Illustration1999 GMC K1500 TRUCK. CONSUMER STATES PROBLEMS WITH THE BRAKES *TGW THE CONSUMER STATED HE HAS SPENT OVER $2,157.81 IN BRAKE REPAIRS. THE BRAKE LINES, RIGHT REAR CALIPER AND REAR DISC BRAKE ROTOR HAD TO BE REPLACED. *JB
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
Service Brakes, Hydraulic complaints
70 reportsBRAKE LINE BLEW OUT CORRODED. HAD TO REPLACE 5 BRAKE LINES AND 2 FRONT CALIPER DO TO CORROSION. MY BILL AT GM DEALER $957.35 FOR REPAIRS. *TR
1999.5 GMC SIERRA 1500 4WD EXT CAB, SHORTBED. MAY 2005 FRONT BRAKE LINE BURST WHILE APPLYING BRAKES DUE TO SLOWED TRAFFIC ON 65MPH INTERSTATE IN UPSTATE NY. USED SHOULDER TO AVOID HITTING VEHICLES IN FRONT OF ME, HOWEVER REAR BRAKES ONLY ON A 6K POUND PICKUP TRUCK, UNLOADED, DO NOT RESULT IN EFFECTIVE BRAKING. I HAD TO DOW…
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1999.5 GMC SIERRA 1500 4WD EXT CAB, SHORTBED. MAY 2005 FRONT BRAKE LINE BURST WHILE APPLYING BRAKES DUE TO SLOWED TRAFFIC ON 65MPH INTERSTATE IN UPSTATE NY. USED SHOULDER TO AVOID HITTING VEHICLES IN FRONT OF ME, HOWEVER REAR BRAKES ONLY ON A 6K POUND PICKUP TRUCK, UNLOADED, DO NOT RESULT IN EFFECTIVE BRAKING. I HAD TO DOWNSHIFT MY AUTOMATIC TO USE ENGINE BRAKING AS WELL AS THE PARKING BRAKE (WHICH ALSO IS POORLY DESIGNED AND INEFFECTIVE). TRUCK WAS TOWED TO GM DEALER WHERE FRONT BRAKE LINES WERE REPLACED AS ALL WERE RUSTED/ROTTED TO UNSAFE LEVELS, WITH ONE FRACTURING CAUSING THE LOSS OF PRESSURE AND FLUID. APRIL 2009 UPON DOING AN OIL CHANGED, MYSELF, I DISCOVER THE ALL OF THE BRAKE LINES, INCLUDING THE FRONT AS WELL AS THE REAR ARE IN VERY BAD SHAPE DUE TO RUST. AFTER SPEAKING TO MY MECHANIC I HAVE LEARNED THAT THE GM BRAKE LIKE FROM THE LATE 90S TO 2004 WERE NOT PROPERLY DESIGNED TO DEAL WITH THE WEATHER AND RESIST CORROSION. HE SAID AT LEAST ONCE A WEEK HE HAS TO REPLACE SECTIONS OF GM BRAKE LINE FROM THESE TRUCKS AND SUVS. I CANNOT CURRENTLY AFFORD TO REPLACE THESE YET AS ITS A $1700 JOB DUE TO THE LABOR INVOLVED AND THE FACT THAT REPLACING WITH GM'S BRAKE LINES WILL JUST RUST AGAIN IN 2-3 YEARS. SO I NEED AFTERMARKET LINES, PROBABLY STAINLESS STEEL OR AT LEAST SOMETHING WITH A PROPER AMOUNT OF NICKEL IN IT (WHICH GM HAS SKIMPED ON!) WHICH HOPEFULLY I CAN PUT ON IN THE NEXT FEW MONTHS BEFORE I GET KILLED OR SOMEONE ELSE KILLED. APRIL 2010. *TR
BRAKE LINE FAILURE DUE TO EXTREME RUST. AFTER ACCIDENT I CHECKED SEVERAL OTHER TRUCKS OF THE SAME VINTAGE WHERE I WORKED AND ALL HAD SIMILAR PROBLEM. *TR
BRAKE LINE LET GO WHEN BRAKES WERE APPLIED AND FLUID STARTED TO LEAK FROM UNDER THE DRIVERS SIDE UNDER DOOR/ TRUCK IS NOT OPERABLE SINCE / CURRENTLY WAITING TO BE ABLE TO AFFORD TO HAVE FIXED AS WAS ADVISED THAT COULD COST UP TO 500 HUNDRED DOLLARS AS ALL LINES WOULD NEED TO BE REPAIRED AS THEY ALL ARE CORRODED TO POINT OF MORE…
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BRAKE LINE LET GO WHEN BRAKES WERE APPLIED AND FLUID STARTED TO LEAK FROM UNDER THE DRIVERS SIDE UNDER DOOR/ TRUCK IS NOT OPERABLE SINCE / CURRENTLY WAITING TO BE ABLE TO AFFORD TO HAVE FIXED AS WAS ADVISED THAT COULD COST UP TO 500 HUNDRED DOLLARS AS ALL LINES WOULD NEED TO BE REPAIRED AS THEY ALL ARE CORRODED TO POINT OF MORE BREAKAGE. *TR
1999 GMC SIERRA 1500 5.3 - I HAD BRAKE LINES FAIL ON 3 SEPARATE OCCASIONS. FIRST WAS A HARD LINE TO THE FRONT DRIVERS SIDE, HAPPENED IN MY DRIVEWAY SO NO CRASH. SECOND WAS A LINE COMING FROM THE MASTER CYLINDER. THIS WAS WHILE TOWING A TRAILER AND THE TRAILER BRAKES MANAGED TO GET US STOPPED EVEN THOUGH WE WERE ON A HILL. THE TH…
