THIS FOR A CHEVROLET C1500 TRUCK, YEAR 2000. THE YOKE IN THE DIFFERENTIAL WON'T STAY TIGHT. IT HAS COME LOOSE TWICE. I HAVE HAD IT REPAIRED TWICE. LOOKS LIKE IT IS COMING LOOSE AGAIN. STARTS TO MAKE A WHINING SOUND WHEN IT STARTS TO GET LOOSE, ESPECIALLY WHEN GOING DOWNHILL. *NM
2000 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2000 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
489 reports with mileage · 125 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 237 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 162 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 33 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
614 reportsWHILE ATTEMPTING TO PARK MY VEHICLE I BEGAN COMING TO A STOP AND WAS GOING TO BEGIN BACKING UP, AT THIS TIME, THE ABS KICKED IN AND THE TRUCK LURCHED FORWARD HITTING A PARKED CAR. THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR AND THERE WAS NO PREVIOUS WARNING. IF SOMEONE HAD BEEN BETWEEN MY VEHICLE AND THE ONE HIT, THEY COULD…
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WHILE ATTEMPTING TO PARK MY VEHICLE I BEGAN COMING TO A STOP AND WAS GOING TO BEGIN BACKING UP, AT THIS TIME, THE ABS KICKED IN AND THE TRUCK LURCHED FORWARD HITTING A PARKED CAR. THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR AND THERE WAS NO PREVIOUS WARNING. IF SOMEONE HAD BEEN BETWEEN MY VEHICLE AND THE ONE HIT, THEY COULD HAVE BEEN KILLED. THE VEHICLE WAS TOWED FROM THE LOT TO THE DEALER. WAS TOLD TO CALL CUSTOMER SERVICE BY THE LOCAL DEALERSHIP. THE TRUCK HAD 84000 MILES AND BRAKES HAD ALL BEEN REPLACED 3 MONTHS EARLIER. I DO NOT FEEL SAFE DRIVING THIS TRUCK NOW. *JB
I HAVE A 2000 CHEVY TAHOE. THE VEHICLE WAS EMITTING AN ODOR OF GASOLINE AND LEAKING GASOLINE FROM THE GAS TANK. THE VEHICLE IS IN THE MECHANIC SHOP FOR SERVICE. THE PROBLEM AREA WAS LOCATED AND DETERMINED TO BE THE FUEL MODULE CONNECTOR LEAKING GAS. *NM
DRIVING NORTH ON GARDERSTATE PARKWAY THE BRAKE LIGHT OF MY 2000 CHEVY SILVERADO CAME ON. I EXITED PARKWAY AT NORTHFIELD EXIT AND I APPLIED MY BRAKES. THE BRAKE PEDAL FELT SOFT AND THE PEDAL WENT TO THE FLOOR. I WAS ABLE TO MAKE A LEFT TURN AT THE END OF THE EXIT RAMP. THE LIGHT AT TILTON ROAD TURNED RED I APPLIED BRAKES THE…
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DRIVING NORTH ON GARDERSTATE PARKWAY THE BRAKE LIGHT OF MY 2000 CHEVY SILVERADO CAME ON. I EXITED PARKWAY AT NORTHFIELD EXIT AND I APPLIED MY BRAKES. THE BRAKE PEDAL FELT SOFT AND THE PEDAL WENT TO THE FLOOR. I WAS ABLE TO MAKE A LEFT TURN AT THE END OF THE EXIT RAMP. THE LIGHT AT TILTON ROAD TURNED RED I APPLIED BRAKES THE PEDAL WENT TO THE FLOOR. THERE IS A SUNOCO STATION ON THE CORNER WHICH I COASTED INTO. I CHECKED UNDER THE HOOD FLUID LEVEL WAS BELOW THE MIN. LINE. I ADDED FLUID INTO THE RESERVOIR. I GOT BACK INTO THE TRUCK AND APPLIED MY BRAKES. PEDAL WENT TO