IllustrationSECOND TIME I LOST ALL BRAKES IN THIS VEHICLE. LOST ALL BRAKES DUE TO ROTTED LINES. *TR
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
Service Brakes complaints
133 reportsTL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE BRAKE PEDAL TRAVELED TO THE FLOOR WHEN IT WAS DEPRESSED. AFTER INSPECTING THE VEHICLE, THE CONTACT NOTICED BRAKE FLUID LEAKING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING, BUT WAS NOT REPAIRED. THE MANUFACTURER WAS NOT …
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE BRAKE PEDAL TRAVELED TO THE FLOOR WHEN IT WAS DEPRESSED. AFTER INSPECTING THE VEHICLE, THE CONTACT NOTICED BRAKE FLUID LEAKING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING, BUT WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 130,000.
OWNED THE VEHICLE SINCE NEW. VEHICLE NOW HAS APPROXIMATELY 81,000 MILES. EACH TIME THE BRAKES NEEDED REPLACEMENT THE ROTORS NEEDED TO BE REPLACED DUE TO "EXCESSIVE PITTING AND CORROSION" THIS WAS DONE TWICE DURING THE YEARS OWNED. DURING THE MOST RECENT BRAKE SERVICE I WAS INFORMED AND SHOWN THAT THE BRAKE LINES WERE SO BADLY CO…
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OWNED THE VEHICLE SINCE NEW. VEHICLE NOW HAS APPROXIMATELY 81,000 MILES. EACH TIME THE BRAKES NEEDED REPLACEMENT THE ROTORS NEEDED TO BE REPLACED DUE TO "EXCESSIVE PITTING AND CORROSION" THIS WAS DONE TWICE DURING THE YEARS OWNED. DURING THE MOST RECENT BRAKE SERVICE I WAS INFORMED AND SHOWN THAT THE BRAKE LINES WERE SO BADLY CORRODED AS TO BE A HAZARD AND THAT THEY COULD FAIL AT ANY MOMENT. I BELIEVE THIS IS DUE TO INFERIOR MATERIALS BEING INCORPORATED INTO THE VEHICLE AT THE TIME OF MANUFACTURE. A RECALL SHOULD BE ISSUED AS THE DANGERS OF SUDDEN UNEXPECTED BRAKE FAILURE ARE SIGNIFICANT. *TR
THE BRAKE'S LOST PRESSURE AND ENDED UP REAR ENDING THE CAR IN FRONT OF ME. AFTER FURTHER EXAMINATION ALL THE BRAKES LINES ARE COMPLETELY RUSTED AND AND ONE OF THE LINES GAVE OUT COMPLETELY WHICH LEAD TO THE LOSS OF PRESSURE AND CAUSE OF WRECK. *TR
AS I WAS LEAVING MY DRIVEWAY, WHEN I BRAKED, MY TRUCK WOULD NOT STOP, MADE A LOUD SOUND, BUT AFTER PUMPING THE BRAKE, IT FINALLY STOPPED. I HAD NEW BRAKES, PLUS ROTORS AND CALIBERS PUT ON TRUCK BEFORE ALL OF THIS HAPPENED, I FIGURED THEY DID SOMETHING WRONG, BUT TOOK IT BACK TO GOODYEAR AND THEY ASSURED ME THE BRAKES WERE OK, A…
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AS I WAS LEAVING MY DRIVEWAY, WHEN I BRAKED, MY TRUCK WOULD NOT STOP, MADE A LOUD SOUND, BUT AFTER PUMPING THE BRAKE, IT FINALLY STOPPED. I HAD NEW BRAKES, PLUS ROTORS AND CALIBERS PUT ON TRUCK BEFORE ALL OF THIS HAPPENED, I FIGURED THEY DID SOMETHING WRONG, BUT TOOK IT BACK TO GOODYEAR AND THEY ASSURED ME THE BRAKES WERE OK, AND THAT IT IS THE ABS. I ALMOST BROADSIDED ANOTHER VEHICLE. I NOTICED THAT THERE IS A RECALL ON THESE IN CERTAIN STATES, BUT MY STATE IS NOT LISTED IN THE RECALL. I CAN'T UNDERSTAND THIS BECAUSE IF MY ABS FAILS, THEY SHOULD INCLUDE ALL THE STATES IN THE RECALL, AS MINE EVIDENTLY NEEDS REPLACED. I WOULD LIKE TO KNOW WHY THIS IS, PLEASE, BECAUSE I THINK THAT IT IS AN EXPENSIVE FIX AND I THINK GM SHOULD REPLACE IT. I AM AFRAID TO DRIVE MY TRUCK NOW AND NEED TO RESOLVE THIS COMPLAINT AS I DO NEED TO GET BACK TO DRIVING IT. TKS *TR
WHILE PULLING BOAT OUT OF WATER AT MARINA,PULLED TRUCK UP RAMP TO PARKING LOT AND WHEN MY BUDDY HIT THE BRAKES,THE BRAKE PEDAL WENT TO THE FLOORBOARD. WHEN WE LOOKED UNDER DRIVERS SIDE DOOR, WE COULD SEE BREAK FLUID LEAKING OUT OF BRAKE LINE. TOOK TO MECHANIC ,LINES ALL RUSTED OUT. CHECKED MY LINES ON MY 2001 CHEVY SILVERADO WHE…
