IllustrationPULLING INTO A DRIVEWAY A BRAKELINE RUPTURED ALONG FRAME RAIL IN FRONT OF DRIVERS DOOR.HAVE HAD TO REPLACE ABOUT 20 FEET OF LINE ON MORE THAN THREE OCCASIONS.LATEST INCIDENT WAS REPLACING THE FUEL FILTER,THE FUEL LINES ARE CORRODED AND LEAKING FUEL.MY LOCAL DEALER HAS REFUSED SERVICE ON A VEHICLE MORE THAN 10 YEARS OLD.NOW WHAT?
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 reportsLOSS OF COOLANT NO VISIBLE LEAK, COOLANT IS SEEPING INTO HEADS DUE TO FAULTY CASTECH HEADS USED BY GM IN THE MANUFACTURING OF THESE TRUCKS. *TR
HAD A COMPLETE FAILURE OF THE BRAKING SYSTEM WHEN PULLING INTO A CONVENIENCE STORE. PEDAL WENT TO THE FLOOR AND BRAKE LIGHT CAME ON, BUT APPEARED TO HAVE A SMALL AMOUNT OF RESIDUAL BRAKING ON FRONT WHEELS. UPON INSPECTION THE LEFT REAR BRAKE LINE HAD RUSTED THROUGH. WENT STRAIGHT TO GARAGE FOR REPAIR AND WAS TOLD THAT ALL BRAKE …
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HAD A COMPLETE FAILURE OF THE BRAKING SYSTEM WHEN PULLING INTO A CONVENIENCE STORE. PEDAL WENT TO THE FLOOR AND BRAKE LIGHT CAME ON, BUT APPEARED TO HAVE A SMALL AMOUNT OF RESIDUAL BRAKING ON FRONT WHEELS. UPON INSPECTION THE LEFT REAR BRAKE LINE HAD RUSTED THROUGH. WENT STRAIGHT TO GARAGE FOR REPAIR AND WAS TOLD THAT ALL BRAKE LINES WERE IN DANGER OF RUSTING THROUGH IN SEVERAL SPOTS. ALSO ENTIRE UNDERCARRIAGE IS BADLY RUSTED AS TO ROTORS, SHOCKS AND SUCH. ACTUALLY HAD ALL ROTORS REPLACED ABOUT THREE YEARS AGO AT CHEVROLET DEALER IN ORDER FOR TRUCK TO PASS THE STATE INSPECTION. HAVE OTHER VEHICLES EVEN OLDER THAN THIS TRUCK WITH NO APPARENT PROBLEMS WITH RUST UNDER THEM. WAS TOLD BY GARAGE MECHANIC THAT HE HAS SEEN A VERY LARGE NUMBER OF CHEVY TRUCKS OF THIS VINTAGE WITH SAME PROBLEMS. IT'S A SHAME, BECAUSE THIS TRUCK LOOKS ALMOST NEW IN EVERY OTHER ASPECT.
GM RECALLED THIS VEHICLE IN 2006 DUE TO CORROSION OF FRONT ABS SPEED SENSOR (CHEVY RECALL #05068C: PRODUCT SAFETY - FRONT WHEEL SPEED SENSOR CORROSION). MY ABS ARE PULSING AT VERY LOW SPEED - STOP SIGNS/LIGHTS/PARKING ETC. THIS IS CHARACTERISTIC OF THE CORROSION ISSUE. I'VE BEEN TOLD I HAD THE REPAIR (I DON'T DOUBT IT - THERE…
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GM RECALLED THIS VEHICLE IN 2006 DUE TO CORROSION OF FRONT ABS SPEED SENSOR (CHEVY RECALL #05068C: PRODUCT SAFETY - FRONT WHEEL SPEED SENSOR CORROSION). MY ABS ARE PULSING AT VERY LOW SPEED - STOP SIGNS/LIGHTS/PARKING ETC. THIS IS CHARACTERISTIC OF THE CORROSION ISSUE. I'VE BEEN TOLD I HAD THE REPAIR (I DON'T DOUBT IT - THERE WERE TWO - ONE FOR REAR PARKING BRAKE AND ONE I DIDN'T REALLY RESEARCH - I JUST TOOK IT IN - I ASSUME THAT WAS THIS ISSUE - SENSOR CORROSION). I KNOW THE VEHICLE IS 13 YEARS OLD. HOWEVER, I'M THE ORIGINAL OWNER, AND IT HAS ONLY 87,000 MILES. IT WAS ALWAYS GARAGE KEPT. IT LIVED IN WI FOR ITS FIRST 11 YEARS, AND NOW RESIDES ON THE SOUTHERN OR COAST. MY QUESTION: ONCE AN OEM MAKES A SAFETY REPAIR UNDER RECALL, IS THERE AN OBLIGATION THAT IT SOLVES THE PROBLEM? OR IS IT THE USUAL 1 YEAR PARTS AND LABOR THING? THANKS! *TR
