IllustrationBRAKE PEDAL WENT TO FLOOR DUE TO PREMATURE BRAKE LINE FAILURE. WAS ABLE TO DOWN SHIFT AND CURB THE VEHICLE TO STOP IN TIME. *TR
1999 GMC Sierra 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1999 GMC Sierra 1500 do not stand out strongly from the model-year median of 181.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra 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
70–25K
1225–50K
2050–75K
2175–100K
33100–150K
37150K+
130 reports with mileage · 28 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, Hydraulic. Review the 70 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Seats. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
9 crash reports0 fire reports2 injury reports
What owners actually said
158 reportsAFTER LETTING MY SON EXIT ON THE DRIVERS SIDE, TRIED TO RETURN SEAT TO NORMAL POSITION AND COULD NOT. AFTER STRUGGLING WITH IT, A PLASTIC PART IN THE SEAT TRACK BROKE AND THEN SEAT WOULD NOT STAY IN PLACE AT ALL. CAREFULLY DROVE TO NEAREST GM DEALERSHIP AND WAS TOLD PART WAS NOT IN STOCK, WOULD TAKE UP TO A WEEK AND WAS VERY EXP…
Read full complaint
AFTER LETTING MY SON EXIT ON THE DRIVERS SIDE, TRIED TO RETURN SEAT TO NORMAL POSITION AND COULD NOT. AFTER STRUGGLING WITH IT, A PLASTIC PART IN THE SEAT TRACK BROKE AND THEN SEAT WOULD NOT STAY IN PLACE AT ALL. CAREFULLY DROVE TO NEAREST GM DEALERSHIP AND WAS TOLD PART WAS NOT IN STOCK, WOULD TAKE UP TO A WEEK AND WAS VERY EXPENSIVE. I WAS ON VACATION, SO COULD NOT WAIT, TRIED SALVAGE YARDS, NO LUCK. HAD UPHOLSTERY SHOP DRIVE LARGE SCREW INTO TRACK TO LOCK IT IN PLACE AND HAVE NOT BEEN ABLE TO LOCATE A PART. *TR
I WAS IN A DRIVEWAY AND ATTEMPTED TO STOP TO TURN ONTO THE MAIN ROAD, WHEN I PRESSED THE BRAKES THEY WENT TO THE FLOOR. I USED THE PARK BRAKE TO STOP AND RETURNED HOME. I FOUND THE LEAK, IT IS ON THE BRAKE LINE WHERE A GROUP OF FOUR LINES RUN ALONG THE FRAME UNDER THE DRIVERS SEAT. *TR
TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, HE HEARD AN ABNORMAL NOISE IN THE DRIVE SHAFT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSIS WHERE THE CONTACT WAS INFORMED THAT THE FUEL TANK STRAPS WERE FRACTURED. BOTH STRAPS WERE REPLACED. THE DEALER AND MANUFACTURER …
Read full complaint
TL* THE CONTACT OWNS A 1999 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, HE HEARD AN ABNORMAL NOISE IN THE DRIVE SHAFT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSIS WHERE THE CONTACT WAS INFORMED THAT THE FUEL TANK STRAPS WERE FRACTURED. BOTH STRAPS WERE REPLACED. THE DEALER AND MANUFACTURER WERE NOTIFIED BUT OFFERED NO ASSISTANCE. THE FAILURE AND CURRENT MILEAGE WAS 101,000. UPDATED 1/17/13 *CN THE CONSUMER STATED THE REAR FUEL STRAP HAD BROKEN AND WAS RUBBING AGAINST THE DRIVE SHAFT. THE FRONT STRAP WAS RUSTED, BUT NOT BROKEN. BOTH WERE REPLACED AT HIS EXPENSE. UPDATED 01/24/13
EXCESSIVE RUST BUILD UP ON BRAKE ROTORS AND CALIPERS. ROTORS & PADS PREVIOUSLY REPLACED IN MAR., 2007 AFTER DRIVING 40,000 MILES. NEEDED REPLACEMENT AGAIN IN OCT., 2009 AFTER ONLY DRIVING 14,000 ADDITIONAL MILES. INSTRUMENT CLUSTER FAILED AND WAS REPLACED IN JUNE, 2011 AT 58,000 MILES. DEALER ADVISED NO RECALL ON THIS MODE…
Read full complaint
EXCESSIVE RUST BUILD UP ON BRAKE ROTORS AND CALIPERS. ROTORS & PADS PREVIOUSLY REPLACED IN MAR., 2007 AFTER DRIVING 40,000 MILES. NEEDED REPLACEMENT AGAIN IN OCT., 2009 AFTER ONLY DRIVING 14,000 ADDITIONAL MILES. INSTRUMENT CLUSTER FAILED AND WAS REPLACED IN JUNE, 2011 AT 58,000 MILES. DEALER ADVISED NO RECALL ON THIS MODEL, ALTHOUGH IDENTICAL INSTRUMENT CLUSTERS FOR NEWER VEHICLES HAD BEEN RECALLED AND WERE BEING REPLACED AT NO CHARGE. *TR
PUT VEHICLE IN GEAR , NO BRAKE PEDAL .... BRAKE LINES WERE RUSTED AND FAILED......... HAD ALL 5 LINES REPLACED......... *TR
