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
What owners actually said
509 reports
60,000 miles · Mar 23, 2015
Service Brakes
MY CHEVROLET SILVERADO PICKUP (1500 4X4) HAS EXPERIENCED THREE MAJOR BRAKE FAILURES. THE FIRST FAILURE WAS WHILE DRIVING AND APPROACHING A STOP SIGN. WHEN I ATTEMPTED TO BRAKE, MY FOOT WENT TO THE FLOOR. AFTER PUMPING A FEW TIMES, THE TRUCK SLOWED BUT WITH LITTLE STOPPING POWER. THE VEHICLE WAS IMMEDIATELY TOWED AND BRAKE FL…
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MY CHEVROLET SILVERADO PICKUP (1500 4X4) HAS EXPERIENCED THREE MAJOR BRAKE FAILURES. THE FIRST FAILURE WAS WHILE DRIVING AND APPROACHING A STOP SIGN. WHEN I ATTEMPTED TO BRAKE, MY FOOT WENT TO THE FLOOR. AFTER PUMPING A FEW TIMES, THE TRUCK SLOWED BUT WITH LITTLE STOPPING POWER. THE VEHICLE WAS IMMEDIATELY TOWED AND BRAKE FLUID WAS ACTIVELY DRIPPING FROM THE LINES. THE SECOND FAILURE WAS ABOUT A YEAR LATER WHILE DRIVING AT LOW SPEEDS (<5 MPH) WHILE PARKING. AGAIN, MY FOOT WENT TO THE FLOOR BEFORE THE ABS SYSTEM ACTIVATED (COMPLETELY DRY CONDITIONS) WITH ESSENTIALLY NO STOPPING POWER (ABS ACTIVATION BUT NO BRAKING POWER). THIS RESULTED IN AN ACCIDENT AS THE TRUCK DID NOT HAVE ENOUGH ROOM TO EFFECTIVELY STOP (THANK GOODNESS THE CAR IN THE PARKING SPACE IN FRONT OF MY WAS UNOCCUPIED). AFTER BEING REPAIRED BY THE DEALER (TWICE), THE PROBLEM JUST OCCURRED AGAIN (APPROX. 2 YEARS LATER). *TR
NHTSA ODI #10701268
115,000 miles · Mar 19, 2015
Service Brakes
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS AND DEPRESSING THE BRAKE PEDAL, THE ABS SYSTEM ENGAGED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE FRONT PASSENGER SPEED SENSOR ERRATIC NEEDED TO BE REPLACED. THE VEHICLE W…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS AND DEPRESSING THE BRAKE PEDAL, THE ABS SYSTEM ENGAGED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE FRONT PASSENGER SPEED SENSOR ERRATIC NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 115,000.
NHTSA ODI #10695319
112,325 miles · Mar 11, 2015
Service Brakes
WENT TO STOP FOR A RED LIGHT. BRAKE PEDAL WENT RIGHT TO THE FLOOR. HAD TO SWERVE NOT TO HIT THE CAR IN FRONT OF ME AND SWERVE AGAIN NOT TO KILL THE GUY WALKING ON THE SHOULDER OF THE ROAD. THIS IS UNACCEPTABLE I HAVE DRIVEN LOTS OF CAR INTO THE GROUND NEVER HAS THIS EVEN BEEN A THOUGHT. ALL BRAKE LINES NEEDED TO BE REPLACED 1100…
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WENT TO STOP FOR A RED LIGHT. BRAKE PEDAL WENT RIGHT TO THE FLOOR. HAD TO SWERVE NOT TO HIT THE CAR IN FRONT OF ME AND SWERVE AGAIN NOT TO KILL THE GUY WALKING ON THE SHOULDER OF THE ROAD. THIS IS UNACCEPTABLE I HAVE DRIVEN LOTS OF CAR INTO THE GROUND NEVER HAS THIS EVEN BEEN A THOUGHT. ALL BRAKE LINES NEEDED TO BE REPLACED 1100 DOLLARS LATER! *TR
NHTSA ODI #10693632
76,500 miles · Mar 5, 2015
Service Brakes