WHILE DRIVING DOWN A TWO LANE HIGHWAY, THE VEHICLE IN FRONT OF ME APPLIED HIS BRAKES FOR A DISABLED VEHICLE IN THE ROADWAY. I BEGAN TO PRESS MINE WHEN THEY WENT STRAIGHT TO THE FLOORBOARD. I BEGAN TO PUMP THE BRAKES QUICKLY HOPING THE SYSTEM WOULD SEND FLUID TO THE OTHER SET WHICH IT DID NOT. IN ORDER TO PREVENT IMPACTING THE VE…
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WHILE DRIVING DOWN A TWO LANE HIGHWAY, THE VEHICLE IN FRONT OF ME APPLIED HIS BRAKES FOR A DISABLED VEHICLE IN THE ROADWAY. I BEGAN TO PRESS MINE WHEN THEY WENT STRAIGHT TO THE FLOORBOARD. I BEGAN TO PUMP THE BRAKES QUICKLY HOPING THE SYSTEM WOULD SEND FLUID TO THE OTHER SET WHICH IT DID NOT. IN ORDER TO PREVENT IMPACTING THE VEHICLE IN FRONT OF ME OR THE DISABLED VEHICLE, I HAD TO SEND THE VEHICLE ACROSS ONCOMING TRAFFIC, LAUNCH OVER A ROADSIDE DITCH AND COME TO A STOP IN A CORN FIELD. THE FAILURE WAS A PINHOLE BLOWOUT UNDER THE DRIVERS SIDE DOOR WHERE THE BRAKE WERE COMPLETELY RUSTED THROUGH. *TR
I BOUGHT THIS SILVERADO NOV. 2000, WITHIN THE FIRST YEAR I HAD REPLACED MY LEFT FRONT DAY TIME RUNNING LIGHT. TO DATE I HAVE REPLACE THIS SAME LEFT FRONT DAYTIME RUNNING LIGHT NO LESS THAN 9 TIMES. MY WIFE HAS A SUBURBAN AND IT IS A 2009 AND WE HAVE REPLACED THE LEFT FRONT DAYTIME RUNNING LIGHT APPROX. 4 TIMES. YOU CAN NOT DR…
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I BOUGHT THIS SILVERADO NOV. 2000, WITHIN THE FIRST YEAR I HAD REPLACED MY LEFT FRONT DAY TIME RUNNING LIGHT. TO DATE I HAVE REPLACE THIS SAME LEFT FRONT DAYTIME RUNNING LIGHT NO LESS THAN 9 TIMES. MY WIFE HAS A SUBURBAN AND IT IS A 2009 AND WE HAVE REPLACED THE LEFT FRONT DAYTIME RUNNING LIGHT APPROX. 4 TIMES. YOU CAN NOT DRIVE DOWN A ROAD OR HIGHWAY AND LOOK AT AN ONCOMING CHEVY TRUCK/SUV WITHOUT SEEING A DAY TIME RUNNING LIGHT OUT. THERE HAS NEVER BEEN A NOTICE OR RECALL OF ANY TYPE. CHEVY IS GETTING AWAY WITH MURDER. PLEASE LOOK INTO THIS MATTER. THANK YOU. *TR
MY BRAKE LINES AND FUEL LINES ARE SO RUSTED I AM JUST WAITING FOR THE DAY THAT ONE OF THEM BREAKS. AND POSSIBLE KILLS SOMEONE. I JUST HOPE THAT IT WILL NOT HAPPEN BEFORE GM DOES SOMETHING ABOUT THIS PROBLEM. I AM HOLDING OFF REPLACING THE LINES TO SEE IF GM IS GOING TO RECALL THIS PROBLEM. I DONT USE THIS TRUCK FOR FEAR OF GETTI…
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MY BRAKE LINES AND FUEL LINES ARE SO RUSTED I AM JUST WAITING FOR THE DAY THAT ONE OF THEM BREAKS. AND POSSIBLE KILLS SOMEONE. I JUST HOPE THAT IT WILL NOT HAPPEN BEFORE GM DOES SOMETHING ABOUT THIS PROBLEM. I AM HOLDING OFF REPLACING THE LINES TO SEE IF GM IS GOING TO RECALL THIS PROBLEM. I DONT USE THIS TRUCK FOR FEAR OF GETTING INTO AND ACCIDENT!!!! *TR
