NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
614 reports120,000 miles · Jun 2, 2010
Service Brakes, Hydraulic
I WAS DRIVING MY 2000 CHEVROLET SILVERADO PICKUP TRUCK AT 40 MPH AND ATTEMPTED TO APPLY MY BRAKES TO MAKE A LEFT HAND TURN INTO THE HALFMOON FIRE DEPARTMENT DRIVEWAY. WHEN I APPLIED THE BRAKES THEY SUDDENLY DROPPED TO THE FLOOR AND THE TRUCK DID NOT SLOW DOWN. IT COULD HAVE RESULTED IN A SERIOUS ACCIDENT BUT I WAS LUCKY. I IN…
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I WAS DRIVING MY 2000 CHEVROLET SILVERADO PICKUP TRUCK AT 40 MPH AND ATTEMPTED TO APPLY MY BRAKES TO MAKE A LEFT HAND TURN INTO THE HALFMOON FIRE DEPARTMENT DRIVEWAY. WHEN I APPLIED THE BRAKES THEY SUDDENLY DROPPED TO THE FLOOR AND THE TRUCK DID NOT SLOW DOWN. IT COULD HAVE RESULTED IN A SERIOUS ACCIDENT BUT I WAS LUCKY. I INSPECTED THE VEHICLE, AFTER NURSING IT TO A SAFE LOCATION, TO FIND A SEVERELY RUSTY MAIN BRAKE LINE WHICH HAD BURST JUST IN FRONT OF THE GAS TANK ON THE UNDERSIDE OF THE TRUCK ALONG THE FRAME. WE PLAN ON REPLACING THE BRAKE LINE OURSELVES AND HAVE NOT YET DETERMINED COST AS THIS HAPPENED LAST NIGHT AT 6:30 PM. *TR
NHTSA ODI #10334282
109,000 miles · May 20, 2010
Service Brakes, Hydraulic
I WAS TOWING A SMALL DUMP TRAILER ON MY FARM USING MY 2000 CHEVY SILVERADO 1500 WHEN THE BRAKE PEDAL WENT TO THE FLOOR. LOST ALL USE OF BRAKES. CRAWLED UNDER THE TRUCK AND DISCOVERED THAT BRAKE LINES ARE ALL COMPLETELY RUSTY AND HAD RUSTED THROUGH CAUSING LOSS OF FLUID AND BRAKE PRESSURE. *TR
NHTSA ODI #10331328
108,000 miles · May 17, 2010
Service Brakes, Hydraulic
2000 CHEVROLET SILVERADO 1500 4WD PICKUP - CORRODED BRAKE LINE. FRONT PASSENGER BRAKE HOSE TO CALIPER END COMPLETELY ROTTED (I.E RUST), LINE LEAKED AND LOST PEDAL FIRMNESS. I IMMEDIATELY TOOK NOTICE AND REPAIRED MY SELF WITH NEW LINE. ALL OTHER BRAKE LINE EXHIBIT SIGNS OF SEVERE CORROSION ALONG WITH FUEL LINES AND TRANSMISSIO…
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2000 CHEVROLET SILVERADO 1500 4WD PICKUP - CORRODED BRAKE LINE. FRONT PASSENGER BRAKE HOSE TO CALIPER END COMPLETELY ROTTED (I.E RUST), LINE LEAKED AND LOST PEDAL FIRMNESS. I IMMEDIATELY TOOK NOTICE AND REPAIRED MY SELF WITH NEW LINE. ALL OTHER BRAKE LINE EXHIBIT SIGNS OF SEVERE CORROSION ALONG WITH FUEL LINES AND TRANSMISSION LINES. I WOULD NOT EXPECT THIS SEVERE CORROSION ON A 1970 CHEVY PICKUP, LET ALONE A 2000. NEW STEEL BRAKE LINES ARE NOT AVAILABLE; ONLY THE HOSES LEADING TO CALIPERS. HARD LINES WILL NEED TO BE FABRICATED WHICH IS LABOR INTENSIVE AND EXPENSIVE. VERY DANGEROUS. *TR
NHTSA ODI #10330777
99,000 miles · May 12, 2010
StructureSuspension
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR SHOP TO HAVE THE CATALYTIC CONVERTER REPLACED. THE MECHANIC STATED THAT THE FRAME AND FRONT SUSPENSION LINE AND FITTINGS WERE SEVERELY CORRODED. THE DEALER WAS CONTACTED AND ADVISED THAT THERE WERE NO RELATED RECALLS FOR HIS VIN. THE MA…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR SHOP TO HAVE THE CATALYTIC CONVERTER REPLACED. THE MECHANIC STATED THAT THE FRAME AND FRONT SUSPENSION LINE AND FITTINGS WERE SEVERELY CORRODED. THE DEALER WAS CONTACTED AND ADVISED THAT THERE WERE NO RELATED RECALLS FOR HIS VIN. THE MANUFACTURER WAS NOT NOTIFIED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 99,000 AND THE CURRENT MILEAGE WAS 102,000.
