NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
181 reports66,500 miles · Feb 24, 2010
Service Brakes, Electric
I HAVE A 2000 GMC SIERRA WITH AN ANTI-LOCK BRAKE PROBLEM. AT LOW SPEED BRAKING THE TRUCK'S ANTI-LOCK SYSTEM COMES ON AND CAUSES THE TRUCK NOT TO STOP CORRECTLY. THIS HAS CAUSED MANY NEAR COLLISIONS. I SPOKE TO GM ABOUT THE PROBLEM AND WAS TOLD THE THEY HAD REPAIRED THE TRUCK BEFORE I OWNED IT, AND THEY HAD FIXED THE PROBLEM. BUT…
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I HAVE A 2000 GMC SIERRA WITH AN ANTI-LOCK BRAKE PROBLEM. AT LOW SPEED BRAKING THE TRUCK'S ANTI-LOCK SYSTEM COMES ON AND CAUSES THE TRUCK NOT TO STOP CORRECTLY. THIS HAS CAUSED MANY NEAR COLLISIONS. I SPOKE TO GM ABOUT THE PROBLEM AND WAS TOLD THE THEY HAD REPAIRED THE TRUCK BEFORE I OWNED IT, AND THEY HAD FIXED THE PROBLEM. BUT IF THE SAME PROBLEM IS HAPPENING AGAIN, THEN THEY HAVE NOT FIXED IT. I UNDERSTAND THAT WEAR AND TEAR IS A ISSUE WITH EVERY CAR AND THAT OVER TIME THINGS NEED TO BE REPAIRED, BUT IF IT'S THE BRAKE SYSTEM ITSELF AND NOT THE CONDITION OF THE BRAKES, SHOULDN'T THAT FALL ON GM TO MAKE THAT CORRECTION. THANK YOU *TR
NHTSA ODI #10313549
164,000 miles · Jan 13, 2010
Air BagsCrash
I WAS DRIVING IN VERY HORRIBLE CONDITIONS ALONG HWY 97 IN KLAMATH FALLS,OR AND I HIT A PATCH OF BLACK ICE AND BEGUN TO SPIN OUT, MY TRUCK THEN BEGIN HEADING TOWARDS A DEEP DITCH. MY TRUCK WENT DOWN A 30 FOOT BANK AND LANDED NOSE FIRST INTO THE GROUND AND MY TRUCK THEN LANDED ON IT'S SIDE WHERE IT CAME TO REST. *TR
NHTSA ODI #10299576
98,500 miles · Dec 14, 2009
Service Brakes, Hydraulic
ABS ACTIVATION AT SLOW SPEED, OFTEN WHEN TURNING. PAID FOR WHEEL SPEED SENSOR CLEANING AND REINSTALL 12/14/2004. RECALL FOR SAME PROBLEM PERFORMED 11/16/2005. SYMPTOMS HAVE RETURNED, DEALER WILL NOT PERFORM RECALL PROCEDURE A SECOND TIME AT NO COST. SLOW SPEED ABS ACTIVATION INCREASES STOPPING DISTANCE, AND CAN CAUSE A CRASH. *T…
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ABS ACTIVATION AT SLOW SPEED, OFTEN WHEN TURNING. PAID FOR WHEEL SPEED SENSOR CLEANING AND REINSTALL 12/14/2004. RECALL FOR SAME PROBLEM PERFORMED 11/16/2005. SYMPTOMS HAVE RETURNED, DEALER WILL NOT PERFORM RECALL PROCEDURE A SECOND TIME AT NO COST. SLOW SPEED ABS ACTIVATION INCREASES STOPPING DISTANCE, AND CAN CAUSE A CRASH. *TR
NHTSA ODI #10295601
99,000 miles · Nov 11, 2009
Service Brakes, Hydraulic
EXCESSIVE RUST FROM MIDDLE OF UNDER CARRIAGE ON BACK LEAD TO TWO PART FAILURES. REAR MAIN BRAKE LINE ON DRIVER SIDE OF VEHICLE BURST WHILE APPLYING BRAKES IN DRIVEWAY LEADING TO BRAKE FAILURE. I STOPPED TRUCK BY APPLYING EMERGENCY BRAKE AND SLAMMING TRANSMISSION INTO PARK--THANK GOD THIS HAPPENED IN MY DRIVEWAY AND NOT ON THE …
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EXCESSIVE RUST FROM MIDDLE OF UNDER CARRIAGE ON BACK LEAD TO TWO PART FAILURES. REAR MAIN BRAKE LINE ON DRIVER SIDE OF VEHICLE BURST WHILE APPLYING BRAKES IN DRIVEWAY LEADING TO BRAKE FAILURE. I STOPPED TRUCK BY APPLYING EMERGENCY BRAKE AND SLAMMING TRANSMISSION INTO PARK--THANK GOD THIS HAPPENED IN MY DRIVEWAY AND NOT ON THE ROAD-- RESEARCH ON INTERNET REVEALS EXCESSIVE RUST FOR THESE TRUCKS IS COMMON. AFTER HEARING ABOUT THE TOYOTA TUNDRAS DROPPING A SPARE TIRE DUE TO EXCESSIVE RUST, I FIGURE BRAKE FAILURE POSSIBLY LEADING TO TRAFFIC ACCIDENT QUALIFIES TOO. *TR
