NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
53 reportsClear category filter75,000 miles · Sep 4, 2018
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE REVERSING THE VEHICLE, THE BRAKE PEDAL BECAME STUCK TO THE FLOORBOARD. THE CONTACT WAS ABLE TO ENGAGE THE EMERGENCY BRAKE TO STOP THE VEHICLE. THE CONTACT INSPECTED THE VEHICLE AND FOUND THAT ALL THE BRAKE LINES WERE CORRODED, WHICH CAUSED THE BRAKE FLUID TO LEAK. THE VEHICLE WA…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE REVERSING THE VEHICLE, THE BRAKE PEDAL BECAME STUCK TO THE FLOORBOARD. THE CONTACT WAS ABLE TO ENGAGE THE EMERGENCY BRAKE TO STOP THE VEHICLE. THE CONTACT INSPECTED THE VEHICLE AND FOUND THAT ALL THE BRAKE LINES WERE CORRODED, WHICH CAUSED THE BRAKE FLUID TO LEAK. THE VEHICLE WAS TOWED TO BOWSER AUTOMOTIVE (132-168 NORTH LEWIS RUN ROAD, WEST MIFFLIN, PA 15236, (412) 469-2100) WHERE IT WAS DIAGNOSED THAT ALL THE BRAKE LINES WERE SEVERELY CORRODED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 75,000.
NHTSA ODI #11124216
65,250 miles · Nov 2, 2012
Service Brakes, HydraulicSuspension
WHILE DRIVING HOME, SOMEONE PULLED OUT IN FRONT OF ME. I APPLIED THE BRAKES AND THE PEDAL WENT STRAIGHT TO THE FLOOR. I MANAGED TO AVOID A COLLISION AND MADE IT HOME AS THIS HAPPENED LUCKILY AROUND THE CORNER FROM MY HOUSE. I LOOKED FOR THE PROBLEM, IT DIDN'T TAKE LONG AS UNDER THE HOOD THE FRAME WAS COVERED WITH BRAKE FLUID. I …
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WHILE DRIVING HOME, SOMEONE PULLED OUT IN FRONT OF ME. I APPLIED THE BRAKES AND THE PEDAL WENT STRAIGHT TO THE FLOOR. I MANAGED TO AVOID A COLLISION AND MADE IT HOME AS THIS HAPPENED LUCKILY AROUND THE CORNER FROM MY HOUSE. I LOOKED FOR THE PROBLEM, IT DIDN'T TAKE LONG AS UNDER THE HOOD THE FRAME WAS COVERED WITH BRAKE FLUID. I WAS AMAZED TO FIND THAT ONE OF THE METAL BRAKE LINE HAD RUSTED THROUGH AND THE OTHERS DON'T LOOK TO BE IN VERY GOOD CONDITION. NEEDLESS TO SAY I WILL BE REPLACING ALL THE BRAKE LINES WITH STAINLESS STEEL LINES (A COST OF $350.00). I CAN'T IMAGINE WHY STAINLESS STEEL LINES ARE NOT ORIGINAL EQUIPMENT. RUST SEEMS TO BE A PROBLEM WITH THIS VEHICLE NOT ONLY THE BRAKE LINES BUT ALSO PARTS OF THE SUSPENSION.
NHTSA ODI #10484141
96,000 miles · Jun 15, 2012
Service Brakes, Hydraulic
WHEN OPERATING VEHICLE AT SLOW SPEED AND ATTEMPTING TO STOP ANTI LOCK BRAKES ENGAGE AND INCREASED STOPPING DISTANCE IS REQUIRED. THIS VEHICLE WAS RECALLED FOR SAME PROBLEM IN 2005. I MADE AN ATTEMPT AT MY LOCAL GMC DEALER TO REMEDY THIS CONTINUING PROBLEM. HOWEVER, I WAS INFORMED THAT GENERAL MOTORS WOULD ONLY MAKE ONE ATTEMPT …
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WHEN OPERATING VEHICLE AT SLOW SPEED AND ATTEMPTING TO STOP ANTI LOCK BRAKES ENGAGE AND INCREASED STOPPING DISTANCE IS REQUIRED. THIS VEHICLE WAS RECALLED FOR SAME PROBLEM IN 2005. I MADE AN ATTEMPT AT MY LOCAL GMC DEALER TO REMEDY THIS CONTINUING PROBLEM. HOWEVER, I WAS INFORMED THAT GENERAL MOTORS WOULD ONLY MAKE ONE ATTEMPT TO REMEDY ISSUE AND THAT I ALREADY HAD USED THAT. THE DEALER REPRESENTATIVE STATED THAT I COULD PULL THE FUSE ON THE ABS AND THE VEHICLE WOULD PERFORM STOPPING WITHOUT THE AID OF ABS AND WOULD STOP NORMALLY IN DRY ENVIRONMENT, WITHOUT THE ASSISTANCE OF ANTI LOCK BRAKES. I FEEL THIS IS A DESIGN PROBLEM AND IS A TREMENDOUS SAFETY ISSUE. I DID TAKE VEHICLE TO ANOTHER MECHANIC WHO DROVE VEHICLE IN HIS PARKING LOT AND THE PROBLEM OCCURRED TO HIM ALMOST CAUSING A CRASH IN HIS LOT. *JB