THE FLOOR AGAIN. I LOOKED UNDER THE TRUCK AND NOTICED THERE WAS BRAKE FLUID RUNNING ONTO THE GROUND. NOTICED A PEP BOYS STORE ABOUT 1/2 OF A BLOCK DOWN THE ROAD. I WAITED TILL THERE WAS NO CARS COMING AND PROCEEDED OUT ONTO TILTON ROAD TOWARD PEP BOYS. DOWN SHIFTED AND APPLIED BRAKE PEDAL AS I APPROACHED STORE. THEY CHECKED THE BRAKING SYSTEM AND INDICATED THAT A BRAKE LINE WAS LEAKING FLUID. MONDAY THEY REPAIRED THE TRUCK BY REPLACING ABOUT A FIVE (5) FOOT SECTION OF BRAKE LINE AT THE TUNE OF $262.52 WOW. I DO HAVE THE OLD SECTION OF BRAKE LINE THAT WAS REMOVED. THE OLD SECTION OF BRAKE LINE IS SO HEAVILY RUSTED THE SHOP INDICATED IT WAS VERY UNUSUAL. WHEN I GOT HOME I LOOKED AT THE REPAIR AND THE REST OF THE LINE STILL IN THE TRUCK AND I AM WORRIED ABOUT CONDITION OF BRAKE LINES AND THE EXCESSIVE RUST THAT EXIST. I'M WORRIED THAT THERE MAY BE ANOTHER LEAK,RESULT MIGHT BE THAT WE ARE NOT AS LUCKY THE NEXT TIME. THE PARKWAY IS A 65 MPH ROAD AND IF I WOULD HAVE HAD TO STOP VERY FAST DOING THAT SPEED I TRULY BELIEVE I WOULD NEVER HAVE BEEN ABLE TO STOP WITHOUT INJURIES. I HAVE ALWAYS OWNED CHEVY'S AND I KEPT THEM FOR GENERALLY 9 TO 10 YEARS AND I HAVE NEVER HAD A BRAKE LINE RUST OUT AS DID MY 2000 CHEVY TRUCK. I HOPE THAT THIS MATTER CAN BE INVESTIGATED. THANK YOU VERY MUCH FOR TIME SPENT IN READING MY LONG DESCRIPTION OF THIS OCCURRENCE. EDWARD R GLASER. *NM
WHEN GETTING MY 2000 CHEVY TRUCK INSPECTED, IT FAILED DUE TO THE PARKING BRAKE NOT HOLDING. CURIOUS I WENT TO SEVERAL INSPECTION STATION AND ASKED FOR AN INSPECTION. THE FOUR SHOPS I APPROACHED ALL ASKED IF I HAD MY PARKING BRAKE FIXED BEFORE THEY WOULD INSPECT IT. WHEN SPEAKING TO A MORITZ CHEVY (IN FT. WORTH, TX) DEALERSHIP…
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WHEN GETTING MY 2000 CHEVY TRUCK INSPECTED, IT FAILED DUE TO THE PARKING BRAKE NOT HOLDING. CURIOUS I WENT TO SEVERAL INSPECTION STATION AND ASKED FOR AN INSPECTION. THE FOUR SHOPS I APPROACHED ALL ASKED IF I HAD MY PARKING BRAKE FIXED BEFORE THEY WOULD INSPECT IT. WHEN SPEAKING TO A MORITZ CHEVY (IN FT. WORTH, TX) DEALERSHIP, I WAS TOLD THAT IF YOU DON'T USE THE PARKING BRAKE IT WILL SHIFT AND NOT WORK. AND WORSE THEY SAID IT COULD RUB THE OTHER ROTORS AND EVENTUALLY NEED REPLACING. ALL THIS FROM SOMETHING THAT IS NEVER USED IN THE CAR. SHOULD I HAVE THE AIR BAG INSPECTED SINCE I NEVER USE IT? HOW MANY PEOPLE HAVE BEEN HURT OR WORSE? EVERYONE APPARENTLY KNOWS THERE IS SOMETHING WRONG WITH THE PARKING BRAKE EXCEPT FOR CHEVY. WHY IS THAT? HOW MANY PEOPLE HAVE TO DIE BEFORE THEY WILL LISTEN? *JB
EMERGENCY/PARKING BRAKE SHOES WORN COMPLETELY OUT. 2000 CHEVY 1500 PICKUP TRUCK HAS FEW MILES BUT DEALER REFUSED TO FIX. DEALERS DO ADMIT IT IS A DESIGN DEFECT THAT ALLOWS THE SHOES TO RUB WHILE VEHICLE IS DRIVEN WEARING OUT THE SHOES. THEY HAVE A 'REDESIGNED PART' FOR REPLACEMENT. SINCE THE EMERGENCY BRAKES SHOULD NEVER ENG…
