NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
166 reports78,000 miles · Jun 11, 2012
Service Brakes
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 30 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE PEDAL WAS ABNORMALLY DEPRESSED INTO THE FLOORBOARD. THE CONTACT STOPPED THE VEHICLE AND AFTER INSPECTING, HE NOTICED THAT ALL THE BRAKE LINES WERE CORRODED. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DI…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 30 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE PEDAL WAS ABNORMALLY DEPRESSED INTO THE FLOORBOARD. THE CONTACT STOPPED THE VEHICLE AND AFTER INSPECTING, HE NOTICED THAT ALL THE BRAKE LINES WERE CORRODED. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTICS OR REPAIRS. THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 78,000.
NHTSA ODI #10461169
40,478 miles · Jun 2, 2012
Service Brakes
I WENT TO APPLY PARKING BRAKE ON MY 2002 GMC SIERRA 1500 WITH 40478 MILES ON IT AND THERE WAS A LOUD SNAP (I HAD ALREADY STOPPED THE TRUCK AND WAS GOING TO PARK IT) - EMERGENCY BRAKE PEDAL WENT TO THE FLOOR. RELEASE LEVER WORKS, PEDAL WILL GO BACK UP. IF IT IS PUSHED AGAIN THE PEDAL WILL GO TO THE FLOOR AND THERE IS NO PARK…
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I WENT TO APPLY PARKING BRAKE ON MY 2002 GMC SIERRA 1500 WITH 40478 MILES ON IT AND THERE WAS A LOUD SNAP (I HAD ALREADY STOPPED THE TRUCK AND WAS GOING TO PARK IT) - EMERGENCY BRAKE PEDAL WENT TO THE FLOOR. RELEASE LEVER WORKS, PEDAL WILL GO BACK UP. IF IT IS PUSHED AGAIN THE PEDAL WILL GO TO THE FLOOR AND THERE IS NO PARKING BRAKE. *TR
NHTSA ODI #10460366
103,000 miles · May 24, 2012
Air BagsCrashInjury
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 65 MPH,THE CONTACT CRASHED INTO A CONCRETE WALL HEAD FIRST. THE AIR BAGS DID NOT DEPLOY. THE CONTACT SUSTAINED INJURIES TO THE RIBS, SHOULDER AND RIGHT KNEE. THE PASSENGER SUSTAINED INJURIES TO THE RIGHT KNEE AND LACERATIONS TO THE NECK FROM THE SEAT BELT. …
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 65 MPH,THE CONTACT CRASHED INTO A CONCRETE WALL HEAD FIRST. THE AIR BAGS DID NOT DEPLOY. THE CONTACT SUSTAINED INJURIES TO THE RIBS, SHOULDER AND RIGHT KNEE. THE PASSENGER SUSTAINED INJURIES TO THE RIGHT KNEE AND LACERATIONS TO THE NECK FROM THE SEAT BELT. THE CONTACT AND THE PASSENGER WERE TRANSPORTED TO THE HOSPITAL VIA AMBULANCE. THE POLICE REPORTED TO THE SCENE AND A REPORT WAS FILED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE MANUFACTURER HAD THE VEHICLE INSPECTED BY AN ENGINEER. THE CONTACT STATED THE MANUFACTURER DID NOT EXPLAIN THE CAUSE OF THE AIR BAG FAILURE. THE VEHICLE WAS DESTROYED AND NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 103,000.
NHTSA ODI #10459570
62,500 miles · May 4, 2012
Service Brakes, Hydraulic
BRAKE PEDAL GOES TO FLOOR AND IS KICKED BACK, NO BRAKES AT LOW SPEEDS 5 TO 8 MPH. WAS SUBJECT TO RECALL WHEN STILL UNDER MANUFACTURES WARRANTY. PROBLEM IS SAME NOW. NO BRAKES AT LOW SPEEDS. PURCHASED THIS VEHICLE NEW, VERY LOW MILEAGE. GMC WILL NOT RESPOND TO COMPLAINT. THIS IS A SERIOUS ISSUE. *TR
NHTSA ODI #10457500
130,000 miles · May 4, 2012
Engine And Engine Cooling
EXHAUST LEAK ON DRIVERS SIDE OF ENGINE. BROKEN BOLTS ON EXHAUST MANIFOLD. *TR
NHTSA ODI #10457487
145,000 miles · Apr 3, 2012
Service Brakes, Hydraulic
ABS ACTIVATES AT SLOW SPEEDS WHEN NOT NEEDED, CAUSING VEHICLE TO BE UNABLE TO STOP IN A REASONABLE DISTANCE. THIS MOST OFTEN OCCURS WHEN PULLING INTO A PARKING SPACE AT SLOW SPEEDS WITH THE STEERING WHEEL TURNED TO THE LEFT OR RIGHT. *TR
NHTSA ODI #10453954
103,000 miles · Mar 19, 2012
Air BagsCrashInjury
WE WERE TRAVELING WEST BOUND ON GEORGE BUSH TURNPIKE IN PLANO, TEXAS AT THE N CENTRAL EXPRESSWAY EXIT A VEHICLE TRAVELING IN THE LANE TO OUR RIGHT CAME INTO MY LANE CUTTING ME OFF AND I SWERVED TO MISS SAID VEHICLE AND CORRECTED TO THE LEFT AND CORRECTED BACK TO THE RIGHT TO MISS A VEHICLE COMING UP ON MY LEFT. IT HAD BEEN RAINI…
