IllustrationGRADUAL FAILURE OF PARKING BRAKE. PARKING BRAKE FAILED TO HOLD VEHICLE IN PLACE WHILE JACKING OR IN GEAR WITH AUTOMATIC TRANSMISSION. PROVIDED NO EMERGENCY BRAKING. NO ACTION TAKEN TO CORRECT. A RECALL WAS PRESENT FOR MANUAL TRANSMISSION MODELS ONLY EVEN THOUGH THE BRAKES WERE IDENTICAL. *AK
2001 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2001 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 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
290–25K
3825–50K
7150–75K
8075–100K
102100–150K
65150K+
385 reports with mileage · 83 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 147 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 133 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 32 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
48 crash reports5 fire reports20 injury reports
What owners actually said
468 reportsTL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE ANTILOCK BRAKE SENSORS ARE ENGAGING WHEN THE VEHICLE IS TRAVELING 5 MPH OR LESS. THE FAILURE OCCURS WHILE DRIVING AND THIS IS THE SECOND TIME. THE FIRST OCCURRENCE WAS REPAIRED UNDER SAFETY RECALL # 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK).…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE ANTILOCK BRAKE SENSORS ARE ENGAGING WHEN THE VEHICLE IS TRAVELING 5 MPH OR LESS. THE FAILURE OCCURS WHILE DRIVING AND THIS IS THE SECOND TIME. THE FIRST OCCURRENCE WAS REPAIRED UNDER SAFETY RECALL # 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). FOR THE SECOND OCCURRENCE, LESS THAN 20,000 MILES LATER, THE DEALER HAS REFUSED TO MAKE THE REPAIR UNDER THE SAFETY RECALL. THE CURRENT MILEAGE IS 97,000 AND FAILURE MILEAGE WAS 96,000.
(1) NO PRIOR EVENTS LEADING TO THE FAILURE (2) THE PASSENGER REAR SEATBELT WILL ONLY RETRACT AND IS VERY HARD TO RETRIEVE. MY FOUR (4) YEAR OLD SON WAS SITTING IN THE SEAT AND THE BELT STARTED TO TIGHTEN UP AND HE WAS BEING CONSTRICTED SO MUCH THAT HE COULDN'T BREATHE. I NOTICED THE EVENT TAKING PLACE AND IMMEDIATELY STOPPED …
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(1) NO PRIOR EVENTS LEADING TO THE FAILURE (2) THE PASSENGER REAR SEATBELT WILL ONLY RETRACT AND IS VERY HARD TO RETRIEVE. MY FOUR (4) YEAR OLD SON WAS SITTING IN THE SEAT AND THE BELT STARTED TO TIGHTEN UP AND HE WAS BEING CONSTRICTED SO MUCH THAT HE COULDN'T BREATHE. I NOTICED THE EVENT TAKING PLACE AND IMMEDIATELY STOPPED THE VEHICLE AND UNBUCKLED HIM. (3) THE SEAT BELT IS TO BE REPLACED AT A WHOPPING $250.00 CHARGE FROM THE CHEVY DEALERSHIP. THE ENTIRE SEAT BELT AND RETRACTION DEVICE NEEDED REPLACEMENT. WE SWITCHED HIS SEAT TO THE OTHER SIDE. WE THOUGHT MAYBE IT WAS THE BELT BEING TANGLED UP INSIDE THE RETRACTION DEVICE, HOWEVER THE CHEVY DEALERSHIP STATED THAT IT WAS A MALFUNCTIONING RETRACTOR AND ENTIRE SEAT BELT NEEDS REPLACED. *TR
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 10 MPH AND APPLYING THE BRAKE, THE VEHICLE TAKES A LONG TIME TO STOP. THE DEALER HAS BEEN UNABLE TO DETERMINE THE CAUSE OF FAILURE. THE MANUFACTURER STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA RECALL # 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTIL…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 10 MPH AND APPLYING THE BRAKE, THE VEHICLE TAKES A LONG TIME TO STOP. THE DEALER HAS BEEN UNABLE TO DETERMINE THE CAUSE OF FAILURE. THE MANUFACTURER STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA RECALL # 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE VEHICLE HAS NOT BEEN TO THE DEALER. THE CURRENT MILEAGE IS 61,000 AND FAILURE MILEAGE WAS 20,000.
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. HE STATED THAT THE PARKING BRAKE DOES NOT WORK. THE DEALER INSPECTED THE VEHICLE AND DETERMINED THERE WAS A MALFUNCTION WITH THE PARKING BRAKE. THE DEALER STATED THAT THE VEHICLE WAS NOT INCLUDED AS PART OF A RECALL. THE FAILURE AND CURRENT MILEAGES WERE 56,000. THE VIN W…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. HE STATED THAT THE PARKING BRAKE DOES NOT WORK. THE DEALER INSPECTED THE VEHICLE AND DETERMINED THERE WAS A MALFUNCTION WITH THE PARKING BRAKE. THE DEALER STATED THAT THE VEHICLE WAS NOT INCLUDED AS PART OF A RECALL. THE FAILURE AND CURRENT MILEAGES WERE 56,000. THE VIN WAS UNAVAILABLE.
