NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
181 reports100,000 miles · May 1, 2011
Fuel System, Other
REFERENCE THE RECENT NEWSPAPER ARTICLE INVOLVING THE FAULTY FUEL GAUGES ON VEHICLES.. I JUST PURCHASED A 2000 GM SIERRA P/U TRUCK THAT I LATER FOUND HAD A DEFECTIVE FUEL LEVEL SENSOR INSIDE THE TANK. THINKING I HAD A 1/2 TANK OF GAS I GOT STRANDED ON A SIDE ROAD 22 MILES FROM HOME. IT COST ME A $1,000.00 TO REPLACE THE UNIT AS …
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REFERENCE THE RECENT NEWSPAPER ARTICLE INVOLVING THE FAULTY FUEL GAUGES ON VEHICLES.. I JUST PURCHASED A 2000 GM SIERRA P/U TRUCK THAT I LATER FOUND HAD A DEFECTIVE FUEL LEVEL SENSOR INSIDE THE TANK. THINKING I HAD A 1/2 TANK OF GAS I GOT STRANDED ON A SIDE ROAD 22 MILES FROM HOME. IT COST ME A $1,000.00 TO REPLACE THE UNIT AS WELL AS THE FUEL PUMP WHICH ARE ONE UNIT. THE DEALER TOLD ME THE PROBLEM IS COMMON ON ALL LARGE GM VEHICLES. *TR
NHTSA ODI #10398397
98,000 miles · Mar 9, 2011
Service Brakes, Hydraulic
BRAKE LINES CORRODED AND FAILED DURING DRIVING ON MAJOR FREEWAY. *TR
NHTSA ODI #10386997
53,000 miles · Feb 23, 2011
Service Brakes, Hydraulic
HAVE TO REPLACE ALL BRAKE LINES 2000 GMC SIERRA 4 X4 EXTENDED CAB. 53,000 MI. I HAVE BLOWN OUT BRAKE LINES 4 TIMES OVER LAST THREE YEARS. ALL LINES TO ANTI LOCK VALVE RUSTED THROUGH, FRONT BRAKE ,DRIVERS SIDE,REAR LINE DRIVERS SIDE. *TR
NHTSA ODI #10384097
104,434 miles · Feb 1, 2011
Service Brakes, Hydraulic
THE ORIGINAL FLEXIBLE BRAKE HOSE ON THE FRONT PASSENGER SIDE OF MY 2000 GMC SIERRA VEHICLE FAILED RESULTING IN THE LOSS OF FRONT BRAKES. IT APPEARS THAT THE HOSE IS TOO LONG AND THE HOSE RUBBED ON THE RIM. THE DELCO REPLACEMENT THAT I PURCHASED HAS BEEN TOTALLY REDESIGNED. IT IS MUCH SHORTER AND THE CONNECTION TO THE CALIPER …
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THE ORIGINAL FLEXIBLE BRAKE HOSE ON THE FRONT PASSENGER SIDE OF MY 2000 GMC SIERRA VEHICLE FAILED RESULTING IN THE LOSS OF FRONT BRAKES. IT APPEARS THAT THE HOSE IS TOO LONG AND THE HOSE RUBBED ON THE RIM. THE DELCO REPLACEMENT THAT I PURCHASED HAS BEEN TOTALLY REDESIGNED. IT IS MUCH SHORTER AND THE CONNECTION TO THE CALIPER HAS TO BE ANGLED AT A 45 DEGREE ANGLE, SO THAT THE WILL BE NO CONTACT WITH THE RIM. AFTER REPLACING THE PASSENGER SIDE, I CHECKED THE DRIVER'S SIDE HOSE AND FOUND THE SAME PROBLEM. THE HOSE SHOWS RUBBING IS OCCURRING. I WILL HAVE TO PUT A REPLACEMENT HOSE ON THAT SIDE ALSO. *LN
NHTSA ODI #10379844
90,012 miles · Jan 19, 2011
Service Brakes, Electric
I OWN A 2000 GMC SIERRA Z71 P/U TRUCK. WITH 90043 MILES..I HAVE A PROBLEM WITH MY BRAKE LINES RUSTING OUT CAUSING NO BRAKES. I CALLED A DEALER TO ASK THEM IF THEY HAVE HAD ANY RECALLS OR COMPLAINTS ABOUT THE BRAKE LINES RUSTING OUT.THEY TOLD ME THAT GM IS LOOKING INTO THE PROBLEMS OF THE BRAKE LINES.WHAT ARE THEY WAITING FOR ANO…