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WE WERE TRAVELING WEST BOUND ON GEORGE BUSH TURNPIKE IN PLANO, TEXAS AT THE N CENTRAL EXPRESSWAY EXIT A VEHICLE TRAVELING IN THE LANE TO OUR RIGHT CAME INTO MY LANE CUTTING ME OFF AND I SWERVED TO MISS SAID VEHICLE AND CORRECTED TO THE LEFT AND CORRECTED BACK TO THE RIGHT TO MISS A VEHICLE COMING UP ON MY LEFT. IT HAD BEEN RAINING AND THE ROADS WERE SLICK, WE WENT INTO A SKID AND INTO A CONCERT BARRIER TRAVELING AROUND 60 TO 65 MILES AN HOUR. NO OTHER VEHICLE WAS INVOLVED. MYSELF AND MY PASSENGER WERE BOTH INJURED. WE RECEIVED SUBSTANTIAL SEATBELT TRAUMA TO OUR UPPER TORSO AND MYSELF AS THE DRIVE SUSTAINED A BROKEN KNEE CAP AND MY PASSENGER RECEIVED DEEP BRUISING TO HER UPPER TORSO AND SHOULDER AND DEEP BRUISE AND TISSUE TRAUMA TO HER KNEE. *JS
NHTSA ODI #10452283
62,500 miles · Jan 23, 2012
Service Brakes, Hydraulic
VEHICLE BRAKE PEDAL GOES TO THE FLOOR AT LOW SPEEDS 5-10MPH DURING STOP. THE ABS LIGHT DOES NOT ILLUMINATE. VERY CLOSE TO SERIOUS ACCIDENT (S). THIS IS NOT A TRACTION OR LACK OF TRACTION ISSUE. THIS SEEMS TO BE WHEEL SPEED SENSORS THAT CONTINUALLY REQUIRE REPLACING. REAR CALIPERS ON THIS VEHICLE WITH LESS THAN 65K MILES HAVE B…
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VEHICLE BRAKE PEDAL GOES TO THE FLOOR AT LOW SPEEDS 5-10MPH DURING STOP. THE ABS LIGHT DOES NOT ILLUMINATE. VERY CLOSE TO SERIOUS ACCIDENT (S). THIS IS NOT A TRACTION OR LACK OF TRACTION ISSUE. THIS SEEMS TO BE WHEEL SPEED SENSORS THAT CONTINUALLY REQUIRE REPLACING. REAR CALIPERS ON THIS VEHICLE WITH LESS THAN 65K MILES HAVE BEEN REPLACED TWICE. BRAKES HAVE BEEN A PROBLEM SINCE NEW. BRAKE LINES ROTTED WITH LESS THAN 60K MILES ON VEHICLE AND GM REFUSED TO CONSIDER THIS A DEFECT WHICH IT WAS AND IS. *TR
NHTSA ODI #10444915
67,340 miles · Jan 20, 2012
Service Brakes, Hydraulic
WAS DRIVING DONW SREET IN CAME TO STOP SIGN BRAKES FAILED, ALMOST WAS HIT BY 2 CARS, HAD TRUCK TOWED TO GARAGE, MECHANIC SAID HE IS REPLACING MORE BRAKE LINES ON GM PRODUCTS THAN EVER BEFORE, SAME THING HAPPENED TO MY 93 ELDORADO. GM IS USING VERY CHEAP BRAKE LINES THAT CORRODE VERY QUICKLY, THEY ARE NOT PROTECTED BE ANY ANTI-CO…
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WAS DRIVING DONW SREET IN CAME TO STOP SIGN BRAKES FAILED, ALMOST WAS HIT BY 2 CARS, HAD TRUCK TOWED TO GARAGE, MECHANIC SAID HE IS REPLACING MORE BRAKE LINES ON GM PRODUCTS THAN EVER BEFORE, SAME THING HAPPENED TO MY 93 ELDORADO. GM IS USING VERY CHEAP BRAKE LINES THAT CORRODE VERY QUICKLY, THEY ARE NOT PROTECTED BE ANY ANTI-CORROSIVE MATERIAL OR SPRAY. TRUCK IS AT AN AUTO SERV WAITING FOR REPAIR, WAS TOLD WILL BE BETWEEN 6-7 HUNDRED TO FIX! GM SHOULD PAY FOR THIS! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) *TT
NHTSA ODI #10444636
102,000 miles · Nov 3, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THE BRAKE LIGHT ILLUMINATED CONSTANTLY, THE VEHICLE LOST BRAKE FLUID PREMATURELY, AND A BRAKE LINE RUPTURED WHILE DRIVING. THE VEHICLE WAS TAKEN TO THE DEALER WHO PERFORMED A DIAGNOSTIC TEST THAT LOCATED THE FAILURE IN THE BRAKE LINES, AND CALIPERS DUE TO CORROSION.…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT STATED THE BRAKE LIGHT ILLUMINATED CONSTANTLY, THE VEHICLE LOST BRAKE FLUID PREMATURELY, AND A BRAKE LINE RUPTURED WHILE DRIVING. THE VEHICLE WAS TAKEN TO THE DEALER WHO PERFORMED A DIAGNOSTIC TEST THAT LOCATED THE FAILURE IN THE BRAKE LINES, AND CALIPERS DUE TO CORROSION. THE VEHICLE WAS REPAIRED. THE DEALER REPLACED THE BRAKE LINES, AND CALIPERS. THE FAILURE MILEAGE WAS 102,000 AND THE CURRENT MILEAGE WAS 109,963. UPDATED 12/20/11*LJ UPDATED 01/19/12
NHTSA ODI #10434074
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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