NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
222 reportsClear category filter100,000 miles · Aug 24, 2018
Power TrainService Brakes, Hydraulic
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 15 MPH, THE TRANSMISSION MALFUNCTIONED AND THE VEHICLE WOULD NOT PROPERLY ACCELERATE. THE VEHICLE WAS TAKEN TO THE LOCAL INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE TRANSMISSION COMPONENTS IN FIRST GEAR WERE SHATTERED AND THE TRANSMISSION NEEDED TO…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 15 MPH, THE TRANSMISSION MALFUNCTIONED AND THE VEHICLE WOULD NOT PROPERLY ACCELERATE. THE VEHICLE WAS TAKEN TO THE LOCAL INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE TRANSMISSION COMPONENTS IN FIRST GEAR WERE SHATTERED AND THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. ALSO, BRAKE FLUID WAS LEAKING FROM THE VEHICLE. UPON INSPECTION, IT WAS DISCOVERED THAT THE BRAKE LINES WERE RUSTED AND CORRODED. THE BRAKE LINES WERE REPLACED AND THE FAILURE WAS REMEDIED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED AND NO SOLUTION WAS OFFERED. THE FAILURE MILEAGE WAS 100,000.
NHTSA ODI #11122077
18,000 miles · Oct 21, 2014
Service Brakes, Hydraulic
WHEN MERGING INTO HIGHWAY TRAFFIC, OFF RAMP, THERE WAS TOTAL BRAKE FAILURE. OTHER CARS WERE APPROACHING AND I COULD NOT BRING THE TRUCK TO A STOP. SO I DROVE ONTO THE SHOULDER OFF THE ROAD TO AVOID AN ACCIDENT. THE PROBLEM WAS INSTANTANEOUS WITH NO PRIOR WARNING. THIS IS THE SECOND TIME THIS HAS OCCURRED. THE PROBLEM WAS DUE TO …
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WHEN MERGING INTO HIGHWAY TRAFFIC, OFF RAMP, THERE WAS TOTAL BRAKE FAILURE. OTHER CARS WERE APPROACHING AND I COULD NOT BRING THE TRUCK TO A STOP. SO I DROVE ONTO THE SHOULDER OFF THE ROAD TO AVOID AN ACCIDENT. THE PROBLEM WAS INSTANTANEOUS WITH NO PRIOR WARNING. THIS IS THE SECOND TIME THIS HAS OCCURRED. THE PROBLEM WAS DUE TO CORROSIVE BRAKE LINES....UPDATED 10/22/14 *BF
NHTSA ODI #10650173
160,000 miles · May 4, 2012
Service Brakes, HydraulicCrashInjury
TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 25 MPH, THE BRAKE PEDAL WAS DEPRESSED WITHOUT A RESPONSE. THE VEHICLE CONTINUED TO ACCELERATE AND CRASHED INTO THE REAR OF THE PROCEEDING VEHICLE AND IT WAS DRIVEN OFF THE ROAD INTO A GRASSY FIELD. THE VEHICLE WAS TOWED TO THE RESIDENCE. THE VEHICL…
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TL* THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 25 MPH, THE BRAKE PEDAL WAS DEPRESSED WITHOUT A RESPONSE. THE VEHICLE CONTINUED TO ACCELERATE AND CRASHED INTO THE REAR OF THE PROCEEDING VEHICLE AND IT WAS DRIVEN OFF THE ROAD INTO A GRASSY FIELD. THE VEHICLE WAS TOWED TO THE RESIDENCE. THE VEHICLE SUSTAINED MINOR DAMAGE TO THE FRONT BUMPER AND UNDERCARRIAGE. THE VEHICLE WAS NOT REPAIRED. THERE WAS AN OPEN INVESTIGATION, NHTSA ACTION NUMBER EA11001 (SERVICE BRAKES, HYDRAULIC: FOUNDATION HOSES, LINES/PIPING, AND FITTINGS). THE MANUFACTURER WAS NOT NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 160,000. THE DRIVER OF THE OTHER VEHICLE FILED A REPAIR AND PERSONAL INJURY CLAIM AGAINST THE CONSUMER. UPDATED 08/30/12
NHTSA ODI #10457457
Mileage unknown · Apr 5, 2012
Service Brakes, Hydraulic