NHTSA ODI #10291817
89,000 miles · Nov 11, 2009
Fuel System, OtherStructure
EXCESSIVE RUST FROM MIDDLE OF UNDER CARRIAGE ON BACK LEAD PART FAILURES. ONE OF TWO STRAPS HOLDING UP GAS TANK, REAR STRAP, BROKE AND REAR OF GAS TANK DROPPED ABOUT 4 INCHES. I WAS NOT DRIVING THE TRUCK, JUST NOTICED THEN GASPED. I REPLACED THE GAS TANK STRAP. RESEARCH ON INTERNET REVEALS EXCESSIVE RUST FOR THESE TRUCKS IS C…
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EXCESSIVE RUST FROM MIDDLE OF UNDER CARRIAGE ON BACK LEAD PART FAILURES. ONE OF TWO STRAPS HOLDING UP GAS TANK, REAR STRAP, BROKE AND REAR OF GAS TANK DROPPED ABOUT 4 INCHES. I WAS NOT DRIVING THE TRUCK, JUST NOTICED THEN GASPED. I REPLACED THE GAS TANK STRAP. RESEARCH ON INTERNET REVEALS EXCESSIVE RUST FOR THESE TRUCKS IS COMMON. AFTER HEARING ABOUT THE TOYOTA TUNDRAS DROPPING A SPARE TIRE DUE TO EXCESSIVE RUST, I FIGURE A PART FAILURE POSSIBLY LEADING TO A DROPPING A GAS TANK QUALIFIES TOO. *TR
NHTSA ODI #10291816
58,300 miles · Nov 4, 2009
Service Brakes, HydraulicCrash
2000 GMC SIERRA 4X4 PICK UP ABS BRAKE SYSTEM ACTIVATES AT VERY LOW SPEED, THUS RELEASING BRAKES AND CAUSING VEHICLE TO CONTINUE FORWARD CAUSING ME TO GO OVER A BANK OR HIT OBJECT AHEAD. *TR
NHTSA ODI #10291014
102,000 miles · Nov 3, 2009
Power Train
TL* THE CONTACT OWNS A 2000 GMC SIERRA 1500. WHILE EXITING A RAMP AT 35 MPH HE LOST POWER STEERING. HE WAS ABLE TO SAFELY DRIVE THE VEHICLE HOME. UPON VEHICLE INSPECTION HE NOTICED THAT THE POWER STEERING PUMP SHAFT FRACTURED. HE REPAIRED THE VEHICLE HIMSELF. HE WAS ADVISED BY THE MANUFACTURER THAT HIS VEHICLE IDENTIFICATION …
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TL* THE CONTACT OWNS A 2000 GMC SIERRA 1500. WHILE EXITING A RAMP AT 35 MPH HE LOST POWER STEERING. HE WAS ABLE TO SAFELY DRIVE THE VEHICLE HOME. UPON VEHICLE INSPECTION HE NOTICED THAT THE POWER STEERING PUMP SHAFT FRACTURED. HE REPAIRED THE VEHICLE HIMSELF. HE WAS ADVISED BY THE MANUFACTURER THAT HIS VEHICLE IDENTIFICATION NUMBER WAS EXCLUDED FROM RECALL# 05V005000 (POWER TRAIN:DRIVE LINE:DRIVE SHAFT). THE FAILURE MILEAGE WAS 102,000. UPDATED 12/10/09. *LJ UPDATED 12/10/09.*JB
NHTSA ODI #10290768
125,800 miles · Sep 1, 2009
Tires
ON 02/01/06 I PURCHASED 4 TIRES FOR MY TRUCK FROM FIRESTONE AND TODAY I TOOK IT TO THE FIRESTONE DEALER AS I HAVE A RADIAL PULL IN ONE OF THE TIRES. THEY TOLD ME THAT THE TIRES ON MY TRUCK WERE 8,9 AND 10 YEARS OLD AND THAT THEY COULD NOT FIX MY PROBLEM. THE DOT # ON MY RECEIPT IS 7XW8PIB5500 WHICH IS NOT CORRECT AND WITH THE 00…
