NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
70 reportsClear category filter78,858 miles · May 14, 2009
Service Brakes, Hydraulic
BRAKE FAILURE DUE TO RUSTED BRAKE LINE. A PANIC STOP WAS ATTEMPTED TO AVOID A MERGING VEHICLE. THE BRAKE PEDAL WENT TO THE FLOOR WHEN THE LINE BROKE. I WAS ABLE TO AVOID THE VEHICLE THE REMAINING FLUID AND SLOW SPEED STOPPED MY VEHICLE. I HAVE HAD OTHER PROBLEMS IN THE PAST WITH THE BRAKE PEDAL BEING SOFT AND ABLE TO GO TO THE…
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BRAKE FAILURE DUE TO RUSTED BRAKE LINE. A PANIC STOP WAS ATTEMPTED TO AVOID A MERGING VEHICLE. THE BRAKE PEDAL WENT TO THE FLOOR WHEN THE LINE BROKE. I WAS ABLE TO AVOID THE VEHICLE THE REMAINING FLUID AND SLOW SPEED STOPPED MY VEHICLE. I HAVE HAD OTHER PROBLEMS IN THE PAST WITH THE BRAKE PEDAL BEING SOFT AND ABLE TO GO TO THE FLOOR. BUT IT REBOUNDED AND STOPPED THE TRUCK. THERE IS ALSO ABS QUIRKS AS WELL. VEHICLE IS A 1999 GMC SIERRA EXTENDED CAB 3 DOOR 4X4 5.3L 78,000 MILES. I FOUND THE LEAK IT WAS INSIDE THE FRAME UNDER THE DRIVERS DOOR IN A CLUSTER OF BRAKE LINES ATTACHING TO THE ABS PUMP. ALL OF THE BRAKE LINES IN THE AREA WERE SERIOUSLY RUSTED AND HAVE TO BE REPLACED. THE LINES APROX. 1 FOOT FROM THE ABS PUMP ARE IN GOOD SHAPE. THE BRAKE LINES SEEM TO BE RUSTED HOWEVER THE FRAME, UNDERBODY FLOOR AND OTHER EQUIPMENT LOCATED IN THE SAME AREA ARE NOT SHOWING A RUST PROBLEM. THIS RUST PROBLEM SHOULD BE CHECKED AND INSPECTED REGULARLY. I THINK A STAINLESS STEEL OR OTHER RUST RESISTANT MATERIAL SHOULD USED IN THIS LOCATION. *TR
NHTSA ODI #10268722
116,000 miles · Mar 19, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 5 MPH ON A GRAVEL ROAD SURFACE, THERE WAS NO RESPONSE WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL. IT TOOK EXCESSIVE FORCE JUST TO STOP THE VEHICLE. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE STOPPING DISTANCE INCREASED. THERE WERE NO WARNING INDI…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 5 MPH ON A GRAVEL ROAD SURFACE, THERE WAS NO RESPONSE WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL. IT TOOK EXCESSIVE FORCE JUST TO STOP THE VEHICLE. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE STOPPING DISTANCE INCREASED. THERE WERE NO WARNING INDICATORS ILLUMINATED ON THE INSTRUMENT PANEL. THE FAILURE OCCURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING AND THE TECHNICIAN STATED THAT THE FRONT WHEEL SPEED SENSOR WAS CORRODED AND CAUSED THE FAILURE. THE VEHICLE IS IN THE PROCESS OF BEING REPAIRED. THE VIN WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE 116,000.
