IllustrationFUEL AND BREAK LINES COMPLETELY RUSTED OUT. FUEL LINE BROKE WHILE REPLACING FUEL FILTER. NECESSITATED REPLACEMENT OF ENTIRE FUEL LINE SYSTEM. BREAK LINE BROKE WHILE DRIVING AROUND SAME TIME LOSING ALL BREAKING FUNCTIONS. NEEDED TO TURN OFF ROAD AND KILL MOTOR TO STOP. ALL BREAK LINES NEED REPLACEMENT. I SPENT $2500 FIXING.
2002 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2002 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 1500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
340–25K
4925–50K
7950–75K
10275–100K
124100–150K
55150K+
443 reports with mileage · 66 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes. Review the 184 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes, Hydraulic. Review the 164 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
45 crash reports5 fire reports15 injury reports
Service Brakes complaints
184 reportsI WAS PULLING MY 2000 LB BOAT TO THE LAKE SAT. WITH MY 2002 SILVERADO 1500 . I MADE IT TO THE LAUNCH RAMP OK BUT WHEN I WENT TO LAUNCH THE BOAT I COULDN'T STOP ROLLING DOWN THE RAMP [ NO BRAKES) I WAS ONLY ABLE TO SAVE THE TRUCK FROM BECOMING A SUBMARINE BY THROWING IT IN DRIVE AND HITTING THE GAS. I DROVE INTO THE PARKING LOT T…
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I WAS PULLING MY 2000 LB BOAT TO THE LAKE SAT. WITH MY 2002 SILVERADO 1500 . I MADE IT TO THE LAUNCH RAMP OK BUT WHEN I WENT TO LAUNCH THE BOAT I COULDN'T STOP ROLLING DOWN THE RAMP [ NO BRAKES) I WAS ONLY ABLE TO SAVE THE TRUCK FROM BECOMING A SUBMARINE BY THROWING IT IN DRIVE AND HITTING THE GAS. I DROVE INTO THE PARKING LOT TO FIND THE BRAKE LINE RUSTED OUT . HAD THIS HAPPENED AT HIGHWAY SPEEDS IT WOULD HAVE BEEN CATASTROPHIC . I READ ONLINE ABOUT THE ISSUES WITH THE LINES AND THE FACT THERE WAS A BACKUP. TRUST ME WHEN I SAY WHILE PULLING A BOAT IT WOULD HAVE NEVER STOPPED ME. I'VE HAD CARS LONGER THIS IN MY 40+ YEARS OF DRIVING ANY NEVER HAD A BRAKE LINE FAIL FROM RUST. I WOULD HAVE LIKED A HEADS UP ON THIS ISSUE AS I'VE SEEN IT TO BE A PROBLEM IN MULTIPLE YEARS. NEEDLESS TO SAY I'M DISAPPOINTED AGAIN BY GM BY NOT AT LEAST GIVING THE OWNERS A HEADS UP. AND I'M THANKING GOD FOR MY WIFE AND I NOT BEING INJURED ON A SIMPLE FISHING TRIP. SHAME ON YOU GUYS. IF IT WASN'T AN ISSUE YOU WOULDN'T HAVE CHANGED THE LINES ON LATER MODEL CARS. JUST ONE MORE PUSH TO MAKE ME LOOK AT OTHER VEHICLE MANUFACTURERS. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
BRAKE LINES AND FUEL LINES ARE VERY RUSTED ALSO THE DRIVE SHAFT AND ABS BRACKET 2 BRAKE LINES HAVE RUSTED THROUGH WHILE DRIVING THE TRUCK HAS ONLY ABOUT 100,000 MILES IT IS VERY DANGEROUS
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE ATTEMPTING TO ENGAGE THE BRAKES, THE BRAKE PEDAL SANK TO THE FLOORBOARD. AFTER INSPECTING THE VEHICLE, THE CONTACT NOTICED THAT THE BRAKE LINES FRACTURED DUE TO CORROSION AND CAUSED THE BRAKE FLUID TO LEAK. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WA…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. WHILE ATTEMPTING TO ENGAGE THE BRAKES, THE BRAKE PEDAL SANK TO THE FLOORBOARD. AFTER INSPECTING THE VEHICLE, THE CONTACT NOTICED THAT THE BRAKE LINES FRACTURED DUE TO CORROSION AND CAUSED THE BRAKE FLUID TO LEAK. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 156,412. UPDATED 10/06/16*LJ *TR
I WAS DRIVING ON THE HIGHWAY AND HAD TO STOP, THE BRAKE PEDAL GOES TO THE FLOOR WITH HARDLY ANY BRAKES.I HAD TO GO ON THE RIGHT SIDE OF THE ROAD TO AVOID MAJOR CRASH . WAS VERY SHOCKED AND HEART WAS RACING . I NEVER HAD THAT HAPPEN BEFORE IN ALL THE YEARS I HAVE BEEN DRIVING. I MANAGED TO MAKE IT HOME BY USING LOWER GEARS AND …
