Illustration2001 GMC SIERRA PICK TRUC 1500 - ABS BRAKE MODULE HAS GONE OUT TWO TIMES NOW. *TR
2001 GMC Sierra 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2001 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
40–25K
1525–50K
2050–75K
2775–100K
40100–150K
17150K+
123 reports with mileage · 17 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 59 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 40 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Parking Brake. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
10 crash reports0 fire reports2 injury reports
Service Brakes, Hydraulic complaints
59 reportsTL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CONTACT STATED THAT THE ANTILOCK BRAKE SYSTEM PULSATES BETWEEN 1-5 MPH WHEN THE BRAKE PEDAL IS DEPRESSED. THE DEALER STATED THAT THERE WAS A RECALL; HOWEVER, HIS VIN WAS NOT INCLUDED. AT ANOTHER REPAIR SHOP, THE CONTACT WAS CHARGED FOR A DIAGNOSTIC AND WAS INFORMED THAT THE FAIL…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 1500. THE CONTACT STATED THAT THE ANTILOCK BRAKE SYSTEM PULSATES BETWEEN 1-5 MPH WHEN THE BRAKE PEDAL IS DEPRESSED. THE DEALER STATED THAT THERE WAS A RECALL; HOWEVER, HIS VIN WAS NOT INCLUDED. AT ANOTHER REPAIR SHOP, THE CONTACT WAS CHARGED FOR A DIAGNOSTIC AND WAS INFORMED THAT THE FAILURE WAS DUE TO A DEFECTIVE ANTILOCK BRAKE SENSOR. THE VEHICLE WAS TAKEN TO THE MECHANIC AND THEY STATED THAT THERE WAS FAILURE WITH THE WHEEL SPEED SENSOR ON THE FRONT END OF THE VEHICLE DUE TO CORROSION. THE RECALL NUMBER WAS UNKNOWN. THE FAILURE MILEAGE WAS 27,000 AND CURRENT MILEAGE WAS 33,000. UPDATED 09/13/08. *LJ AT SPEEDS BELOW 10 MPH, THE ABS ACTIVATED, NOT ALLOWING THE VEHICLE TO STOP AT THE PROPER DISTANCE. UPDATED 09/17/08. *JB
ON OUR SIERRA GMC 01 THE ABS BRAKE LIGHT HAS BEEN TURNING ON FOR 2 MONTHS AND HAVE HAD NO USAGE OF OUR EMERGENCY BRAKE, WE FIGURED IT HAD TO DO WITH THE EMERGENCY BRAKES SO WE REPLACED THE EMERGENCY BRAKES AND THE REAR BRAKES WHICH WE PURCHASED THE BRAKE SHOES FOR $74.94,BRAKE PADS $33.97,BRAKE ROTOR$61.98,TWO PNT CALIPER BLK $…
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ON OUR SIERRA GMC 01 THE ABS BRAKE LIGHT HAS BEEN TURNING ON FOR 2 MONTHS AND HAVE HAD NO USAGE OF OUR EMERGENCY BRAKE, WE FIGURED IT HAD TO DO WITH THE EMERGENCY BRAKES SO WE REPLACED THE EMERGENCY BRAKES AND THE REAR BRAKES WHICH WE PURCHASED THE BRAKE SHOES FOR $74.94,BRAKE PADS $33.97,BRAKE ROTOR$61.98,TWO PNT CALIPER BLK $6.44 EACH AND THE TOTAL COST OF PURCHASING THIS WAS $199.91 AND TO DO THE REPAIRS WE HAD A FAMILY MECHANIC FIX WHAT WE BELIEVED COULD BE THE PROBLEM. *TR
BRAKE SYSTEM PERFORMANCE IS POOR. COMPARED TO BRAKE PERFORMANCE WHEN NEW, VEHICLE TAKES TOO LONG TO STOP FROM ANY SPEED ABOVE 20 MPH. HAVE REPLACED ALL PADS, ALL ROTORS, AND BLED BRAKES TWICE; NO NOTICEABLE IMPROVEMENT IN PERFORMANCE. THIS WAS FIRST NOTICED AT 80,000 MILES, VEHICLE CURRENTLY HAS 110,000 MILES. *TR
HAD A RECALL ON MY 2001 GMC SIERRA 1500 SERIES PICK UP TRUCK FOR FRONT WHEEL SPEED SENSOR. AFTER THEY REPLACED IT MY ANTI LOCK BRAKES STARTED ENGAGING AT SPEEDS BELOW 5 MI/HR. NOT ALWAYS BUT FREQUENTLY. ESPECIALLY IN BUMPER TO BUMPER TRAFFIC OR COMING TO A SLOW STOP. *TR
I HAVE A 01 GMC SIERRA (LIGHT DUTY) THAT HAS THE SAME PROBLEM WITH THE ABS BREAKING SYSTEM AS THE TRUCKS IN RECALL IN THE NORTH EASTERN STATES. MY PROBLEM IS I BOUGHT THE TRUCK IN FLORIDA...MOVED TO DELAWARE AND HAVE LIVED HERE THE PAST TEN MONTHS..TRUCK IS STILL REGISTERED IN FLORIDA...AND GMC WON'T REPLACE THE RECALL ABS SENSO…
