NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
509 reports176,000 miles · Sep 20, 2011
EquipmentStructure
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT HE HEARD A RATTLING FROM UNDER THE VEHICLE. HE THEN INSPECTED THE VEHICLE AND REALIZED THAT THE SPARE TIRE HAD SEPARATED FROM THE VEHICLE WITHOUT HIM NOTICING. THE CONTACT ALSO MENTIONED THAT THE CABLE WAS CORRODED. THE VEHICLE WAS NOT TAKEN TO THE DE…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT HE HEARD A RATTLING FROM UNDER THE VEHICLE. HE THEN INSPECTED THE VEHICLE AND REALIZED THAT THE SPARE TIRE HAD SEPARATED FROM THE VEHICLE WITHOUT HIM NOTICING. THE CONTACT ALSO MENTIONED THAT THE CABLE WAS CORRODED. THE VEHICLE WAS NOT TAKEN TO THE DEALER AND THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 176,000. ..UPDATED 10/21/11 *BF UPDATED 10/26/11
NHTSA ODI #10426479
78,300 miles · Sep 20, 2011
Service Brakes, HydraulicCrash
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 8 MPH, SHE APPLIED THE BRAKES BUT THE VEHICLE DID NOT STOP UNTIL CRASHING IN HER FRONT YARD. THE CRASH WAS MINOR AND THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE THE CONTACT WAS INFORMED THAT SOME OF THE BRAKING SENSORS WOULD…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING 8 MPH, SHE APPLIED THE BRAKES BUT THE VEHICLE DID NOT STOP UNTIL CRASHING IN HER FRONT YARD. THE CRASH WAS MINOR AND THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE THE CONTACT WAS INFORMED THAT SOME OF THE BRAKING SENSORS WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE BUT OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 78,300. THE VIN WAS NOT AVAILABLE.
NHTSA ODI #10426428
Mileage unknown · Sep 8, 2011
Fuel System, GasolineService Brakes, HydraulicStructure
BRAKE LINES AND FUEL LINES MUST BE REPLACED DUE TO EXCESSIVE RUSTING. BLEW A BRAKE LINE AND HAD NO BRAKES AT ALL. ADDITIONALLY, THE FRAME HAS RUSTED THROUGH AND HAD TO BE WELDED. LOOKING AT REPAIR COSTS BETWEEN $1500 - $3000 DEPENDING UPON HOW THIS GOES. *TR
NHTSA ODI #10424268
78,000 miles · Sep 6, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE WAS PREVIOUSLY REPAIRED UNDER THE RECALL ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE CONTACT STATED THE ANTI LOCK BRAKING SYSTEM WOULD ENGAGE WHILE BRAKING AT LOW SPEEDS. THE VEHICLE WAS TAKE…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE WAS PREVIOUSLY REPAIRED UNDER THE RECALL ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE CONTACT STATED THE ANTI LOCK BRAKING SYSTEM WOULD ENGAGE WHILE BRAKING AT LOW SPEEDS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP, WHERE THE CONTACT WAS ADVISED TO DISCONNECT THE ANTI LOCK BRAKING MODULE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 78,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10423895
89,454 miles · Sep 4, 2011
Service Brakes, Hydraulic
AFTER SECURING 10 PALLETS IN THE BED OF THE TRUCK AND BEGINNING THE DRIVE HOME FROM THE LOCAL LUMBER YARD, I DEPRESSED THE BREAKS TO STOP AT THE FIRST LIGHT. THE BRAKE PEDAL WENT TO THE FLOOR, SO I DOWNSHIFTED AND BEGAN TO DEPRESS THE EMERGENCY BRAKE TO STOP. AT THIS POINT I HAD MY WIFE PICK UP THE CHILDREN SO THEY WOULD NOT…