WHILE DRIVING MY 2001 CHEVROLET SILVERADO I AM REQUIRED TO USE MORE THAN THE USUAL AMOUNT OF FORCE TO DEPRESS THE ACCELERATOR, AND WHEN I DO THE VEHICLE LUNGES FORWARD. MY ACCELERATOR PEDAL WOUND UP "LIMP" ON THE FLOOR OF THE VEHICLE THIS WEEKEND WHEN PUSHING DOWN ON THE PEDAL LEAVING THE VEHICLE UNABLE TO ACCELERATE WHILE DRIV…
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WHILE DRIVING MY 2001 CHEVROLET SILVERADO I AM REQUIRED TO USE MORE THAN THE USUAL AMOUNT OF FORCE TO DEPRESS THE ACCELERATOR, AND WHEN I DO THE VEHICLE LUNGES FORWARD. MY ACCELERATOR PEDAL WOUND UP "LIMP" ON THE FLOOR OF THE VEHICLE THIS WEEKEND WHEN PUSHING DOWN ON THE PEDAL LEAVING THE VEHICLE UNABLE TO ACCELERATE WHILE DRIVING IN TRAFFIC. THE VEHICLE WOUND UP BEING TOWED FOR REPAIR. *TR
FAILURE OF FUEL PUMP IN MY 2001 5.3 LITER CHEVROLET SILVERADO TO ACCURATELY DETERMINE AMOUNT OF FUEL IN TANK. WHEN I FILL MY TANK WITH FUEL THE GAUGE READS ERRATICALLY, THE NEEDLE PINS ITSELF IN THE EMPTY POSITION. THE PROBLEM IS CONSTANT AND ON GOING. I NOTIFIED GM AND THEY OFFER NO REPAIR YET THIS SAME PROBLEM QUALIFIED AS …
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FAILURE OF FUEL PUMP IN MY 2001 5.3 LITER CHEVROLET SILVERADO TO ACCURATELY DETERMINE AMOUNT OF FUEL IN TANK. WHEN I FILL MY TANK WITH FUEL THE GAUGE READS ERRATICALLY, THE NEEDLE PINS ITSELF IN THE EMPTY POSITION. THE PROBLEM IS CONSTANT AND ON GOING. I NOTIFIED GM AND THEY OFFER NO REPAIR YET THIS SAME PROBLEM QUALIFIED AS A RECALL FOR REPAIR ON THE 2001 MODEL SUBURBAN WITH THE 5.3 LITER ENGINE. SIMPLY DO A GOOGLE SEARCH FOR 2001 SIVLERADO FUEL GAUGE PROBLEMS AND YOU WILL BE AMAZED AT THE NUMBER OF RESPONDENTS WHO HAVE THE IDENTICAL PROBLEM YET THERE IS NO ACCOUNTABILITY FROM GM. THANK YOU *TR
TL*THE CONTACT OWNS A 2001 CHEVROLET K1500. THE CONTACT STATED THAT THE FUEL GAUGE WORKS PERIODICALLY AND THE PART IS INSIDE THE FUEL TANK. HE STATED THAT IT COSTS $600 JUST TO REPAIR THE FUEL GAUGE. THE MANUFACTURER HAS NOT BEEN CONTACTED. THE VIN, ENGINE SIZE, AND CURRENT AND FAILURE MILEAGES WERE UNKNOWN. UPDATED 06/28/0…
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TL*THE CONTACT OWNS A 2001 CHEVROLET K1500. THE CONTACT STATED THAT THE FUEL GAUGE WORKS PERIODICALLY AND THE PART IS INSIDE THE FUEL TANK. HE STATED THAT IT COSTS $600 JUST TO REPAIR THE FUEL GAUGE. THE MANUFACTURER HAS NOT BEEN CONTACTED. THE VIN, ENGINE SIZE, AND CURRENT AND FAILURE MILEAGES WERE UNKNOWN. UPDATED 06/28/07 *TR
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE VEHICLE HAS EXPERIENCED SEVERAL FAILURES SINCE THE TIME OF PURCHASE. FUEL IS LEAKING FROM UNDERNEATH THE VEHICLE AND THE TIRE RODS AND WHEEL BEARINGS HAD TO BE REPLACED. THE CURRENT MILEAGE IS 90,000 AND FAILURE MILEAGE WAS 66,000.
THE STALK FOR THE COMBINATION TURN SIGNAL, WINDSHIELD WIPER, CRUISE CONTROL, BROKE RESULTED IN UNRELIABLE OPERATION OF THE WINDSHIELD WIPERS AND UNRELIABLE TURN SINGAL OPERATION. IN THE CASE OF THE 2001 SILVERADO THE WINDSHIELD WIPERS ACTIVATED WHEN THE TURN SIGNALWAS SELECTED. SINCE THIS SAME CONTROL WAS USED FOR SEVERAL CR…
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THE STALK FOR THE COMBINATION TURN SIGNAL, WINDSHIELD WIPER, CRUISE CONTROL, BROKE RESULTED IN UNRELIABLE OPERATION OF THE WINDSHIELD WIPERS AND UNRELIABLE TURN SINGAL OPERATION. IN THE CASE OF THE 2001 SILVERADO THE WINDSHIELD WIPERS ACTIVATED WHEN THE TURN SIGNALWAS SELECTED. SINCE THIS SAME CONTROL WAS USED FOR SEVERAL CRITICAL FUNCTIONS, INCLUDING TURN SIGNALS, WIPERS, AND CRUISE CONTROL ACTIVATION AND DEACTIVATION, I EXPECT CERTAIN FAILURE MODES COULD PRESENT A SERIOUS SAFETY ISSUE. RESEARCHING THIS ISSUE, IT SEEMS TO BE A COMMON PROBLEM ON THIS MODEL SILVERADO AND OTHER GM VEHICLES THAT USE THE SAME COMBINATION CONTROL.*AK
Official recalls
0No recalls in this snapshot.
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.