NHTSA ODI #10262463
Mileage unknown · Nov 25, 2008
Service Brakes, HydraulicCrash
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE ATTEMPTING TO STOP THE VEHICLE AT A LOW RATE OF SPEED, THE ABS ENGAGED AND THE VEHICLE COULD NOT BE STOPPED UNTIL THE BRAKES WERE DISENGAGED, ENGAGED, AND PUMPED. ON SEPTEMBER 4, 2003, AT 46,663 MILES, THE FAILURE OCCURRED, BUT ONLY ONE SENSOR WAS REPLACED AT THAT TIME. ON SEP…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE ATTEMPTING TO STOP THE VEHICLE AT A LOW RATE OF SPEED, THE ABS ENGAGED AND THE VEHICLE COULD NOT BE STOPPED UNTIL THE BRAKES WERE DISENGAGED, ENGAGED, AND PUMPED. ON SEPTEMBER 4, 2003, AT 46,663 MILES, THE FAILURE OCCURRED, BUT ONLY ONE SENSOR WAS REPLACED AT THAT TIME. ON SEPTEMBER 20, 2004, AT 54,318 MILES, THE FAILURE RECURRED AND A SECOND SENSOR WAS REPLACED. A RECALL WAS ISSUED AND THE VEHICLE WAS REPAIRED ACCORDINGLY ON FEBRUARY 21, 2006, IN WHICH BOTH SENSORS WERE REPLACED AT 58,869 MILES. ON MARCH 3, 2006, THE CONTACT RETRIEVED THE VEHICLE, BUT IT HAD BEEN CRASHED INTO THE WALL. THE MECHANIC REPLACED THE FRONT PASSENGER SIDE HUB, WHICH WAS CLAIMED TO HAVE CAUSED THE CRASH. THE FRONT END OF THE VEHICLE WAS POORLY REPAIRED. IN MARCH OF 2008, THE ABS FAILURE RECURRED AND THE CONTACT TOOK THE VEHICLE TO BE REPAIRED AGAIN, BUT WAS INFORMED THAT IT WAS NO LONGER UNDER WARRANTY. THE CONTACT DISCONNECTED THE ABS. THE CURRENT MILEAGE WAS 95,500 AND THE FAILURE MILEAGE WAS UNKNOWN.
NHTSA ODI #10250309
177,286 miles · Oct 8, 2008
Service Brakes, Hydraulic
BRAKE LINE RUNNING ALONG FRAME TO REAR WHEELS RUPTURED WHEN SHIFTING FROM PARK TO DRIVE. SHIFT INTERLOCK REQUIRES BRAKE DEPRESSED TO SHIFT FROM PARK TO DRIVE. BRAKE LINES RUNNING FROM FIREWALL TO REAR OF VEHICLE ALONG INSIDE OF FRAME RAIL ARE CORRODED AND SOFT SO BADLY AS TO NEED REPLACING. LIKE VEHICLE IN SHOP FOR IDENTICAL I…
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BRAKE LINE RUNNING ALONG FRAME TO REAR WHEELS RUPTURED WHEN SHIFTING FROM PARK TO DRIVE. SHIFT INTERLOCK REQUIRES BRAKE DEPRESSED TO SHIFT FROM PARK TO DRIVE. BRAKE LINES RUNNING FROM FIREWALL TO REAR OF VEHICLE ALONG INSIDE OF FRAME RAIL ARE CORRODED AND SOFT SO BADLY AS TO NEED REPLACING. LIKE VEHICLE IN SHOP FOR IDENTICAL ISSUE. WHEN BRAKE LINE RUPTURED, THERE ARE NO BRAKES ON VEHICLE AT ALL DUE TO A SINGLE RESERVOIR VICE TWIN RESERVOIRS ON MOST VEHICLES TO SEPARATE FRONT AND REAR BRAKE SYSTEMS. BRAKE LINE POSSIBLY MADE OF MATERIAL UNSUITABLE FOR LONG TERM USAGE. BRAKES LINES ALSO ARE PLACE IN AN AREA THAT WILL COLLECT CORROSIVE MATERIAL FROM ROADWAY FROM VEHICLE TIRES. NO CRASH, BUT $600 REQUIRED IN REPAIRS. IF MOVING WHEN BRAKE LINE RUPTURED, THERE IS HIGH PROBABILITY OF SEVERE CRASH. *TR
NHTSA ODI #10244721
55,000 miles · Apr 10, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT RECEIVED A RECALL NOTICE FOR THE SERVICE BRAKES, HYDRAULIC:ANTILOCK:WHEEL SPEED SENSOR. ALTHOUGH THERE WERE NO FAILURES AT THE TIME, THE CONTACT HAD THE RECALL REPAIR PERFORMED. A FEW THOUSAND MILES AFTER THE REPAIR, THE BRAKES BEGAN TO FAIL. WHEN APPROACHING A STOP SIG…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT RECEIVED A RECALL NOTICE FOR THE SERVICE BRAKES, HYDRAULIC:ANTILOCK:WHEEL SPEED SENSOR. ALTHOUGH THERE WERE NO FAILURES AT THE TIME, THE CONTACT HAD THE RECALL REPAIR PERFORMED. A FEW THOUSAND MILES AFTER THE REPAIR, THE BRAKES BEGAN TO FAIL. WHEN APPROACHING A STOP SIGN, TRAFFIC LIGHT, AND/OR DURING ACCELERATION THE BRAKES GRAB. THIS CAUSES THE VEHICLE TO LUNG, LURCH, AND/OR JERK. THE FAILURE OCCURS INTERMITTENTLY AND WITHOUT WARNING. THE DEALER STATED THAT SINCE THE RECALL REPAIR WAS PREVIOUSLY PERFORMED, THE CONTACT WAS RESPONSIBLE FOR ANY ADDITIONAL REPAIRS. THE RECALL NUMBER WAS UNKNOWN. THE FAILURE MILEAGE WAS 55,000 AND CURRENT MILEAGE WAS 67,730.