I WAS TRAVELING AT APPROXIMATELY 5 MPH APPROACHING AN INTERSECTION AND APPLIED MY BRAKES. I COULD FEEL THE ABS SYSTEM FUNCTIONING AS I WAS ON A SNOW-COVERED ROAD. AFTER ABOUT 1-2 SECONDS OF ABS ACTIVATION, THE BRAKE PEDAL LOST ALL PRESSURE AND CONTINUED TO THE FLOORBOARD. I WAS ABLE TO COAST TO A STOP AND COULD SEE THE BRAK…
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I WAS TRAVELING AT APPROXIMATELY 5 MPH APPROACHING AN INTERSECTION AND APPLIED MY BRAKES. I COULD FEEL THE ABS SYSTEM FUNCTIONING AS I WAS ON A SNOW-COVERED ROAD. AFTER ABOUT 1-2 SECONDS OF ABS ACTIVATION, THE BRAKE PEDAL LOST ALL PRESSURE AND CONTINUED TO THE FLOORBOARD. I WAS ABLE TO COAST TO A STOP AND COULD SEE THE BRAKE LINE LOCATED ON THE DRIVER SIDE UNDER THE DRIVER SEAT, SQUIRTING BRAKE FLUID ONTO THE GROUND EACH TIME I ENGAGED THE BRAKE. *TR
NHTSA ODI #10692376
150,000 miles · Mar 2, 2015
Service Brakes
BRAKE LINE UNDER DRIVER SIDE FRAME ARE COMPLETELY CORRODED AND ONE RUPTURED AND MY BRAKES TO FAIL ABOUT 90 % COULD BARELY COME TO A STOP. *TR
NHTSA ODI #10691407
123,541 miles · Feb 5, 2015
Service Brakes
WHILE DRIVING DOWNHILL AT O'HARE AIRPORT TERMINAL 5 I WENT TO STOP FOR THE LIGHT AND THERE WAS A BRIEF SECOND WHERE THE BRAKES ACTED NORMALLY AND THEN THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR. I HAD MAYBE 10% BRAKING POWER. I HAD TO DRIVE ON THE SIDE OF THE ROAD AND THROUGH THE RED LIGHT TO AVOID HITTING ANOTHER VEHICLE. I…
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WHILE DRIVING DOWNHILL AT O'HARE AIRPORT TERMINAL 5 I WENT TO STOP FOR THE LIGHT AND THERE WAS A BRIEF SECOND WHERE THE BRAKES ACTED NORMALLY AND THEN THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR. I HAD MAYBE 10% BRAKING POWER. I HAD TO DRIVE ON THE SIDE OF THE ROAD AND THROUGH THE RED LIGHT TO AVOID HITTING ANOTHER VEHICLE. I BROUGHT THE CAR TO MY MECHANIC WHO SAID THE BRAKE LINE ABOVE THE GAS TANK RUSTED RIGHT THROUGH. *TR
NHTSA ODI #10681567
Mileage unknown · Jan 27, 2015
Electrical SystemEngine
MY CAR IS OLD BUT IT HAS BEEN RUNNING FINE, AND I KEEP UP WITH REGULAR MAINTENANCE AND OIL CHANGE APPOINTMENTS. I CAME OUT OF WALMART AFTER BUYING GROCERIES AND WHEN I TRIED TO START THE CAR IT SOUNDED LIKE IT WAS TRYING TO TURN OVER, BUT IT WOULDN'T ACTUALLY START. AFTER 30 MINUTES OF SITTING IN THE CAR TRYING TO GET IT TO STAR…
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MY CAR IS OLD BUT IT HAS BEEN RUNNING FINE, AND I KEEP UP WITH REGULAR MAINTENANCE AND OIL CHANGE APPOINTMENTS. I CAME OUT OF WALMART AFTER BUYING GROCERIES AND WHEN I TRIED TO START THE CAR IT SOUNDED LIKE IT WAS TRYING TO TURN OVER, BUT IT WOULDN'T ACTUALLY START. AFTER 30 MINUTES OF SITTING IN THE CAR TRYING TO GET IT TO START IT FINALLY STARTED. I TOOK THE CAR TO MY REGULAR MECHANIC AND THEY COULD NOT FIND ANYTHING WRONG WITH IT. THEY CLEANED THE BATTERY CABLES IN HOPES OF RELIEVING THE PROBLEM. NOW A WEEK LATER IT DID IT AGAIN 2 TIMES IN THE SAME DAY. *TR
