOKING UNDER THE TRUCK TO SEE WHERE IT WAS COMING FROM FOUND ALL BRAKE LINES IN THAT AREA EXTREMELY RUSTED AND DETERIORATED .CHECKED THE RESERVOIR FOR THE BRAKE FLUID AND IT WAS ALMOST EMPTY . THIS COULD OF BEEN A SITUATION WHERE A SEVERE ACCIDENT COULD OF OCCURRED. THIS HAPPENED ON 5/21/11 HAVE YET TO TAKE THE VEHICLE IN FOR REPAIRS. JUST TO MENTION MY DAUGHTERS AGE 10 AND 14 ARE IN THIS VEHICLE OFTEN WITH ME AND I HAVE NEVER SEEN BRAKE LINES ON A VEHICLE THIS BAD CONSIDERING THE VEHICLE IS LESS THAN 10 YRS OLD. *TR
NHTSA ODI #10402317
104,000 miles · Mar 21, 2011
Service Brakes, Hydraulic
1. NORMAL DRIVING, ALL VEHICLE PREVENTIATIVE MAINTENANCE 2. WHILE DRIVING, THE BRAKE LINES BURST CAUSING LOSE OF BRAKING POWER. UPON INSPECTION, THE BRAKE LINES WERE COMPLETELY RUSTED THROUGH. 3. ALL BRAKES LINES REPLACED. *TR
NHTSA ODI #10392307
120,000 miles · Mar 2, 2011
Service Brakes, HydraulicCrash
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE THE CONTACT WAS DRIVING APPROXIMATELY 5 MPH ON DRY ROAD SURFACES, THE ANTI-LOCK SYSTEM ACTIVATED AND THE VEHICLE WOULD NOT SLOW DOWN WHEN THE BRAKES WERE ENGAGED. SUDDENLY, THE GEAR WAS SHIFTED INTO REVERSE CAUSING THE VEHICLE TO CRASH INTO A CEMENT BARRIER. THE CONTACT…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE THE CONTACT WAS DRIVING APPROXIMATELY 5 MPH ON DRY ROAD SURFACES, THE ANTI-LOCK SYSTEM ACTIVATED AND THE VEHICLE WOULD NOT SLOW DOWN WHEN THE BRAKES WERE ENGAGED. SUDDENLY, THE GEAR WAS SHIFTED INTO REVERSE CAUSING THE VEHICLE TO CRASH INTO A CEMENT BARRIER. THE CONTACT RESUMED DRIVING WITHOUT EXPERIENCING THE ABS FAILURE. THERE WAS NO PERSONAL INJURY. A POLICE REPORT WAS NOT FILED. THE FRONT BUMPER SUSTAINED MINOR DAMAGE. THE VEHICLE HAD NOT BEEN DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 120,000.
NHTSA ODI #10386153
48,296 miles · Feb 28, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT NOTICED THAT WHEN TRAVELING AT VERY LOW SPEEDS, THE ABS WOULD ACTIVATE, RESULTING IN LITTLE OR NO TRACTION, SIMILAR TO NHTSA CAMPAIGN ID NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC: ANTILOCK). THE MANUFACTURER INFORMED THE CONTACT THAT HIS VEHICLE WAS NOT INCLUDE…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT NOTICED THAT WHEN TRAVELING AT VERY LOW SPEEDS, THE ABS WOULD ACTIVATE, RESULTING IN LITTLE OR NO TRACTION, SIMILAR TO NHTSA CAMPAIGN ID NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC: ANTILOCK). THE MANUFACTURER INFORMED THE CONTACT THAT HIS VEHICLE WAS NOT INCLUDED IN THE PREVIOUS RECALL AND OFFERED NO FURTHER ASSISTANCE. AN INDEPENDENT MECHANIC PERFORMED A DIAGNOSTIC TEST; HOWEVER, HE WAS UNABLE TO DUPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE CURRENT MILEAGE WAS 49,000 AND THE FAILURE MILEAGE WAS 48,296.
NHTSA ODI #10384760
98,000 miles · Feb 4, 2011
Service Brakes, Hydraulic
I HAVE A 2002 CHEVY SILVERADO,THAT'S IS EXPERIENCING BRAKING FAILURES AT LOW SPEED , LIKE COMING TO A COMPLETE STOP AT A INTERSECTION. I HAVE ALMOST SLID INTO SEVERAL INTERSECTIONS AND DO NO LONGER TRUST MY BRAKES TO STOP WHEN I NEED THEM. THIS PROBLEM IS THE SAME AS REPORTED UNDER A EXISTING RECALL # 05V37900. THE PROBLEM IS TH…
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I HAVE A 2002 CHEVY SILVERADO,THAT'S IS EXPERIENCING BRAKING FAILURES AT LOW SPEED , LIKE COMING TO A COMPLETE STOP AT A INTERSECTION. I HAVE ALMOST SLID INTO SEVERAL INTERSECTIONS AND DO NO LONGER TRUST MY BRAKES TO STOP WHEN I NEED THEM. THIS PROBLEM IS THE SAME AS REPORTED UNDER A EXISTING RECALL # 05V37900. THE PROBLEM IS THAT MY VEHICLE IS NOT LISTED DUE TO IT'S LOCATION, WHICH IS NORTH CAROLINA. THIS RECALL NEEDS TO BE EXPANDED TO COVER ADDITION STATES. *TR
NHTSA ODI #10380791
Mileage unknown · Jan 28, 2011
Service Brakes, HydraulicStructure
BRAKE LINES RUSTING ON MY 02 SILVERADO 1500. *TR
NHTSA ODI #10379498
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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