NHTSA ODI #10461827
96,000 miles · Jun 14, 2012
Service Brakes, Hydraulic
WHEN OPERATING VEHICLE AT SLOW SPEED AND ATTEMPTING TO STOP ANTI LOCK BRAKES ENGAGED AND INCREASED STOPPING DISTANCE IS REQUIRED. THIS VEHICLE WAS RECALLED FOR SAME PROBLEM IN 2005. I MADE AN ATTEMPT AT MY LOCAL GMC DEALER TO REMEDY THIS CONTINUING PROBLEM, HOWEVER, I WAS INFORMED THAT GENERAL MOTORS WOULD ONLY MAKE ONE ATTEMPT…
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WHEN OPERATING VEHICLE AT SLOW SPEED AND ATTEMPTING TO STOP ANTI LOCK BRAKES ENGAGED AND INCREASED STOPPING DISTANCE IS REQUIRED. THIS VEHICLE WAS RECALLED FOR SAME PROBLEM IN 2005. I MADE AN ATTEMPT AT MY LOCAL GMC DEALER TO REMEDY THIS CONTINUING PROBLEM, HOWEVER, I WAS INFORMED THAT GENERAL MOTORS WOULD ONLY MAKE ONE ATTEMPT TO REMEDY ISSUE AND THAT I ALREADY HAD USED THAT. THE DEALER REPRESENTATIVE STATED THAT I COULD PULL THE FUSE ON THE ABS AND THE VEHICLE WOULD PERFORM STOPPING WITHOUT THE AID OF ABS AND WOULD STOP NORMALLY IN DRY ENVIRONMENT, WITHOUT THE ASSISTANCE OF ANTI LOCK BRAKES. I FEEL THIS IS A DESIGN PROBLEM AND IS A TREMENDOUS SAFETY ISSUE. I DID TAKE VEHICLE TO ANOTHER MECHANIC WHO DROVE VEHICLE IN HIS PARKING LOT AND THE PROBLEM OCCURRED TO HIM ALMOST CAUSING A CRASH IN HIS LOT. *JB
NHTSA ODI #10461798
62,500 miles · May 4, 2012
Service Brakes, Hydraulic
BRAKE PEDAL GOES TO FLOOR AND IS KICKED BACK, NO BRAKES AT LOW SPEEDS 5 TO 8 MPH. WAS SUBJECT TO RECALL WHEN STILL UNDER MANUFACTURES WARRANTY. PROBLEM IS SAME NOW. NO BRAKES AT LOW SPEEDS. PURCHASED THIS VEHICLE NEW, VERY LOW MILEAGE. GMC WILL NOT RESPOND TO COMPLAINT. THIS IS A SERIOUS ISSUE. *TR
NHTSA ODI #10457500
145,000 miles · Apr 3, 2012
Service Brakes, Hydraulic
ABS ACTIVATES AT SLOW SPEEDS WHEN NOT NEEDED, CAUSING VEHICLE TO BE UNABLE TO STOP IN A REASONABLE DISTANCE. THIS MOST OFTEN OCCURS WHEN PULLING INTO A PARKING SPACE AT SLOW SPEEDS WITH THE STEERING WHEEL TURNED TO THE LEFT OR RIGHT. *TR
NHTSA ODI #10453954
62,500 miles · Jan 23, 2012
Service Brakes, Hydraulic
VEHICLE BRAKE PEDAL GOES TO THE FLOOR AT LOW SPEEDS 5-10MPH DURING STOP. THE ABS LIGHT DOES NOT ILLUMINATE. VERY CLOSE TO SERIOUS ACCIDENT (S). THIS IS NOT A TRACTION OR LACK OF TRACTION ISSUE. THIS SEEMS TO BE WHEEL SPEED SENSORS THAT CONTINUALLY REQUIRE REPLACING. REAR CALIPERS ON THIS VEHICLE WITH LESS THAN 65K MILES HAVE B…
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VEHICLE BRAKE PEDAL GOES TO THE FLOOR AT LOW SPEEDS 5-10MPH DURING STOP. THE ABS LIGHT DOES NOT ILLUMINATE. VERY CLOSE TO SERIOUS ACCIDENT (S). THIS IS NOT A TRACTION OR LACK OF TRACTION ISSUE. THIS SEEMS TO BE WHEEL SPEED SENSORS THAT CONTINUALLY REQUIRE REPLACING. REAR CALIPERS ON THIS VEHICLE WITH LESS THAN 65K MILES HAVE BEEN REPLACED TWICE. BRAKES HAVE BEEN A PROBLEM SINCE NEW. BRAKE LINES ROTTED WITH LESS THAN 60K MILES ON VEHICLE AND GM REFUSED TO CONSIDER THIS A DEFECT WHICH IT WAS AND IS. *TR