NHTSA ODI #10224121
Mileage unknown · Apr 4, 2008
Electrical SystemService Brakes, Hydraulic
I HAVE CALLED REPEATEDLY AND FILED REPORTS OF ELECTRICAL AND THE BRAKES IN THE 99 GMC SUBURBAN. I HAVE CALLED SEVERAL TIMES ABOUT THE SMELL OF ELECTRICAL BURNING . NO ONE CARED. WIRES HAVE MELTED AND SHORTED OUT THE HEADLIGHTS, TAIL LIGHTS, AIR CONDITIONER ETC. NO ONE HAS DONE ANYTHING AND GMC REFUSES TO DO RECALL. *TR
NHTSA ODI #10223414
118,085 miles · Nov 30, 2007
Service Brakes, HydraulicCrash
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE PULLING INTO A PARKING GARAGE AT 5 MPH, THE BRAKE PEDAL EXTENDED TO THE FLOOR WHEN IT WAS DEPRESSED. THE CONTACT CRASHED INTO A WALL. THE VEHICLE IS CURRENTLY AT THE BODY SHOP AND THE MECHANIC STATED THAT THE ABS FAILED AND DISABLED THE BRAKES. THE VEHICLE WILL BE TAKEN TO TH…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE PULLING INTO A PARKING GARAGE AT 5 MPH, THE BRAKE PEDAL EXTENDED TO THE FLOOR WHEN IT WAS DEPRESSED. THE CONTACT CRASHED INTO A WALL. THE VEHICLE IS CURRENTLY AT THE BODY SHOP AND THE MECHANIC STATED THAT THE ABS FAILED AND DISABLED THE BRAKES. THE VEHICLE WILL BE TAKEN TO THE DEALER TO HAVE THE FAILURE VERIFIED. THE MANUFACTURER INFORMED THE CONTACT THAT HIS INSURANCE COMPANY WOULD NEED TO FILE A CLAIM AND A GM INSPECTOR SHOULD BE AVAILABLE WITHIN SEVERAL DAYS. THE DEALER INFORMATION WAS UNKNOWN. THE CURRENT AND FAILURE MILEAGES WERE 118,085. UPDATED 12-31-07. *KB THE CONSUMER BELIEVED THE ABS MODULE WAS DEFECTIVE.
NHTSA ODI #10210410
130,000 miles · Sep 7, 2007
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE COMING TO A STOP AT 5 MPH, THE BRAKE PEDAL EXTENDED TO THE FLOOR. THE VEHICLE SLID AND STOPPED 3 INCHES AWAY FROM A STORE WINDOW. THE DEALER STATED THAT THE WHEEL SPEED SENSORS FAILED. THE VEHICLE HAS NOT BEEN REPAIRED. THE CURRENT AND FAILURE MILEAGES WERE 130,000.
NHTSA ODI #10202162
16,850 miles · Aug 16, 2007
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING 40 MPH, THE VEHICLE FAILED TO STOP WHEN THE BRAKES WERE DEPRESSED. THE VEHICLE CAME TO A STOP APPROXIMATELY 200 FEET AFTER THE BRAKES WERE APPLIED. THE MECHANIC STATED THAT THE FRONT BRAKE LINES WERE RUSTED AND HE REPLACED THE BRAKE LINES. THERE HAVE BEEN NO OTHER FAI…
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TL*THE CONTACT OWNS A 1999 GMC SIERRA 1500. WHILE DRIVING 40 MPH, THE VEHICLE FAILED TO STOP WHEN THE BRAKES WERE DEPRESSED. THE VEHICLE CAME TO A STOP APPROXIMATELY 200 FEET AFTER THE BRAKES WERE APPLIED. THE MECHANIC STATED THAT THE FRONT BRAKE LINES WERE RUSTED AND HE REPLACED THE BRAKE LINES. THERE HAVE BEEN NO OTHER FAILURES SINCE THE REPAIR. THE FAILURE MILEAGE WAS 16,850 AND CURRENT MILEAGE WAS 16,900.
NHTSA ODI #10199806
37,594 miles · Feb 22, 2007
Service Brakes, Hydraulic
02/22/2007 BRAKE PRESSURE MODULE VALVE (ABS) FAILED. *CC *NM
NHTSA ODI #10184774
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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