NHTSA ODI #10330173
126,544 miles · Apr 29, 2010
Fuel System, Gasoline
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING AT SPEEDS OF 15 MPH IN SNOWY WEATHER, THE GAS TANK STRAPS RUSTED AND BROKE CAUSING THE FUEL TANK TO FRACTURE FROM THE VEHICLE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC FOR REPAIRS. THE DEALER WAS CONTACTED AND ADVISED REPAIRS TO THE FUEL STRAPS WOULD BE…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING AT SPEEDS OF 15 MPH IN SNOWY WEATHER, THE GAS TANK STRAPS RUSTED AND BROKE CAUSING THE FUEL TANK TO FRACTURE FROM THE VEHICLE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC FOR REPAIRS. THE DEALER WAS CONTACTED AND ADVISED REPAIRS TO THE FUEL STRAPS WOULD BE OUTSIDE OF FACTORY WARRANTY AND REPAIRS WOULD BE AT THE OWNERS EXPENSE. THE MANUFACTURER DID NOT PROVIDE ANY ASSISTANCE. THE FAILURE AND CURRENT MILEAGES WERE 126, 544.
NHTSA ODI #10328037
50,000 miles · Apr 26, 2010
Service Brakes, Hydraulic
DISCOVERED A LOW PEDAL CONDITION WHILE DRIVING ON 695 , INSPECTED AND FOUND RUSTED OUT BRAKE LINES AND FITTINGS HAVE CAUSED BRAKING MALFUNCTIONS IN MY 2000 SILVERADO THE VEHICLE HAS 50,000 MILES ON IT . THIS IS THE SECOND OCCURRENCE! THE DEALER REPAIRED FIRST PROBLEM @400.00 SECOND PROBLEM IS STILL PENDING. *TR
NHTSA ODI #10327629
90,000 miles · Apr 26, 2010
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING BETWEEN 25 AND 30 MPH, THE CONTACT STATED THAT BRAKE LINE FAILED WHEN HE ATTEMPTED TO ENGAGE THE BRAKE PEDAL TO AVOID HITTING A VEHICLE IN FRONT OF HIM. THE CONTACT WAS FORCED TO USE THE EMERGENCY BRAKE TO STOP THE VEHICLE AND COASTED ONTO THE EMERGENCY LANE. THE…
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TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHILE DRIVING BETWEEN 25 AND 30 MPH, THE CONTACT STATED THAT BRAKE LINE FAILED WHEN HE ATTEMPTED TO ENGAGE THE BRAKE PEDAL TO AVOID HITTING A VEHICLE IN FRONT OF HIM. THE CONTACT WAS FORCED TO USE THE EMERGENCY BRAKE TO STOP THE VEHICLE AND COASTED ONTO THE EMERGENCY LANE. THE CONTACT NOTICED THAT THE BRAKE FLUID WAS LEAKING. THE VEHICLE WAS TOWED TO A LOCAL REPAIR SHOP WHERE THE MECHANIC REPAIRED 48 FEET OF THE BRAKE TUBING. THE FAILURE MILEAGE WAS APPROXIMATELY 90,000. THE CURRENT MILEAGE WAS APPROXIMATELY 105,000.