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I HAVE A 01 GMC SIERRA (LIGHT DUTY) THAT HAS THE SAME PROBLEM WITH THE ABS BREAKING SYSTEM AS THE TRUCKS IN RECALL IN THE NORTH EASTERN STATES. MY PROBLEM IS I BOUGHT THE TRUCK IN FLORIDA...MOVED TO DELAWARE AND HAVE LIVED HERE THE PAST TEN MONTHS..TRUCK IS STILL REGISTERED IN FLORIDA...AND GMC WON'T REPLACE THE RECALL ABS SENSORS BECAUSE I PURCHASED THE TRUCK IN FLORIDA AND ITS HAS A VIN NUMBER SHOWING ORIGINATION IN FLORIDA...HOW RIDICULOUS IS THIS???????? IS THIS LEGAL TO DENY ME A RECALL....WHEN I CAN PROVE I HAVE A PERMANENT RESIDENCE IN DELAWARE???? *JB
TL*- WHILE DRIVING THE 2001 GMC SIERRA EXTENDED CAB AT 20 MPH SHE ATTEMPTED TO DEPRESS THE BRAKES AND THE VEHICLE BEGAQN TO SLOW DOWN , THEN WITHOUT WARNING THE BRAKE PEDAL WENT TO THE FLOOR AND VEHICLE ACCELERATED. THIS FAILURE RESULTED IN A CRASH. THE CONTACT ATTEMPTED TO MANEUVER THE VEHICLE TO THE LEFT TO AVOID A COLLIS…
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TL*- WHILE DRIVING THE 2001 GMC SIERRA EXTENDED CAB AT 20 MPH SHE ATTEMPTED TO DEPRESS THE BRAKES AND THE VEHICLE BEGAQN TO SLOW DOWN , THEN WITHOUT WARNING THE BRAKE PEDAL WENT TO THE FLOOR AND VEHICLE ACCELERATED. THIS FAILURE RESULTED IN A CRASH. THE CONTACT ATTEMPTED TO MANEUVER THE VEHICLE TO THE LEFT TO AVOID A COLLISION, BUT WAS UNABLE TO, AND THE PASSENGER SIDE FRONT BUMPER CRASHED INTO THE DRIVER'S SIDE PASSENGER DOOR OF ANOTHER VEHICLE. THE ROAD CONDITIONS WERE CLEAR. THE VEHICLE WAS DRIVABLE, HOWEVER, THE CONTACT HAD THE VEHICLE TOWED TO THE DEALERSHIP. THE CONTACT STATED THERE WAS A COMPLETE STATE INSPECTION OF THE VEHICLE DONE BY THE DEALERSHIP SEPTEMBER 8, 2006, PRIOR TO THE CRASH. THE DEALERSHIP REPLACED THE FRONT WHEEL SENSOR SPEED. THE DEALERSHIP INVESTIGATED THE VEHICLE AFTER THE CRASH AND NOTFIED THE CONTACT THERE WAS NOTHING WRONG WITH BRAKES. THE VEHICLE CURRENTLY HAD 52300 MILES. *AK
PREMATURE BRAKE FAILURE DUE TO ROTORS RUSTING, REAR ROTORS RUSTED AND WORE PADS OUT FRONT BRAKE PADS WORN OUT ON INSIDE ONLY, PARKING BRAKE WORN OUT ON DRIVERS SIDE INOPERABLE ON PASSENGER SIDE. ALL PADS AND ROTORS NEEDED TO BE REPLACED, ROTORS TOO DELAMINATED TO TURN, PARKING BRAKE PADS REPLACED TOO. ALL PARTS AVAILABLE. 800 DO…
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PREMATURE BRAKE FAILURE DUE TO ROTORS RUSTING, REAR ROTORS RUSTED AND WORE PADS OUT FRONT BRAKE PADS WORN OUT ON INSIDE ONLY, PARKING BRAKE WORN OUT ON DRIVERS SIDE INOPERABLE ON PASSENGER SIDE. ALL PADS AND ROTORS NEEDED TO BE REPLACED, ROTORS TOO DELAMINATED TO TURN, PARKING BRAKE PADS REPLACED TOO. ALL PARTS AVAILABLE. 800 DOLLARS TO REPAIR. *JB
SLOW SPEED UNINTENTIONAL ACTIVATION OF THE ANTI-LOCK BRAKE SYSTEM. *NM
DT*: THE CONTACT STATED A RECALL LETTER WAS RECEIVED PERTAINING TO THE ABS BRAKES. THE VEHICLE WAS TAKEN TO THE DEALER FOR THE RECALL WORK. AFTER THE REPAIRS WERE MADE, THE DEALER DETERMINED THAT ADDITIONAL WORK NEEDED TO BE PERFORMED TO THE BRAKES, BUT WOULD NOT BE COVERED UNDER THE RECALL. THE REPAIRS WERE NEVER MADE AND TH…
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DT*: THE CONTACT STATED A RECALL LETTER WAS RECEIVED PERTAINING TO THE ABS BRAKES. THE VEHICLE WAS TAKEN TO THE DEALER FOR THE RECALL WORK. AFTER THE REPAIRS WERE MADE, THE DEALER DETERMINED THAT ADDITIONAL WORK NEEDED TO BE PERFORMED TO THE BRAKES, BUT WOULD NOT BE COVERED UNDER THE RECALL. THE REPAIRS WERE NEVER MADE AND THE ABS BRAKES STILL PRESENTED PERMANENT AND REPEATABLE PROBLEMS.