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I OWN A 2000 GMC SIERRA Z71 P/U TRUCK. WITH 90043 MILES..I HAVE A PROBLEM WITH MY BRAKE LINES RUSTING OUT CAUSING NO BRAKES. I CALLED A DEALER TO ASK THEM IF THEY HAVE HAD ANY RECALLS OR COMPLAINTS ABOUT THE BRAKE LINES RUSTING OUT.THEY TOLD ME THAT GM IS LOOKING INTO THE PROBLEMS OF THE BRAKE LINES.WHAT ARE THEY WAITING FOR ANOTHER FATALITY? ME AND MY WIFE COULD HAVE BEEN KILLED. I HAVE MY TRUCK SITTING IN GARAGE AWAITING WHAT TO DO. I THOUGHT THAT GMC WERE PROFESSIONALS. I BOUGHT USA, AWAITING REPLY. THANK YOU. *TR
NHTSA ODI #10377943
85,000 miles · Jan 18, 2011
Service Brakes, Hydraulic
BRAKES FAILED ENTIRELY. LUCKILY I HAD AN EMERGENCY BRAKE. 7 BRAKE LINES HAD RUSTED OUT AND HAD TO BE REPLACED. - COST $1076. I HAVE ALSO HAD TO REPLACE MY REAR BRAKES 3 TIMES IN 86000 MILES. FRONT BRAKES WERE REPLACED ONLY ONCE. MECHANIC SAYS THAT PERHAPS THE PROPORTIONING VALUE IS NG. THERE WAS A RECALL BUT GM SAID IT DID NOT…
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BRAKES FAILED ENTIRELY. LUCKILY I HAD AN EMERGENCY BRAKE. 7 BRAKE LINES HAD RUSTED OUT AND HAD TO BE REPLACED. - COST $1076. I HAVE ALSO HAD TO REPLACE MY REAR BRAKES 3 TIMES IN 86000 MILES. FRONT BRAKES WERE REPLACED ONLY ONCE. MECHANIC SAYS THAT PERHAPS THE PROPORTIONING VALUE IS NG. THERE WAS A RECALL BUT GM SAID IT DID NOT INCLUDE MY VEHICLE. I THINK THIS WAS A LIE. *TR
NHTSA ODI #10377072
69,287 miles · Jan 10, 2011
Service Brakes, Hydraulic
WHILE DRIVING HOME I PUSHED THE BRAKE PEDAL AND EXPERIENCED A RUPTURED BRAKE LINE UNDER THE DRIVERS SIDE DOOR. LUCKILY NO CRASH OCCURRED BECAUSE I WAS ON A BACK ROAD WITH NO TRAFFIC. AFTER INSPECTION IT WAS CONFIRMED THAT ALL BRAKE LINES WERE VERY BADLY CORRODED AND ALL WERE READY TO FAIL. THE WORST DAMAGE APPEARED NEAR THE W…
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WHILE DRIVING HOME I PUSHED THE BRAKE PEDAL AND EXPERIENCED A RUPTURED BRAKE LINE UNDER THE DRIVERS SIDE DOOR. LUCKILY NO CRASH OCCURRED BECAUSE I WAS ON A BACK ROAD WITH NO TRAFFIC. AFTER INSPECTION IT WAS CONFIRMED THAT ALL BRAKE LINES WERE VERY BADLY CORRODED AND ALL WERE READY TO FAIL. THE WORST DAMAGE APPEARED NEAR THE WHEELS WHICH I WOULD ASSUME IS DUE TO ROAD SALT AND MOISTURE. *TR
NHTSA ODI #10375401
73,100 miles · Jan 5, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 GMC SIERRA 1500 4X4. WHILE DRIVING APPROXIMATELY 5 MPH HE ENGAGED THE BRAKES AND THE VEHICLE DID NOT STOP. HE APPLIED PRESSURE TO THE BRAKES IN ORDER TO STOP THE VEHICLE. SEVERAL VEHICLES WERE BLOWING THEIR HORNS IN ORDER TO AVOID A CRASH BECAUSE THE VEHICLE STOPPED IN AN INTERSECTION. THE VEHICLE WAS…