NHTSA ODI #10327604
125,000 miles · Apr 24, 2010
Service Brakes, Hydraulic
THE BRAKE LINES ON MY 2000 CHEVY SILVERADO RUSTED OUT AND HAD TO BE REPLACED. THE GAS LINE WAS ALSO RUSTED OUT. *TR
NHTSA ODI #10327295
45,000 miles · Apr 19, 2010
Service Brakes, Hydraulic
ONE OWNER 2000 SILVERADO 1500 LT, WHILE PULLING LIGHT MOTORCYCLE TRAILER GOING DOWNHILL - BRAKE PEDAL WENT TO FLOOR. NO BRAKES WHATSOEVER. DRIVER WAS LUCKY ENOUGH TO HAVE ROOM TO GRADUALLY STOP. BRAKE LINES RUSTED THROUGH - FLUID STREAMING OUT. GM AND DEALER FINALLY REPLACED "DEFECTIVE LINES" (VEHICLE HAD LESS THAN 50K MILES…
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ONE OWNER 2000 SILVERADO 1500 LT, WHILE PULLING LIGHT MOTORCYCLE TRAILER GOING DOWNHILL - BRAKE PEDAL WENT TO FLOOR. NO BRAKES WHATSOEVER. DRIVER WAS LUCKY ENOUGH TO HAVE ROOM TO GRADUALLY STOP. BRAKE LINES RUSTED THROUGH - FLUID STREAMING OUT. GM AND DEALER FINALLY REPLACED "DEFECTIVE LINES" (VEHICLE HAD LESS THAN 50K MILES). 1 YEAR LATER, REMAINING LINES RUSTED OUT AND FAILED. OWNER REPLACED AT OWN COST AND FINALLY SOLD TRUCK. GM FAILED TO RECOGNIZE SYMPTOMS OF ISSUE ALL ALONG AND PROVIDED LESS THAN ACCEPTABLE SUPPORT. *TR
NHTSA ODI #10326313
155,000 miles · Apr 18, 2010
Service Brakes, Hydraulic
I HAVE A 2000 CHEVY SILVERADO 1500 LT, WHICH I PURCHASED FROM MY SON ON OCT 17, 2009. PRIOR TO THAT MY SON EXPERIENCED THE RIGHT FRONT BAKE LINE BURST IN JUNE OF 2009, WHICH HE HAD REPLACED. I HAD THE BRAKE LINES CHECKED AT THE CHEVY DEALER WHO ADVISED ME TO REPLACE ALL THE LINES. CHEVY DOES NOT OFFER PRE-MADE BRAKE LINES, M…
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I HAVE A 2000 CHEVY SILVERADO 1500 LT, WHICH I PURCHASED FROM MY SON ON OCT 17, 2009. PRIOR TO THAT MY SON EXPERIENCED THE RIGHT FRONT BAKE LINE BURST IN JUNE OF 2009, WHICH HE HAD REPLACED. I HAD THE BRAKE LINES CHECKED AT THE CHEVY DEALER WHO ADVISED ME TO REPLACE ALL THE LINES. CHEVY DOES NOT OFFER PRE-MADE BRAKE LINES, MEANING THEY HAVE TO BE MADE UP INDIVIDUALLY, AT A HUGE EXPENSE. ACCORDING TO OFFICE OF DEFECTS INVESTIGATION THERE ARE 110 OWNER COMPLAINTS SUCH AS MINE. THE COMPLAINTS ALLEGE THE LOSS OF BRAKING EFFECTIVENESS DUE TO BRAKE LINE RUPTURE BECAUSE OF CORROSION. IN 37 OF THESE COMPLAINTS THE BRAKE LINE FAILURE WAS CONFIRMED BY A DEALER INSPECTION. THREE COMPLAINTS ALLEGE THAT CORRODED BRAKE LINE FAILURE RESULTED IN A CRASH. MY WIFE AND I ARE RETIRED AND TRYING TO ENJOY OUR LASTING YEARS AND HOPEFULLY GM WILL RESOLVE THIS ISSUE. OUR LIVES ARE WORTH MORE THAN BRAKE LINES. *TR
NHTSA ODI #10326234
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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