Official recalls
204V562000 · Equipment Adaptive/mobility
Nov 26, 2004
ON CERTAIN VANS EQUIPPED WITH SURE-LOK WHEELCHAIR SECUREMENT SYSTEMS, THE SPROCKET TEETH OF THE RETRACTOR ASSEMBLY IS OUT OF ALIGNMENT.
Consequence & remedy
Consequence: IN THE EVENT OF A VEHICLE CRASH, THE WHEELCHAIR MAY NOT BE ADEQUATELY SECURED POSSIBLY RESULTING IN INJURIES TO A WHEELCHAIR OCCUPANT.
Remedy: DEALERS WILL INSPECT AND REPLACE THE WHEELCHAIR SECUREMENT RETRACTORS AS NECESSARY. SURE-LOK WILL HANDLE THE REPAIRS FOR THIS CAMPAIGN. OWNERS SHOULD CONTACT SURE-LOCK AT 1-908-231-1804 OR MOBILITYWORKS AT 1-800-769-8267.
01V125000 · Equipment:other:labels
Apr 10, 2001
VEHICLE DESCRIPTION: CERTAIN 2-WHEEL DRIVE PICKUP TRUCKS FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 120, "TIRE SELECTION AND RIMS FOR MOTOR VEHICLES OTHER THAN PASSENGER CARS." THE PROBLEM WAS CAUSED BY A COMPUTER ERROR THAT RESULTED IN THE CERTIFICATION LABEL LISTING TIRE SIZE AND INFLATION PRESSURE INFORMATION THAT DIFFER FROM THE TIRE SIZE AND THE INFLATION PRESSURE INFORMATION FOR THE TIRES ON THE VEHICLE. IF THE VEHICLE OWNER OR SOMEONE SERVICING THE VEHICLE INFLATES THE TIRES ACCORDING TO THE PRESSURE SPECIFIED ON THE LABEL VERSUS THE APPROPRIATE PRESSURE FOR THE TIRES, THE TIRES COULD BE UNDER-INFLATED OR OVER-INFLATED DEPENDING ON THE TIRES MOUNTED ON THE VEHICLE.
Consequence & remedy
Consequence: IF THE TIRES ARE UNDER-INFLATED, IT COULD REDUCE THE TREAD LIFE OF THE TIRE, AND THE TIRE COULD DEGRADE TO A POINT OF ALLOWING SUDDEN AIR LOSS. IF THE TIRES ARE OVER-INFLATED, IT COULD REDUCE THE TREAD LIFE OF THE TIRE AND INCREASE SUSCEPTIBILITY TO ROAD HAZARD DAMAGE. IF SUDDEN AIR LOSS OR A ROAD HAZARD CAUSES DAMAGE TO A TIRE, CONTROL OF THE VEHICLE COULD BE ADVERSELY AFFECTED AND COULD RESULT IN A VEHICLE CRASH.
Remedy: OWNERS WILL BE PROVIDED WITH A NEW LABEL AND INSTALLATION INSTRUCTIONS. HOWEVER, A DEALER CAN INSTALL THE LABEL IF THE OWNER SO DESIRES. OWNER NOTIFICATION BEGAN MAY 31, 2001. OWNERS WHO DO NOT RECEIVE THE LABEL AND INSTALLATION INSTRUCTIONS WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.
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.