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WHILE PULLING BOAT OUT OF WATER AT MARINA,PULLED TRUCK UP RAMP TO PARKING LOT AND WHEN MY BUDDY HIT THE BRAKES,THE BRAKE PEDAL WENT TO THE FLOORBOARD. WHEN WE LOOKED UNDER DRIVERS SIDE DOOR, WE COULD SEE BREAK FLUID LEAKING OUT OF BRAKE LINE. TOOK TO MECHANIC ,LINES ALL RUSTED OUT. CHECKED MY LINES ON MY 2001 CHEVY SILVERADO WHEN I GOT HOME,SAME PROBLEM, ALL RUSTED. TRUCK IS PARKED UNTIL RECALL. *TR
BRAKES FAILED. BRAKE LINES BROKE DUE TO RUST. *TR
THE BRAKE PEDAL HAS BEEN SOFT FOR QUITE A WHILE. DURING A PA. STATE SAFETY INSP. IT WAS DISCOVERED BY INSPECTION MECHANIC THAT THE BRAKE LINES WERE LEAKING IN MULTIPLE PLACES. HE WAS GOING TO REPLACE ONLY THE AFFECTED AREA AT FIRST BUT THEN DISCOVERED THE LINES WERE LEAKING IN MULTIPLE PLACES. THEREFORE ALL THE LINES HAD TO BE…
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THE BRAKE PEDAL HAS BEEN SOFT FOR QUITE A WHILE. DURING A PA. STATE SAFETY INSP. IT WAS DISCOVERED BY INSPECTION MECHANIC THAT THE BRAKE LINES WERE LEAKING IN MULTIPLE PLACES. HE WAS GOING TO REPLACE ONLY THE AFFECTED AREA AT FIRST BUT THEN DISCOVERED THE LINES WERE LEAKING IN MULTIPLE PLACES. THEREFORE ALL THE LINES HAD TO BE REPLACED. *TR
I WAS CHANGING THE OIL ON MY 2001 SILVERADO 1500 LS WHICH HAS ABOUT 115,000 MILES IN MY DRIVEWAY. WHILE I WAS UNDER THE CAR, I NOTICED THAT THE BRAKE LINES (AROUND THE ABS UNIT) ALONG SIDE THE FRAME RAILS ON THE DRIVER SIDE IS BADLY CORRODED. I MAY WELL HAVE TO CHANGE THE LINES ASAP AS IT IS HAZARD TO DRIVE THE VEHICLE ON THE RO…
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I WAS CHANGING THE OIL ON MY 2001 SILVERADO 1500 LS WHICH HAS ABOUT 115,000 MILES IN MY DRIVEWAY. WHILE I WAS UNDER THE CAR, I NOTICED THAT THE BRAKE LINES (AROUND THE ABS UNIT) ALONG SIDE THE FRAME RAILS ON THE DRIVER SIDE IS BADLY CORRODED. I MAY WELL HAVE TO CHANGE THE LINES ASAP AS IT IS HAZARD TO DRIVE THE VEHICLE ON THE ROAD. IT MAY WELL BE FATAL FOR ME OR FOR ANYONE ELSE ON THE ROAD IN CASE THE BRAKE LINES BURST WHEN I APPLY THE BRAKE. DID NOT EXPECT THIS FROM GM. I HAVE TAKEN VERY GOOD CARE OF THE TRUCK SO FAR AND THIS IS WHAT I GET BACK - GLARING ISSUES WHICH CAN GET ANYONE INJURED SERIOUSLY/KILLED. PLEASE DO SOMETHING ABOUT THIS AND GET GM TO FIX THIS FOR ALL AFFECTED CONSUMERS BEFORE A WAKE UP CALL IN THE FORM OF A FATAL ACCIDENT. *JS
I LEFT MY PARKING AND THE BRAKE LIGHT CAME ON IN THE DASH. I NOTICED A VERY SPONGY FEEL SO PULLED OVER AND FOUND THAT HALF OF MY FLUID WAS MISSING. I INSPECTED UNDER THE VEHICLE AND NOTICED THAT ALL THE BRAKE LINES WERE EXTREMELY CORRODED, EVEN IN THE ENGINE COMPARTMENT. BASED ON THIS INSPECTION, DESPITE NOT BEING ABLE TO FIND A…
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I LEFT MY PARKING AND THE BRAKE LIGHT CAME ON IN THE DASH. I NOTICED A VERY SPONGY FEEL SO PULLED OVER AND FOUND THAT HALF OF MY FLUID WAS MISSING. I INSPECTED UNDER THE VEHICLE AND NOTICED THAT ALL THE BRAKE LINES WERE EXTREMELY CORRODED, EVEN IN THE ENGINE COMPARTMENT. BASED ON THIS INSPECTION, DESPITE NOT BEING ABLE TO FIND A "SMOKING GUN" LEAK, IT IS VERY APPARENT THAT THE CORRODED BRAKE LINES ARE THE CAUSE OF THE LEAK. FORTUNATELY, I WAS ABLE TO PULL OVER WITH BRAKE FLUID STILL LEFT IN THE SYSTEM. IT IS RIDICULOUS THAT SUCH A CRITICAL SAFETY ITEM (BRAKES) SHOULD HAVE A CORROSION PROBLEM TO THE DEGREE THAT THIS DOES. *JS
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.