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ON 02/01/06 I PURCHASED 4 TIRES FOR MY TRUCK FROM FIRESTONE AND TODAY I TOOK IT TO THE FIRESTONE DEALER AS I HAVE A RADIAL PULL IN ONE OF THE TIRES. THEY TOLD ME THAT THE TIRES ON MY TRUCK WERE 8,9 AND 10 YEARS OLD AND THAT THEY COULD NOT FIX MY PROBLEM. THE DOT # ON MY RECEIPT IS 7XW8PIB5500 WHICH IS NOT CORRECT AND WITH THE 00 ON THE END THE TIRES WERE OVER 6 YEARS OLD WHEN SOLD TO ME. I CALLED THERE MAIN OFFICE AND THEY TOLD ME THEY WOULD DO AN ADJUSTMENT AGAINST THE AGE OF MY TIRE AND MILEAGE AND I WOULD HAVE TO PAY THE REST WHICH COMES TO OVER $565.00 DOLLARS. IN MY OLD PURCHASE I HAVE LIFETIME WHEEL BALANCE, LIFETIME WHEEL BALANCE FOR LABOR AND RUBBER VALVE, PLUS PROTECT TIRE REPAIR AND REPLACEMENT. I ALSO HAVE TIRE DRY ROT ALONG WITH THE RADIAL PULL AND FEEL THAT THE TIRES I GOT WERE WELL OVER THE 5 YEARS AND I EXPECT TO GET FOUR NEW TIRES WITH THE SAME WARRANTY BECAUSE THAT IS WHAT I PAID FOR IN THE FIRST PLACE. THEY SOLD ME TIRES FIRST OF ALL THAT WERE TO OLD AND THEY DID NOT HAVE THE CORRECT DOT NUMBER. WITH THE WAY THE ONE FRONT TIRE THAT HAS A RADIAL PULL KEEPS PULLING TO THE LEFT IT COULD CAUSE AN ACCIDENT AND WITH THE TIRE ROT THEY COULD BLOW OUT AT ANY TIME AND CAUSE AN ACCIDENT ALSO. *TR
NHTSA ODI #10282541
61,000 miles · Jun 3, 2009
Tires
TIRE FAILURE AFTER 15,000 MILES. STRONG RADIAL PULL FROM RIGHT TO LEFT AT HIGHWAY SPEED. ON FURTHER INSPECTION ALL FOUR TIRES HAD COMPLETE TREAD SEPARATION ON OUTSIDE TREAD CHANNEL COVERING THE CIRCUMFERENCE OF THE TIRES. SOME TREAD SEPARATION HAS STARTED ON THE FAR INSIDE CHANNEL OF THE FOUR TIRES. UNUSUAL AMOUNT OF WARE HAS OC…
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TIRE FAILURE AFTER 15,000 MILES. STRONG RADIAL PULL FROM RIGHT TO LEFT AT HIGHWAY SPEED. ON FURTHER INSPECTION ALL FOUR TIRES HAD COMPLETE TREAD SEPARATION ON OUTSIDE TREAD CHANNEL COVERING THE CIRCUMFERENCE OF THE TIRES. SOME TREAD SEPARATION HAS STARTED ON THE FAR INSIDE CHANNEL OF THE FOUR TIRES. UNUSUAL AMOUNT OF WARE HAS OCCURRED ON THE OUTSIDE SHOULDER OF ALL FOUR TIRES. CRACKING WAS NOTED ON TREAD LUGS. REPLACED ALL FOUR TIRES UNDER WARRANTY. *TR
NHTSA ODI #10272815
88,000 miles · May 17, 2009
Power Train
TRUCK DRIVE TRAIN INTERMITTENTLY MAKES CLUNK NOISE WHEN I FIRST START OFF FROM A STOP. WHEN I STOP AT A RED LIGHT IT FEELS LIKE SOMEONE JUST HIT ME FROM BEHIND GOING FROM FIRST INTO SECOND GEAR. IT STARTED AT ABOUT 88000 MILES / 4 YEARS AGO AND HAS BEEN GETTING PROGRESSIVELY WORSE. THE PROBLEM SEEMS TO BE ELECTRICAL OF SORTS. WH…
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TRUCK DRIVE TRAIN INTERMITTENTLY MAKES CLUNK NOISE WHEN I FIRST START OFF FROM A STOP. WHEN I STOP AT A RED LIGHT IT FEELS LIKE SOMEONE JUST HIT ME FROM BEHIND GOING FROM FIRST INTO SECOND GEAR. IT STARTED AT ABOUT 88000 MILES / 4 YEARS AGO AND HAS BEEN GETTING PROGRESSIVELY WORSE. THE PROBLEM SEEMS TO BE ELECTRICAL OF SORTS. WHEN THE TRUCK STARTS ACTING UP WITH THIS PROBLEM I USUALLY PULL OFF TO THE SIDE OF THE ROAD & TURN OFF THE IGNITION...WAIT 20-30 SECONDS & RESTART THE IGNITION...98% OF THE TIME THE PROBLEM GOES AWAY. THIS IS A RECURRING PROBLEM & THE DEALERSHIPS GIVE ME NOTHING BUT THE RUNAROUND. THE TRUCK SERVES ME WELL WITH 238000 MILES ON HER BUT I MOST DEFIANTLY WOULD LIKE TO FIND THE CURE & FIX THIS PROBLEM. *TR
NHTSA ODI #10268964
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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