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1999 GMC SIERRA 1500 5.3 - I HAD BRAKE LINES FAIL ON 3 SEPARATE OCCASIONS. FIRST WAS A HARD LINE TO THE FRONT DRIVERS SIDE, HAPPENED IN MY DRIVEWAY SO NO CRASH. SECOND WAS A LINE COMING FROM THE MASTER CYLINDER. THIS WAS WHILE TOWING A TRAILER AND THE TRAILER BRAKES MANAGED TO GET US STOPPED EVEN THOUGH WE WERE ON A HILL. THE THIRD FAILURE WAS STOPPING AT A LIGHT, LUCKILY NO ONE WAS IN FRONT OF ME AND I HAD PLENTY OF STOPPING DISTANCE. AFTER THAT I REPLACED ALL OF THE REMAINING LINES ON THE TRUCK. NO PROBLEMS SINCE. *TR
1999 GMC SIERRA PICKUP REGULAR CAB 4 WHEEL DISC BRAKES. TRUCK WOULD NOT COME TO A COMPLETE STOP AT A TRAFFIC LIGHT, SPEED LESS THAN 5 MPH. PEDAL VIBRATED THEN WENT ALMOST TO THE FLOOR. TRUCK BUMPED INTO CAR IN FRONT OF IT CAUSING MINOR DAMAGE TO CAR, VERY SLIGHT DAMAGE TO TRUCK. ROADS WERE CLEAR AND DRY, DAY WAS COLD BUT SUNNY. …
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1999 GMC SIERRA PICKUP REGULAR CAB 4 WHEEL DISC BRAKES. TRUCK WOULD NOT COME TO A COMPLETE STOP AT A TRAFFIC LIGHT, SPEED LESS THAN 5 MPH. PEDAL VIBRATED THEN WENT ALMOST TO THE FLOOR. TRUCK BUMPED INTO CAR IN FRONT OF IT CAUSING MINOR DAMAGE TO CAR, VERY SLIGHT DAMAGE TO TRUCK. ROADS WERE CLEAR AND DRY, DAY WAS COLD BUT SUNNY. *TR
BRAKE LINES FAILED ON MY 1999 GMS SIERRA PICK UP. HAD TO BE REPLACED AT A COST OF $2000.00 +'S. ALSO ANTI LOCK BRAKING HAS FAILED DUE TO FRONT SENSOR PROBLEM, GM WANTED TO REPLACE FRONT BEARINGS AND WHEEL HUBS TO FIX THIS FOR $1100.00 MORE,TOLD THEM THIS WAS A RECALL THEY DID IN THE PAST DID NOT WANT TO HEAR IT. HAD TO REMOVE FU…
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BRAKE LINES FAILED ON MY 1999 GMS SIERRA PICK UP. HAD TO BE REPLACED AT A COST OF $2000.00 +'S. ALSO ANTI LOCK BRAKING HAS FAILED DUE TO FRONT SENSOR PROBLEM, GM WANTED TO REPLACE FRONT BEARINGS AND WHEEL HUBS TO FIX THIS FOR $1100.00 MORE,TOLD THEM THIS WAS A RECALL THEY DID IN THE PAST DID NOT WANT TO HEAR IT. HAD TO REMOVE FUSE FOR ANTI LOCK BRAKING, VEHICLE RIDES AND BRAKES OK. *TR
AFTER PUTTING IN NEW BRAKE PADS AND BRAKE ROTORS ON MY 1999 GMC SIERRA 1500 PICKUP TRUCK, I LOST PRESSURE TO THE BRAKE PEDAL. AFTER CHECKING FOR RECALLS AND HAVING MORE THEN ONE CERTIFIED MECHANIC TRY TO SOLVE THE ISSUE I WAS TOLD THE EHCU ( ELECTRO-HYDRAULIC CONTROL UNIT) WAS NOT WORKING. THE COMPANIES TOLD ME THAT IT WAS A COM…
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AFTER PUTTING IN NEW BRAKE PADS AND BRAKE ROTORS ON MY 1999 GMC SIERRA 1500 PICKUP TRUCK, I LOST PRESSURE TO THE BRAKE PEDAL. AFTER CHECKING FOR RECALLS AND HAVING MORE THEN ONE CERTIFIED MECHANIC TRY TO SOLVE THE ISSUE I WAS TOLD THE EHCU ( ELECTRO-HYDRAULIC CONTROL UNIT) WAS NOT WORKING. THE COMPANIES TOLD ME THAT IT WAS A COMMON ITEM TO GO BAD ON ALL TRUCKS 1999 AND NEWER. THERE ARE NO RECALLS ON THEM AND THEY ARE A DEALERSHIP ITEM. THE COST OF A NEW ONE IS $1,068.00. BEING THAT THIS ITEM IS A COMMON PROBLEM AND THE PRICE BEING SO EXPENSIVE WHEN THE VEHICLE IS 10 YRS OLD, I FEEL THE PRICE OF THE UNITS SHOULD BE EITHER RECALLED OR LOWER IN PRICE. *TR
BRAKE LINES ON A 99 GMC COMPLETELY RUSTED THROUGH CAUSING COMPLETE LOSS OF BRAKING ABILITY. *TR
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.