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AFTER SECURING 10 PALLETS IN THE BED OF THE TRUCK AND BEGINNING THE DRIVE HOME FROM THE LOCAL LUMBER YARD, I DEPRESSED THE BREAKS TO STOP AT THE FIRST LIGHT. THE BRAKE PEDAL WENT TO THE FLOOR, SO I DOWNSHIFTED AND BEGAN TO DEPRESS THE EMERGENCY BRAKE TO STOP. AT THIS POINT I HAD MY WIFE PICK UP THE CHILDREN SO THEY WOULD NOT BE IN THE VEHICLE WITH ME. I PROCEEDED HOME (LESS THAT 1.5 MILES) AT A REDUCED SPEED OF APPROXIMATELY 10 MILES AN HOUR. DEPRESSING THE BRAKE PROVIDED MARGINAL STOPPING CAPABILITY. IT WAS SUFFICIENT STOPPING POWER FOR A VEHICLE TRAVELING ABOUT 10 MILES PER HOUR AT 100 FEET. UNDER THE VEHICLE AFTER THE ANTILOCK BRAKING BOX, THE ONE LINE WAS SPRAYING BRAKE FLUID WHEN THE PEDAL WAS DEPRESSED. THE RUST WAS SO SEVERE, WHEN GOING TO CUT THE LINE, THE LINE ACTUALLY CRUSHED INWARDS WITH NO APPARENT GOOD METAL. IN SPLICING THE LINE I WAS UNABLE TO FIND THE PROPER CLEARANCE TO RECONNECT THE LINE TO THE ANTILOCK BRAKING BOX, SO MY MECHANIC WILL BE WORKING THIS SHORTLY. THE OTHER LINES LOOK EQUALLY BAD SO I WILL HAVE THOSE REPLACED AS WELL. I HAVE NEVER SEEN RUST THIS BAD ON MY VEHICLES EVEN OLDER THAN THIS ONE. PICTURES AND OR PIECES OF THE BRAKE LINE CAN BE SUPPLIED UPON REQUEST. *TR
NHTSA ODI #10423247
55,079 miles · Sep 1, 2011
Service Brakes, Hydraulic
NHTSA INVESTIGATION NUMBER: EA11001 - BRAKE LINE FAILURE, STEEL BRAKE LINE UNDER LEFT SIDE OF CAB RUPTURED DUE TO RUST AND BRAKE FLUID LEAKED OUT OF BRAKE SYSTEM. UPON FURTHER INSPECTION, FOUND ALL 4 STEEL BRAKE LINES ARE RUSTED VERY BADLY UNDER LEFT SIDE OF CAB, ADDITIONAL BRAKE LINE RUST FOUND ON ALL STEEL BRAKE LINES, UNDE…
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NHTSA INVESTIGATION NUMBER: EA11001 - BRAKE LINE FAILURE, STEEL BRAKE LINE UNDER LEFT SIDE OF CAB RUPTURED DUE TO RUST AND BRAKE FLUID LEAKED OUT OF BRAKE SYSTEM. UPON FURTHER INSPECTION, FOUND ALL 4 STEEL BRAKE LINES ARE RUSTED VERY BADLY UNDER LEFT SIDE OF CAB, ADDITIONAL BRAKE LINE RUST FOUND ON ALL STEEL BRAKE LINES, UNDER HOOD IN ENGINE COMPARTMENT, ALONG FRAME, UNDER CAB, AND UNDER TRUCK BED. ONE OF THESE STEEL BRAKE LINES RUPTURED RESULTING IN COMPLETE BRAKE SYSTEM FAILURE DUE TO LOSS OF BRAKE FLUID WHILE DRIVING! VERY DANGEROUS. DEALERSHIP REPAIRED ONE FAILED STEEL BRAKE LINE, BUT WOULD NOT REPLACE ALL RUSTED BRAKE LINES. THIS FAILURE OCCURRED WHILE TRAVELING 45 MPH AND APPROACHING A RED LIGHT AT BUSY INTERSECTION. BRAKE PEDDLE WENT TO FLOOR, NO BRAKES, DOWN SHIFT AUTOMATIC TRANSMISSION TO 2ND GEAR AND USED EMERGENCY BRAKE. I HAD TO SWERVE AND CHANGED LANES THREE TIMES TO AVOID ACCIDENT. THERE WAS NO WARNING TO THIS FAILURE. ALSO VEHICLE IS METICULOUSLY MAINTAINED. PLEASE HELP. *TR
NHTSA ODI #10422941
82,532 miles · Aug 27, 2011
Service Brakes, Hydraulic
I OWN A 2002 CHEVROLET SILVERADO. THE METAL BRAKE LINE WHICH RUNS ALONG THE FRAME, AT THE POINT WHERE IT CONNECTS TO A FLEXIBLE HOSE THAT SERVICES THE REAR BRAKES HAS RUSTED THROUGH AND AS A CONSEQUENCE ALL OF THE BRAKE FLUID HAS LEAKED OUT OF THE MASTER CYLINDER RESERVOIR. *TT