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EMERGENCY/PARKING BRAKE SHOES WORN COMPLETELY OUT. 2000 CHEVY 1500 PICKUP TRUCK HAS FEW MILES BUT DEALER REFUSED TO FIX. DEALERS DO ADMIT IT IS A DESIGN DEFECT THAT ALLOWS THE SHOES TO RUB WHILE VEHICLE IS DRIVEN WEARING OUT THE SHOES. THEY HAVE A 'REDESIGNED PART' FOR REPLACEMENT. SINCE THE EMERGENCY BRAKES SHOULD NEVER ENGAGE WHILE IN MOTION THEY SHOULD LAST FOREVER AND ALWAYS BE FUNCTIONAL IF EMERGENCY/PARKING BRAKE IS NEEDED. THE COST TO REPLACE WAS SEVERAL HUNDRED DOLLARS BUT THAT ISN'T THE REAL ISSUE. THE PROBLEM IS THAT THERE ARE PROBABLY MILLIONS OF VEHICLES OUT THERE WITH OWNERS THAT ASSUME THE BRAKE IS ENGAGE AND WORKING PROPERLY WHILE GM KNOWS THERE IS A PROBLEM BUT APPARENTLY IS WILLING TO RISK LIVES TO PREVENT A RECALL. THIS LEAVE THE OWNERS AND THEIR CHILDREN NOT TO MENTION ANYONE ELSE NEAR THE VEHICLE AT RISK OF DEATH OR INJURY WHEN THE BRAKE IS NEEDED AND DOESN'T DO IT'S JOB. *JB
AFTER TRAVELING ABOUT 350 MILES ON I-95 & I-26 WE EXPERIENCED A BLOWOUT ON THE REAR TIRE. IT DID 1300.00 IN BODY DAMAGE TO OUR 2000 SILVERADO 1500 P/U'S REAR FENDER. AFTER REPLACING THE TIRE WITH THE SPARE WE CONTINUED TO OUR DESTINATION WHERE WE REPLACED ALL 4 TIRES WITH NEW ONES. THERE WAS STILL APPROX 8000 MILES LEFT ON TH…
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AFTER TRAVELING ABOUT 350 MILES ON I-95 & I-26 WE EXPERIENCED A BLOWOUT ON THE REAR TIRE. IT DID 1300.00 IN BODY DAMAGE TO OUR 2000 SILVERADO 1500 P/U'S REAR FENDER. AFTER REPLACING THE TIRE WITH THE SPARE WE CONTINUED TO OUR DESTINATION WHERE WE REPLACED ALL 4 TIRES WITH NEW ONES. THERE WAS STILL APPROX 8000 MILES LEFT ON THE WARRANTY, BUT WE PURCHASED A DIFFERENT BRAND. WE SAVED THE DEFECTIVE TIRE AND SENT IT TO THE MANUFACTURER WHO CLAIMED IT WAS ROAD HAZARD DAMAGE. WE DID NOT ENCOUNTER ANY ROAD HAZARD AND MAINTAINED THE CORRECT AIR PRESSURE AND TIRE ROTATION SCHEDULE. *NM
DT*: THE CONTACT STATED THE REAR BRAKE ROTORS WERE REPLACED DUE TO RUST AFTER ONLY 14,000 MILES. THE PROBLEM APPEARED ON THE FRONT ROTORS AT 38,000 MILES AND THOSE WERE ALSO REPLACED. THE PROBLEM WAS NOTICED BECAUSE THE ABS LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A SERVICE DEALER FOR REPLACEMENT OF THE BRAKE ROTORS AND P…
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DT*: THE CONTACT STATED THE REAR BRAKE ROTORS WERE REPLACED DUE TO RUST AFTER ONLY 14,000 MILES. THE PROBLEM APPEARED ON THE FRONT ROTORS AT 38,000 MILES AND THOSE WERE ALSO REPLACED. THE PROBLEM WAS NOTICED BECAUSE THE ABS LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A SERVICE DEALER FOR REPLACEMENT OF THE BRAKE ROTORS AND PADS ON BOTH OCCASIONS. THE RUST FIRST APPEARED NEAR THE AXEL OF THE ROTOR AND WORKED ITS WAY TOWARD THE OUTSIDE. THE RUST WAS ONLY PRESENT ON THE BRAKING SURFACE.