NHTSA ODI #10679072
126,000 miles · Dec 29, 2014
Service Brakes
DROVE TO MILAN, MI FROM YPSILANTI, MI. TO LOOK IN ON SISTER IN LAW WHO IS INCAPACITATED DUE TO BROKEN FEMUR FROM FALL. BRAKES FELT MUSHY AS I SLOWED TO ENTER HER DRIVEWAY. AFTER ENTERING THE DRIVEWAY AT LOW SPEED I APPLIED BRAKES AND PEDAL WENT TO FLOOR. TRIED PUMPING BRAKES WITH NO RESULT. THREW SHIFTER INTO REVERSE TO KEEP…
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DROVE TO MILAN, MI FROM YPSILANTI, MI. TO LOOK IN ON SISTER IN LAW WHO IS INCAPACITATED DUE TO BROKEN FEMUR FROM FALL. BRAKES FELT MUSHY AS I SLOWED TO ENTER HER DRIVEWAY. AFTER ENTERING THE DRIVEWAY AT LOW SPEED I APPLIED BRAKES AND PEDAL WENT TO FLOOR. TRIED PUMPING BRAKES WITH NO RESULT. THREW SHIFTER INTO REVERSE TO KEEP FROM PLOWING INTO SISTER IN LAWS VEHICLE. IF THIS HAD HAPPENED EARLIER ON THE BUSY ROAD LEADING INTO TOWN I WOULD HAVE SURELY HAD AN ACCIDENT. FOUND BRAKE LINES BADLY RUSTED AND BOTH LINES LEAKING THAT RUN FROM MASTER CYLINDER TO ANTILOCK MODULE MOUNTED TO FRAME UNDER DRIVERS AREA. IT IS RIDICULOUS THAT THESE TWO SAFETY SENSITIVE LINES ARE MADE OF UN PROTECTED STEEL AS OPPOSED TO COPPER NICKEL AND ARE RUN OUT OF THE PROTECTED UNDER HOOD AREA TO THE HIGH CORROSION PRONE UNDERBODY TO MEET THE INAPPROPRIATELY PLACED ANTILOCK MODULE. TWO YEARS PRIOR TO MY PURCHASE OF THIS TRUCK GM HEAVILY ADVERTISED THE RUST RESISTANT GALVANIZED PANELS THEY WERE USING IN THEIR TRUCKS. I HAVE SINCE FOUND OUT THAT THEY QUIETLY REMOVED THIS RUST PROTECTION. I HAVE ORDERED NEW BREAK LINES TO TOTALLY REPLACE ALL METAL LINES ON THIS, MY LAST CHEVY TRUCK. I CAN ONLY WONDER HOW MANY FATALITIES HAVE RESULTED FROM THIS OFTEN REFERENCED CONDITION. THE DIFFICULTY WILL BE IN EVER PROVING THE CAUSE AND AFFECT (EFFECT) OF THESE ACCIDENTS SINCE THEY WILL BE SO DEVASTATING IN NATURE, THE DRIVER WILL PROBABLY BE KILLED AND NOT BE ABLE TO TESTIFY ABOUT THE TRUE CAUSE AND ALMOST ALL GM TRUCKS OF THIS VINTAGE (ESPECIALLY IN THE RUST BELT STATES) WILL HAVE BREAK LINES SO RUSTED THAT THEY WILL CRUMBLE IN ALMOST ANY ACCIDENT. MY EXPERIENCE SHOWS THAT THE UNFORTUNATE DRIVER WON'T ALWAYS HAVE "SOME" BRAKING ABILITY LEFT ON A LINE FAILURE. *TR
NHTSA ODI #10668886
101,630 miles · Dec 13, 2014
Service Brakes
BRAKES STARTED TO SLIP WHEN APPLIED, TAKEN TO SHOP REPORTED THAT ALL BRAKE LINES NEED TO BE REPLACED DUE TO RUST. *TR
NHTSA ODI #10664122
162,000 miles · Dec 9, 2014
Service Brakes
THE EMERGENCY BRAKE FAILS TO WORK, IT HAS HAD THE PADS REPLACED 3 TIMES. THE EMERGENCY BRAKE CONTINUES TO NOT WORK PROPERLY. *TR
NHTSA ODI #10663177
Official recalls
0
No 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
2
EA04011 · 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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