MY WIFE WAS TRAVELING TO BAY CITY MICHIGAN TO GO SHOPPING. SHE APPLIED THE BRAKES TO SLOW DOWN THE VEHICLE AS THERE WAS ANOTHER CAR IN FRONT OF HERS, MAKING A LEFT HAND TURN. AFTER A SECOND OR TWO OF FAIRLY HARD BRAKING, THE PEDAL SUDDENLY WENT TO THE FLOOR. MY WIFE WAS ABLE TO GET TO THE SHOULDER TO SLOW DOWN BEFORE HITTING THE…
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MY WIFE WAS TRAVELING TO BAY CITY MICHIGAN TO GO SHOPPING. SHE APPLIED THE BRAKES TO SLOW DOWN THE VEHICLE AS THERE WAS ANOTHER CAR IN FRONT OF HERS, MAKING A LEFT HAND TURN. AFTER A SECOND OR TWO OF FAIRLY HARD BRAKING, THE PEDAL SUDDENLY WENT TO THE FLOOR. MY WIFE WAS ABLE TO GET TO THE SHOULDER TO SLOW DOWN BEFORE HITTING THE REAR END OF THE CAR IN FRONT OF HERS. THANKFULLY THERE WAS AN ADEQUATE SHOULDER THAT SHE COULD PULL OFF AND SLOWLY COME TO A STOP. *TR
NHTSA ODI #10454311
112,325 miles · Apr 1, 2012
Service Brakes, Hydraulic
REAR MAIN BRAKE LINE FAILURE DUE TO EXTREME RUSTING CONDITION. THIS LINE IS LOCATED ALONG THE DRIVER SIDE UPPER CHASSIS RAIL. FURTHER INSPECTION OF ALL BRAKE LINES RESULTED IN A VERY RUSTED CONDITION. *TR
NHTSA ODI #10453745
Mileage unknown · Mar 16, 2012
Service Brakes, Hydraulic
ON MARCH 12 2012 I WAS TRAVELING DOWN A ROAD GOING TO WORK WHEN A VEHICLE PULLED OUT IN FRONT OF ME. DRIVER DID NOT SEE ME THEREFORE KEPT ON GOING SO I IMMEDIATELY HIT THE BRAKES AND SWERVED TO THE LEFT AVOIDING A CRASH.. AT THAT TIME WHEN I HIT MY BRAKES THE PEDAL WENT STRAIGHT TO THE FLOOR. THE ABS WAS ACTIVATED BUT IT TOOK CO…
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ON MARCH 12 2012 I WAS TRAVELING DOWN A ROAD GOING TO WORK WHEN A VEHICLE PULLED OUT IN FRONT OF ME. DRIVER DID NOT SEE ME THEREFORE KEPT ON GOING SO I IMMEDIATELY HIT THE BRAKES AND SWERVED TO THE LEFT AVOIDING A CRASH.. AT THAT TIME WHEN I HIT MY BRAKES THE PEDAL WENT STRAIGHT TO THE FLOOR. THE ABS WAS ACTIVATED BUT IT TOOK CONSIDERABLY LONGER TO STOP THE TRUCK SINCE I HAD VERY LITTLE BRAKING EFFORT... I TOOK IT TO A SHOP TO HAVE IT FIXED AND IT WAS DETERMINED THAT ONE OF THE 4 LINES THAT WERE CLUSTERED TOGETHER ON THE FRAME BETWEEN THE MASTER CYLINDER AND THE ABS CONTROLLER HAD BURST. ALL 4 OF THE LINES WERE VERY RUSTY. IN ADDITION, TODAY MARCH 16 2012 I WENT BY THE SHOP TO SEE WHAT THEY HAD DONE ON THE REPAIR.. THE MECHANIC INFORMED ME THAT HE HAD REPAIRED THE LINE AND WHEN HE WAS BLEEDING THE BRAKES, ANOTHER ONE OF THE LINES HAD BURST. *TR
NHTSA ODI #10451957
116,000 miles · Mar 1, 2012
Service Brakes, Hydraulic
WHILE DRIVING ON THE HIGHWAY, IN A SNOWSTORM, I HAD TO HIT THE BRAKES TO AVOID ANOTHER CAR, THAT HAD LOST CONTROL. I WAS ABLE TO NARROWLY MISS HIM, BUT WHEN I WENT TO STOP, MY BRAKES HIT THE FLOOR. I WAS REALLY LUCKY NO ONE ELSE WAS AROUND, BECAUSE I COULDN'T STOP. *TR
NHTSA ODI #10449994
110,000 miles · Feb 11, 2012
Electrical SystemService Brakes, HydraulicVehicle Speed ControlCrash
I HAVE HAD NOTHING BUT TROUBLE WITH ROTTED ROTORS, PADS THAT DON'T WEAR RIGHT, BRAKE LINES THAT ROTTED AND RUSTED AWAY THAT THEY NEEDED TO BE ALL REPLACED IN JULY OF 2006. A SIX YEAR OLD MOTOR VEHICLE SHOULD NOT HAVE TO HAVE ALL THE LINES REPLACED. THE BILL WAS $1,200. NEXT A ABS FRONT WHEEL SENSOR RECALL WAS DONE AT BEST CHEVY…