NHTSA ODI #10422282
54,000 miles · Aug 27, 2011
Service Brakes, Hydraulic
HAS OCCURRED ON MULTIPLE OCCASIONS. WHILE DRIVING- DEPRESSED BRAKE PEDAL, WHICH WENT TO FLOORBOARD AND INSUFFICIENTLY PROVIDED BRAKING TO STOP VEHICLE. NO WARNING PROVIDED. WAS ABLE TO PULL TO SIDE OF ROAD BEFORE STRIKING VEHICLE IN FRONT OF ME. MECHANIC INDICATED IT IS CORRODED BREAK LINES. HAD EXPERIENCED SIMILAR PROBLEM(P…
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HAS OCCURRED ON MULTIPLE OCCASIONS. WHILE DRIVING- DEPRESSED BRAKE PEDAL, WHICH WENT TO FLOORBOARD AND INSUFFICIENTLY PROVIDED BRAKING TO STOP VEHICLE. NO WARNING PROVIDED. WAS ABLE TO PULL TO SIDE OF ROAD BEFORE STRIKING VEHICLE IN FRONT OF ME. MECHANIC INDICATED IT IS CORRODED BREAK LINES. HAD EXPERIENCED SIMILAR PROBLEM(POOR BRAKING APPROX. 4000 MILES AGO DUE TO CORRODED SENSOR. HAVE NOT YET REPAIRED VEHICLE. UNUSABLE. *TT
NHTSA ODI #10421677
62,000 miles · Aug 16, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET 1500. THE CONTACT STATED THAT WHILE DRIVING 25 MPH, HE ATTEMPTED TO ENGAGE THE BRAKES, BUT THE PEDAL DEPRESSED ALL THE WAY TO THE FLOOR. THE CONTACT INSPECTED THE VEHICLE AND REALIZED THAT THE BRAKE LINES UNDERNEATH THE DRIVERS SIDE DOOR BROKE AS A RESULT OF CORROSION. THE MANUFACTURER WAS …
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TL* THE CONTACT OWNS A 2002 CHEVROLET 1500. THE CONTACT STATED THAT WHILE DRIVING 25 MPH, HE ATTEMPTED TO ENGAGE THE BRAKES, BUT THE PEDAL DEPRESSED ALL THE WAY TO THE FLOOR. THE CONTACT INSPECTED THE VEHICLE AND REALIZED THAT THE BRAKE LINES UNDERNEATH THE DRIVERS SIDE DOOR BROKE AS A RESULT OF CORROSION. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 62,000....UPDATED 12/03/12 *BF THE DEALER REPLACED THE BRAKE LINES AND ONE CALIPER. UPDATED 01/05/12
NHTSA ODI #10419725
55,000 miles · Aug 10, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE THE CONTACT WAS DRIVING APPROXIMATELY 5 MPH APPROACHING A TRAFFIC STOP SIGN, PRESSURE WAS APPLIED TO THE BRAKE PEDAL, SUDDENLY THE ANTI-LOCK BRAKE SYSTEM ENGAGED AND THE VEHICLE ROLLED FORWARD. IN 2005, THE VEHICLE WAS REPAIRED UNDER A MANUFACTURER VOLUNTARY RECALL PERT…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE THE CONTACT WAS DRIVING APPROXIMATELY 5 MPH APPROACHING A TRAFFIC STOP SIGN, PRESSURE WAS APPLIED TO THE BRAKE PEDAL, SUDDENLY THE ANTI-LOCK BRAKE SYSTEM ENGAGED AND THE VEHICLE ROLLED FORWARD. IN 2005, THE VEHICLE WAS REPAIRED UNDER A MANUFACTURER VOLUNTARY RECALL PERTAINING TO THE ANTI-LOCK BRAKE SYSTEM. THE IDENTICAL FAILURE RECURRED IN JANUARY OF 2011 AND WAS REPAIRED BY THE DEALER. MOST RECENTLY, THE BRAKES COMPLETELY FAILED TO RESPOND UPON ENGAGING AND THE VEHICLE WAS TOWED TO THE DEALER. THE CONTACT WAS WAITING UPON A RESPONSE FROM THE DEALER IN REGARDS TO THE CAUSE OF FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 55,000.
NHTSA ODI #10418416
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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