NHTSA ODI #10444915
67,340 miles · Jan 20, 2012
Service Brakes, Hydraulic
WAS DRIVING DONW SREET IN CAME TO STOP SIGN BRAKES FAILED, ALMOST WAS HIT BY 2 CARS, HAD TRUCK TOWED TO GARAGE, MECHANIC SAID HE IS REPLACING MORE BRAKE LINES ON GM PRODUCTS THAN EVER BEFORE, SAME THING HAPPENED TO MY 93 ELDORADO. GM IS USING VERY CHEAP BRAKE LINES THAT CORRODE VERY QUICKLY, THEY ARE NOT PROTECTED BE ANY ANTI-CO…
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WAS DRIVING DONW SREET IN CAME TO STOP SIGN BRAKES FAILED, ALMOST WAS HIT BY 2 CARS, HAD TRUCK TOWED TO GARAGE, MECHANIC SAID HE IS REPLACING MORE BRAKE LINES ON GM PRODUCTS THAN EVER BEFORE, SAME THING HAPPENED TO MY 93 ELDORADO. GM IS USING VERY CHEAP BRAKE LINES THAT CORRODE VERY QUICKLY, THEY ARE NOT PROTECTED BE ANY ANTI-CORROSIVE MATERIAL OR SPRAY. TRUCK IS AT AN AUTO SERV WAITING FOR REPAIR, WAS TOLD WILL BE BETWEEN 6-7 HUNDRED TO FIX! GM SHOULD PAY FOR THIS! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) *TT
NHTSA ODI #10444636
102,000 miles · Nov 3, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THE BRAKE LIGHT ILLUMINATED CONSTANTLY, THE VEHICLE LOST BRAKE FLUID PREMATURELY, AND A BRAKE LINE RUPTURED WHILE DRIVING. THE VEHICLE WAS TAKEN TO THE DEALER WHO PERFORMED A DIAGNOSTIC TEST THAT LOCATED THE FAILURE IN THE BRAKE LINES, AND CALIPERS DUE TO CORROSION.…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THE BRAKE LIGHT ILLUMINATED CONSTANTLY, THE VEHICLE LOST BRAKE FLUID PREMATURELY, AND A BRAKE LINE RUPTURED WHILE DRIVING. THE VEHICLE WAS TAKEN TO THE DEALER WHO PERFORMED A DIAGNOSTIC TEST THAT LOCATED THE FAILURE IN THE BRAKE LINES, AND CALIPERS DUE TO CORROSION. THE VEHICLE WAS REPAIRED. THE DEALER REPLACED THE BRAKE LINES, AND CALIPERS. THE FAILURE MILEAGE WAS 102,000 AND THE CURRENT MILEAGE WAS 109,963. UPDATED 12/20/11*LJ UPDATED 01/19/12
NHTSA ODI #10434074
140,100 miles · Oct 25, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE ATTEMPTING TO REVERSE FROM A RESIDENTIAL DRIVEWAY WHILE TOWING A TRAILER, THE CONTACT APPLIED PRESSURE TO THE BRAKES HOWEVER, THE PEDAL WENT TO THE FLOORBOARD ABNORMALLY AND DID NOT STOP THE VEHICLE. THE DEALER HAD NOT BEEN NOTIFIED. THE MANUFACTURER WAS MADE AWARE OF THE FAI…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE ATTEMPTING TO REVERSE FROM A RESIDENTIAL DRIVEWAY WHILE TOWING A TRAILER, THE CONTACT APPLIED PRESSURE TO THE BRAKES HOWEVER, THE PEDAL WENT TO THE FLOORBOARD ABNORMALLY AND DID NOT STOP THE VEHICLE. THE DEALER HAD NOT BEEN NOTIFIED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHO DIAGNOSED THE VEHICLE WITH RUSTED AND CORRODED BRAKE LINES. THE BRAKE LINES WERE REPLACED BY THE MECHANIC. THE CURRENT MILEAGE IS 140,272 AND THE APPROXIMATE FAILURE MILEAGE WAS 140,100. UPDATED 11/03/11. *JB
NHTSA ODI #10432757
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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