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TL*THE CONTACT OWNS A 2000 GMC SIERRA 1500 4X4. WHILE DRIVING APPROXIMATELY 5 MPH HE ENGAGED THE BRAKES AND THE VEHICLE DID NOT STOP. HE APPLIED PRESSURE TO THE BRAKES IN ORDER TO STOP THE VEHICLE. SEVERAL VEHICLES WERE BLOWING THEIR HORNS IN ORDER TO AVOID A CRASH BECAUSE THE VEHICLE STOPPED IN AN INTERSECTION. THE VEHICLE WAS TAKEN TO THE DEALER WHO CONFIRMED THAT THE WHEEL SPEED SENSOR NEEDED TO BE REPLACED OR CLEANED AND WAS THE CAUSE OF THE FAILURE. THE CONTACT WILL BE RESPONSIBLE FOR THE REPAIR COST. THE CONTACT CALLED THE MANUFACTURER AND REFERENCED RECALL 05V379000, SERVICE BRAKES, HYDRAULIC:ANTI LOCK AND WAS ADVISED THAT THE RECALL REPAIR HAD ALREADY BEEN PERFORMED ON THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 73,100 AND THE CURRENT MILEAGE WAS 73,330.
NHTSA ODI #10374745
130,000 miles · Dec 19, 2010
Fuel System, GasolineService Brakes, Hydraulic
I HAVE A 2000 GMC SIERRA THAT HAD BRAKE LINE RUST THROUGH CAUSING BRAKE FAILURE. I GOT UNDER THE VEHICLE TO TRY AND CHANGE THE LINE AND FOUND ALL THE LINES ARE SEVERELY RUSTED AS IS THE FUEL LINES. YES MY TRUCK IS OLD AND I LIVE IN THE RUST BELT OF N.Y BUT SOMETHING NEEDS TO BE DONE EITHER N.Y STOP USING SALT OR THE VEHICLES NE…
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I HAVE A 2000 GMC SIERRA THAT HAD BRAKE LINE RUST THROUGH CAUSING BRAKE FAILURE. I GOT UNDER THE VEHICLE TO TRY AND CHANGE THE LINE AND FOUND ALL THE LINES ARE SEVERELY RUSTED AS IS THE FUEL LINES. YES MY TRUCK IS OLD AND I LIVE IN THE RUST BELT OF N.Y BUT SOMETHING NEEDS TO BE DONE EITHER N.Y STOP USING SALT OR THE VEHICLES NEED TO BE BUILT WITH LINES THAT DON'T RUST OUT. THIS ISSUE I THINK IS A SAFETY ISSUE THAT WOULD BE EASILY FIXED BY EITHER NO MORE SALT OR BETTER LINE IN THE VEHICLES THAT DON'T RUST THROUGH. *TR
NHTSA ODI #10371214
62,000 miles · Nov 29, 2010
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 GMC SIERRA 1500. WHILE THE CONTACT WAS DRIVING 5 MPH, THE BRAKE PEDAL DROPPED TO THE FLOORBOARD AND BRAKE FLUID SPRAYED OUT. THE CONTACT USED THE EMERGENCY BRAKE AND WAS ABLE TO STOP. THE VEHICLE WAS TOWED TO A LOCAL REPAIR SHOP BUT WAS NOT REPAIRED. THE MECHANIC STATED THAT THE ENTIRE BRAKE LINE NEEDE…
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TL*THE CONTACT OWNS A 2000 GMC SIERRA 1500. WHILE THE CONTACT WAS DRIVING 5 MPH, THE BRAKE PEDAL DROPPED TO THE FLOORBOARD AND BRAKE FLUID SPRAYED OUT. THE CONTACT USED THE EMERGENCY BRAKE AND WAS ABLE TO STOP. THE VEHICLE WAS TOWED TO A LOCAL REPAIR SHOP BUT WAS NOT REPAIRED. THE MECHANIC STATED THAT THE ENTIRE BRAKE LINE NEEDED TO BE REPLACED AS IT WAS RUSTED. THE FAILURE MILEAGE WAS 62,000.
NHTSA ODI #10368158
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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