I WAS COMING UPON A RED LIGHT BEHIND OTHER TRAFFIC. I STEPPED DOWN ON THE BRAKES TO STOP, AND THE PEDDLE FELT SPONGY. I TRIED PUMPING THEM, THEN NOTHING. I AVOIDED HITTING THE TRUCK IN FRONT OF ME BY SWERVING ACROSS INTO THE OTHER LANE AND PULLING INTO A PARKING LOT, WERE I WAS ABLE TO BRING THE VEHICLE TO A STOP. THE BRAKE WA…
Read full complaint
I WAS COMING UPON A RED LIGHT BEHIND OTHER TRAFFIC. I STEPPED DOWN ON THE BRAKES TO STOP, AND THE PEDDLE FELT SPONGY. I TRIED PUMPING THEM, THEN NOTHING. I AVOIDED HITTING THE TRUCK IN FRONT OF ME BY SWERVING ACROSS INTO THE OTHER LANE AND PULLING INTO A PARKING LOT, WERE I WAS ABLE TO BRING THE VEHICLE TO A STOP. THE BRAKE WARNING LIGHT NEVER CAME ON, AND I DON'T UNDERSTAND WHILE IT WAS A TOTAL BRAKE FAILURE, I THOUGHT THAT'S WHY THERE IS A DUAL RESERVOIR, AND THERE WAS STILL PLENTY OF FLUID IN BOTH. UPON INSPECTION, I SAW THE BRAKE LINES WERE ALL SEVERELY CORRODED, AND THE ONE GOING TO THE REAR BRAKES WAS SPLIT. I KNOW I LIVE IN MICHIGAN, AND THE TRUCK IS RUSTY(THANKS AGAIN GM) BUT I HAVE CARS OVER 40 YEARS OLD WITH ORIGINAL LINES ON THEM WITH ABSOLUTELY NO CORROSION ON THEM. THIS IS A SUBSTANDARD PART, THAT NEEDS TO BE RECALLED BEFORE MORE PEOPLE ARE INJURED OR KILLED. *TR
POWER STEERING SUDDENLY GOES INTO MAX ASSIST WHEN MAKING GRADUAL TURNS CAUSING THE STEERING WHEEL TO JERK OUT OF YOUR HANDS AND ALMOST CAUSING AN ACCIDENT. VEHICLE SWERVED ALL OVER THE FREEWAY UNTIL IT COULD BE STOPPED. APPARENTLY GM IS AWARE OF THE PROBLEM SINCE THEY MAKE A BYPASS KIT (P/N 19168825) TO ELIMINATE THE FAULTY ACTU…
Read full complaint
POWER STEERING SUDDENLY GOES INTO MAX ASSIST WHEN MAKING GRADUAL TURNS CAUSING THE STEERING WHEEL TO JERK OUT OF YOUR HANDS AND ALMOST CAUSING AN ACCIDENT. VEHICLE SWERVED ALL OVER THE FREEWAY UNTIL IT COULD BE STOPPED. APPARENTLY GM IS AWARE OF THE PROBLEM SINCE THEY MAKE A BYPASS KIT (P/N 19168825) TO ELIMINATE THE FAULTY ACTUATOR MOUNTED ON THE POWER STEERING PUMP BUT THEY WILL NOT ISSUE A RECALL EVEN THOUGH THIS IS AN EXTREME SAFETY HAZARD. GM EXPECTS YOU TO BUY A $70 KIT TO REMEDY THE PROBLEM. THIS HAS BEEN AN ONGOING RANDOM INTERMITTENT PROBLEM WITH MY SUBURBAN FOR THE LAST 8-9 YRS. *TR *JS
AS I WAS APPROACHING A STOPLIGHT, MY BRAKE PEDAL WENT TO THE FLOOR. I LIMPED IT AROUND THE CORNER AND FOUND A HOLE IN A HARD BRAKE LINE. I HAD IT REPAIRED BY A CERTIFIED MECHANIC. NOW A SECOND RUPTURE HAS OCCURRED. THIS SEEMS TO BE A RESULT OF CORROSION. *TR
STOPPED IN MY DRIVEWAY TO GET NEWSPAPER AND MAIL. I GOT BACK INTO THE TRUCK AND APPLIED THE BRAKE TO SHIFT INTO DRIVE. THE BRAKE PEDAL WENT TO THE FLOOR. I COASTED UP THE DRIVEWAY AND WAS ABLE TO STOP. WHEN I GOT OUT OF THE TRUCK THERE WAS A TRAIL OF BRAKE FLUID. THE LEAK WAS COMING FROM UNDER THE DRIVER'S SEAT AREA, WHERE THE B…
Read full complaint
STOPPED IN MY DRIVEWAY TO GET NEWSPAPER AND MAIL. I GOT BACK INTO THE TRUCK AND APPLIED THE BRAKE TO SHIFT INTO DRIVE. THE BRAKE PEDAL WENT TO THE FLOOR. I COASTED UP THE DRIVEWAY AND WAS ABLE TO STOP. WHEN I GOT OUT OF THE TRUCK THERE WAS A TRAIL OF BRAKE FLUID. THE LEAK WAS COMING FROM UNDER THE DRIVER'S SEAT AREA, WHERE THE BRAKE LINE ATTACHED TO THE ABS PUMP. MY MECHANIC HAD TO REPLACE ALL OF THE BRAKE LINES. *JB
Official recalls
100V122000 · Seat Belts:front:webbing
Apr 27, 2000
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. THESE VEHICLES DO NOT COMPLY WITH THE OCCUPANT PROTECTION REQUIREMENTS OF FMVSS NO. 208, "OCCUPANT CRASH PROTECTION."
Consequence & remedy
Consequence: IN THE EVENT OF A VEHICLE CRASH, THE RIGHT FRONT PASSENGER RESTRAINT SYSTEMS MAY NOT MEET THE NECK EXTENSION REQUIREMENTS.
Remedy: DEALERS WILL INSTALL A TRAY INSERT ON THE TOP OF THE PASSENGER SIDE OF THE INSTRUMENT PANEL. THE TRAY INSERT CORRECTS THE NONCOMPLIANCE.
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.