2000 SILVERADO 1500 WITH 70,500 MILES JULY/05 MY BRAKES STATED TO FEEL LIKE I ONLY HAD 70% OF MY BRAKING CAPACITY. IT DOES NOT MATTER WHETHER I STOMP ON THE BRAKE OR BRAKE WITH INCREASING PRESSURE,THE ANTILOCK WILL NOT ENGAGE NOR WILL THE TIRES LOCK UP. I REPLACED ALL 4 ROTORS AND PADS (NON OE @ 62,500 MILES). THE LACK OF BRAKI…
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2000 SILVERADO 1500 WITH 70,500 MILES JULY/05 MY BRAKES STATED TO FEEL LIKE I ONLY HAD 70% OF MY BRAKING CAPACITY. IT DOES NOT MATTER WHETHER I STOMP ON THE BRAKE OR BRAKE WITH INCREASING PRESSURE,THE ANTILOCK WILL NOT ENGAGE NOR WILL THE TIRES LOCK UP. I REPLACED ALL 4 ROTORS AND PADS (NON OE @ 62,500 MILES). THE LACK OF BRAKING WAS STILL PRESENT. NEXT I REPLACED THE MASTER CYLINDER WHICH HAS NOT SOLVED THE PROBLEM. I JUST HAD THE DEALER LOOK AT THE SYSTEM, THEY NOTED THE REAR PADS WERE WORN (AFTER 8,000 MILES). THE DEALERSHIP ALSO SAID THE NON OE PADS WERE PROBABLY THE CAUSE OF THE LACK OF BRAKING. MY CONCERN WAS THE FACT THAT THE LACK OF BRAKING STARTED WHEN THE OE PADS WERE STILL ON THE TRUCK. *NM
DT*: THE CONTACT STATED WHILE THE BRAKES WERE APPLIED AT ANY SPEED, THE ABS ENGAGED. WHEN THE VEHICLE REACHES 5 TO 10MPH, THE BRAKES MADE GROANING NOISES AND THERE WAS AN EXTENDED STOPPING DISTANCE. THERE IS A NHTSA RECALL, 05V379000, REGARDING THE ANTI-LOCK BRAKES. THE VIN WAS NOT INCLUDED IN THE RECALL. THE MANUFACTURER W…
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DT*: THE CONTACT STATED WHILE THE BRAKES WERE APPLIED AT ANY SPEED, THE ABS ENGAGED. WHEN THE VEHICLE REACHES 5 TO 10MPH, THE BRAKES MADE GROANING NOISES AND THERE WAS AN EXTENDED STOPPING DISTANCE. THERE IS A NHTSA RECALL, 05V379000, REGARDING THE ANTI-LOCK BRAKES. THE VIN WAS NOT INCLUDED IN THE RECALL. THE MANUFACTURER WAS ALERTED, BUT THE VEHICLE HAS NOT BEEN INSPECTED.
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.
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