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I WAS DRIVING ON THE HIGHWAY AND HAD TO STOP, THE BRAKE PEDAL GOES TO THE FLOOR WITH HARDLY ANY BRAKES.I HAD TO GO ON THE RIGHT SIDE OF THE ROAD TO AVOID MAJOR CRASH . WAS VERY SHOCKED AND HEART WAS RACING . I NEVER HAD THAT HAPPEN BEFORE IN ALL THE YEARS I HAVE BEEN DRIVING. I MANAGED TO MAKE IT HOME BY USING LOWER GEARS AND EMERGENCY BRAKE TO STOP. WHEN I FINALLY GOT HOME I LOOKED TO SEE WHAT THE HECK WAS GOING ON AND SAW THAT MY BRAKE LINES HAD CORRODED THRU AND THE FLUID WAS COMING OUT. I WENT ON LINE TO SEE IF THERE WAS ANY OTHERS WITH THIS PROBLEM AND SAW THERE WERE MANY, MANY COMPLAINTS ABOUT THIS ISSUE. I CALLED SEVERAL PLACES AND THE COST TO REPLACE ALL MY BRAKE LINES WAS AROUND 1200 - 1700. I ENDED UP GETTING THEM REPLACED FOR $1600. THIS SHOULD NOT HAPPEN. I HAVE OWED MANY VEHICHLES OVER THE YEARS IN THIS SAME AREA AND HAVE NEVER EVER HAD TO REPLACE A BRAKE LINE. I THINK THIS SHOULD BE A MAJOR RECALL BEFORE ANYONE DIES. THERE MUST BE FAULTY METAL BEING USED IN THESE AND NEEDS TO BE STAINLESS STEEL. I WOULD LIKE TO BE REIMBURSED FOR THE $1600 I HAD TO SPEND ON THESE FAULTY BRAKE LINES. THEY NEED TO DO A RECALL OR LET PEOPLE KNOW ABOUT THIS PROBLEM AND REIMBURSE THEM FOR THE REPAIRS.
BRAKE LINE ARE RUSTING AND FAILING. I WAS DRIVING IN THE CITY AND THE PEDAL WENT TO THE FLOOR WHEN I APPLIED THE BRAKES. THIS IS THE SECOND LINE TO FAIL FROM RUST AND THE OTHER 3 LOOK VERY RUSTY.
THE FUEL LINES RUST AWAY AND START LEAKING FUEL BADLY. ALL LINES HAVE TO BE REPLACED. THE RUST ON THIS TRUCK IS UNBELIEVABLE. GM WILL NOT STAND BEHIND THE PRODUCT. THE ROCKER PANELS ALL RUSTED OUT AS WELL. THE FRAME IS RUSTING OUT. THESE TRUCK ARE JUST RUST BUCKETS
1ST INCIDENT - VEHICLE IN MOTION AT LOW SPEED, ANTI-LOCK BRAKES ACTIVATE AND PREVENT VEHICLE FROM STOPPING, RAN INTO GARAGE DOOR 2ND INCIDENT - AFTER 1ST INCIDENT, CAR SHOP REPLACED ABS MODULE. SAME SITUATION. VEHICLE IN MOTION AT LOW SPEED, ANTI-LOCK BRAKES ACTIVATE AND PREVENT VEHICLE FROM STOPPING, RAN INTO CAR IN PARKING …
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1ST INCIDENT - VEHICLE IN MOTION AT LOW SPEED, ANTI-LOCK BRAKES ACTIVATE AND PREVENT VEHICLE FROM STOPPING, RAN INTO GARAGE DOOR 2ND INCIDENT - AFTER 1ST INCIDENT, CAR SHOP REPLACED ABS MODULE. SAME SITUATION. VEHICLE IN MOTION AT LOW SPEED, ANTI-LOCK BRAKES ACTIVATE AND PREVENT VEHICLE FROM STOPPING, RAN INTO CAR IN PARKING LOT.
ONE OF THE REAR BRAKES STOPPED WORKING WHILE DRIVING.
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING AT 2 MPH, THE LOW SPEED ABS ENGAGEMENT INCREASED THE STOPPING DISTANCE AND THE CONTACT COULD NOT STOP THE VEHICLE. THE CONTACT ALMOST CRASHED INTO THE GARAGE DOOR BUT WAS ABLE TO STOP THE VEHICLE BEFORE A CRASH OCCURRED. THE CONTACT RELEA…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING AT 2 MPH, THE LOW SPEED ABS ENGAGEMENT INCREASED THE STOPPING DISTANCE AND THE CONTACT COULD NOT STOP THE VEHICLE. THE CONTACT ALMOST CRASHED INTO THE GARAGE DOOR BUT WAS ABLE TO STOP THE VEHICLE BEFORE A CRASH OCCURRED. THE CONTACT RELEASED THE BRAKE PEDAL AND RE-APPLIED PRESSURE TO THE PEDAL IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 75,652. UPDATED 07/12/16*LJ
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
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.