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I HAVE HAD NOTHING BUT TROUBLE WITH ROTTED ROTORS, PADS THAT DON'T WEAR RIGHT, BRAKE LINES THAT ROTTED AND RUSTED AWAY THAT THEY NEEDED TO BE ALL REPLACED IN JULY OF 2006. A SIX YEAR OLD MOTOR VEHICLE SHOULD NOT HAVE TO HAVE ALL THE LINES REPLACED. THE BILL WAS $1,200. NEXT A ABS FRONT WHEEL SENSOR RECALL WAS DONE AT BEST CHEVY, HINGHAM, MASS. THE ABS LIGHTS CAME ON AND OFF AT THEIR OWN PACE. I HAD NEW FRONT BEARINGS INSTALLED, HAD MY MECHANIC CHECK FOR CODES. NOTHING. THE BRAKES JUST NEVER FELT RIGHT SOMETIMES. I WORKED AS A AUTO MECHANIC FOR NEARLY 25 YEARS, NEVER SEEN ANYTHING LIKE THIS BRAKE PROBLEM. BY THE WAY I TOOK GOOD CARE OF MY VEHICLE, GM MUST OF USED SUB STANDARD BRAKE TUBING, NEVER SEEN ANYTHING SO DECAYED AFTER 6 YEARS. ON APRIL 29, 2011 I WAS DRIVING HOME AND HAD STOPPED AT A TRAFFIC LIGHT ABOUT 1/4 MILE FROM MY HOME. THE LIGHT TURNED GREEN, I ACCELERATED UP TO ABOUT 30 MPH AND WITHIN A FEW HUNDRED FEET THE ABS LIGHT CAME ON. HERE WE GO AGAIN. AS I NEARED THE ENTRANCE TO MY STREET SOME 300 FEET AWAY , I TOOK MY FOOT OF THE GAS AND THE TRUCK BEGAN TO SLOW. AT ABOUT 200 FEET I BEGAN TO DEPRESS THE BRAKE PEDAL, IT SEEMED OK BUT AS I GOT NEARER TO THE STREET I FOUND MYSELF NEEDING TO PUSH DOWN MORE AND MORE. I WAS AT 15 MPH AND READY TO BEGIN MY TURN AND FELT SOMETHING WAS WRONG. MY LEFT FRONT TIRE HAD BEGUN TO LIGHTLY SKID. THE PEDAL WENT TO THE FLOOR, WAS DOWN AT ABOUT 10 MPH AND BEFORE I COULD GET MY LEFT FOOT ONTO THE EMERGENCY BRAKE AND APPLY IT, THE LEFT SIDE FRONT OF TRUCK STRUCK A TREE. THE ROAD IS A PRIVATE WAY AND VERY NARROW THERE. NO AIR BAG DEPLOYMENT, DIDN'T DAMAGE THE TRUCK TOO MUCH BUT IT HIT RIGHT ON THE TOW HOOK AND KINKED THE FRAME. I HAD MY MECHANIC BRING HIS ANALYZER TO MY HOME AND IT INFORMED HIM THAT THE CONTROL MODULE HAD FAILED. I'VE SPENT GOOD MONEY AFTER BAD ON THOSE BRAKES AND I DEMAND THE NHTSA DO SOMETHING. *TR
NHTSA ODI #10447520
140,000 miles · Feb 7, 2012
Service Brakes, Hydraulic
BRAKE FAILURE CAUSED BY BRAKE LINE FAILURE DUE TO CORROSION. UPON INSPECTION, ALL BRAKE LINES ARE SEVERELY CORRODED AND MUST BE REPLACED. *TR
NHTSA ODI #10446960
110,791 miles · Jan 28, 2012
Service Brakes, Hydraulic
I WAS LEAVING GIANT EAGLE GROCERY STORE. I PULLED OUT OF MY PARKING SPOT AND PULLED UP TO THE CROSSWALK. THERE WAS A MOTHER WITH HER TWO SMALL CHILDREN CROSSING. I PUT ON MY BRAKES TO STOP TO LET THEM CROSS AND THE PEDAL WENT TO THE FLOOR. THANKFULLY I PUT ON THE PARKING BRAKE AND STOPPED TWO FEET FROM RUNNING THEM OVER, I PULL…
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I WAS LEAVING GIANT EAGLE GROCERY STORE. I PULLED OUT OF MY PARKING SPOT AND PULLED UP TO THE CROSSWALK. THERE WAS A MOTHER WITH HER TWO SMALL CHILDREN CROSSING. I PUT ON MY BRAKES TO STOP TO LET THEM CROSS AND THE PEDAL WENT TO THE FLOOR. THANKFULLY I PUT ON THE PARKING BRAKE AND STOPPED TWO FEET FROM RUNNING THEM OVER, I PULLED TO THE SIDE AND LOOKED UNDER MY TRUCK AND SAW ONE OF THE BRAKE LINES FROM THE MASTER CYLINDER TO THE ABS MODULE WAS BLOWN OUT. ALL OF THE BRAKE LINES ON MY TRUCK ARE SEVERELY CORRODED. THIS IS THE SECOND BRAKE LINE FAILURE ON THIS TRUCK. ONE OF MY REAR BRAKE LINES FAILED DO TO CORROSION LAST YEAR. I PATCHED THAT ONE AND I'M GOING TO PATCH THIS ONE SINCE I DO NOT HAVE THE MONEY TO REPLACE ALL OF THE BRAKE LINES. IT'S JUST A MATTER OF WHEN NOT IF THE BRAKE LINES CAUSE MY DEATH OR SOME INNOCENT PEOPLE TO DIE WHEN I CRASH INTO THEM BECAUSE OF THESE CHEAP JUNK BRAKE LINES GM PUT ON THESE TRUCKS! *TR
NHTSA ODI #10445679
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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