I WAS STOPPED AT A TRAFFIC LIGHT WITH MY FOOT ON BRAKE AND HAD TO REACH INTO PASSENGER SEAT WHICH RESULTED IN ME APPLYING A LITTLE MORE PRESSURE ONTO MY BRAKE PEDAL. MY BRAKE PEDAL WENT TO FLOOR BOARD AND I KNEW SOMETHING WAS VERY WRONG. I PROCEEDED TO GO STRAIGHT HOME AND NOTICED MUCH LONGER STOPPING DISTANCES. I CHECKED UNDER …
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I WAS STOPPED AT A TRAFFIC LIGHT WITH MY FOOT ON BRAKE AND HAD TO REACH INTO PASSENGER SEAT WHICH RESULTED IN ME APPLYING A LITTLE MORE PRESSURE ONTO MY BRAKE PEDAL. MY BRAKE PEDAL WENT TO FLOOR BOARD AND I KNEW SOMETHING WAS VERY WRONG. I PROCEEDED TO GO STRAIGHT HOME AND NOTICED MUCH LONGER STOPPING DISTANCES. I CHECKED UNDER MY VEHICLE THE NEXT DAY AND SAW THAT MY BRAKE LINE WAS COMPLETELY RUSTED THROUGH. *TR
I WAS DRIVING 45 MPH DOWN THE ROAD WHEN A GROUP OF THREE DUCKS RAN INTO THE ROAD. I APPLIED THE BRAKES AS IN AN EMERGENCY AND THE LEFT FRONT BRAKE LINE BLEW OUT BECAUSE IT WAS MADE OF STEEL AND HAD RUSTED OUT. THE BRAKE PEDAL WENT TO THE FLOOR AND I RAN OVER THE DUCKS. I AM GLAD THAT IT WASN'T FOR A CAR OR PERSON THAT I HAD TO M…
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I WAS DRIVING 45 MPH DOWN THE ROAD WHEN A GROUP OF THREE DUCKS RAN INTO THE ROAD. I APPLIED THE BRAKES AS IN AN EMERGENCY AND THE LEFT FRONT BRAKE LINE BLEW OUT BECAUSE IT WAS MADE OF STEEL AND HAD RUSTED OUT. THE BRAKE PEDAL WENT TO THE FLOOR AND I RAN OVER THE DUCKS. I AM GLAD THAT IT WASN'T FOR A CAR OR PERSON THAT I HAD TO MAKE AN EMERGENCY STOP. *TR
AS I WAS COMING DOWN A HILL TOWARD STOPPED TRAFFIC I APPLIED MY BRAKES.THE BRAKE STARTED TO SLOW THE TRUCK THEN WENT ALL THE WAY TO THE FLOOR.TO AVOID THE STOPPED CAR IN FRONT OF ME I TURNED TOWARD THE SHOULDER OF THE RIGHT SIDE OF THE ROAD.I WAS ABLE TO NAVIGATE AROUND THE CAR AND STAY BETWEEN THE CAR AND A DRAIN RUNOFF ON THE …
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AS I WAS COMING DOWN A HILL TOWARD STOPPED TRAFFIC I APPLIED MY BRAKES.THE BRAKE STARTED TO SLOW THE TRUCK THEN WENT ALL THE WAY TO THE FLOOR.TO AVOID THE STOPPED CAR IN FRONT OF ME I TURNED TOWARD THE SHOULDER OF THE RIGHT SIDE OF THE ROAD.I WAS ABLE TO NAVIGATE AROUND THE CAR AND STAY BETWEEN THE CAR AND A DRAIN RUNOFF ON THE SHOULDER.I CONTINUED ON THE SHOULD STILL TRYING TO STOP I SPLIT BETWEEN A TELEPHONE POLE AND A TREE.I FINALLY CAME TO A STOPPED ABOUT 75FT AFTER THAT.I GOT OUT TO CHECK UNDER THE TRUCK AT EACH TIRE.THERE WAS NO FLUID.I PROCEEDED TO OPEN THE HOOD AND CHECK THE MASTER CYLINDER.IT WAS FULL.I WENT BACK UNDER THE DRIVERSIDE DOOR AND UNDER THE DOOR HINGES ON THE FRAME THE WAS BRAKE FLUID ALL OVER. *TR
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.