NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
614 reports111,000 miles · Jun 28, 2011
Electrical System
MY TRUCK HAS A TOW/HAUL FEATURE WHERE YOU PUSH A BUTTON TO TURN THE FEATURE ON AND OFF. I BOUGHT A TRAVEL TRAILER, I PUSHED THE BUTTON AND IT DIDN'T COME ON. I RESEARCHED THE PROBLEM AND FOUND MANY OTHER COMPLAINTS WITH THE SAME PROBLEM. I FOUND OUT THAT THERE IS A ORANGE WIRE IN THE STEERING COLUMN THAT TEARS. EVERY PERSON THA…
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MY TRUCK HAS A TOW/HAUL FEATURE WHERE YOU PUSH A BUTTON TO TURN THE FEATURE ON AND OFF. I BOUGHT A TRAVEL TRAILER, I PUSHED THE BUTTON AND IT DIDN'T COME ON. I RESEARCHED THE PROBLEM AND FOUND MANY OTHER COMPLAINTS WITH THE SAME PROBLEM. I FOUND OUT THAT THERE IS A ORANGE WIRE IN THE STEERING COLUMN THAT TEARS. EVERY PERSON THAT I SAW WITH THE PROBLEM HAD THAT ORANGE WIRE BROKEN, I OPENED UP MY STEERING COLUMN AND SURE ENOUGH THAT WAS THE PROBLEM. THERE IS A BRACE WHERE THE WIRE FITS IN. THE BRACE HAD CUT THE WIRE. I TRIED TO FIX IT BUT THE WIRE IS SO SMALL I COULDN'T. *TR
NHTSA ODI #10409216
Mileage unknown · Jun 23, 2011
Service Brakes, Hydraulic
TL- THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE WOULD NOT COME TO A SMOOTH STOP WITHOUT THE ABS SYSTEM BEING ACTIVATED. THE CONTACT STATED THAT THE FAILURE ALSO EXTENDED THE STOPPING DISTANCE. THE CONTACTBELEIVED THE FAILURE TO BE A SAFETY ISSUE BECAUSE OF THE INCREASE IN STOPPING DISTAN…
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TL- THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE VEHICLE WOULD NOT COME TO A SMOOTH STOP WITHOUT THE ABS SYSTEM BEING ACTIVATED. THE CONTACT STATED THAT THE FAILURE ALSO EXTENDED THE STOPPING DISTANCE. THE CONTACTBELEIVED THE FAILURE TO BE A SAFETY ISSUE BECAUSE OF THE INCREASE IN STOPPING DISTANCE. THE FAILURE WAS REPAIRED TWICE BEFORE BY THE MANUFACTURER BUT CONTINUED TO FAIL. THE FAILURE MILEAGE WAS UNKNOWN AND THE CURRENT MILEAGE WAS 80,500.
NHTSA ODI #10408705
139,000 miles · Jun 20, 2011
Service Brakes, Hydraulic
I WAS BRAKING WHILE EXITING MY LOCAL EXIT ON THE HIGHWAY WHEN HYDRAULIC BRAKE PRESSURE WAS SUDDENLY AND COMPLETELY LOST, SENDING THE PEDAL TO THE FLOOR. UNABLE TO STOP IN TIME, I WENT THROUGH THE STOP SIGN AT THE END OF THE RAMP. LUCKILY THERE WAS NO ONCOMING TRAFFIC AND I WAS ABLE TO TAKE THE TURN AND BRING THE VEHICLE TO A S…
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I WAS BRAKING WHILE EXITING MY LOCAL EXIT ON THE HIGHWAY WHEN HYDRAULIC BRAKE PRESSURE WAS SUDDENLY AND COMPLETELY LOST, SENDING THE PEDAL TO THE FLOOR. UNABLE TO STOP IN TIME, I WENT THROUGH THE STOP SIGN AT THE END OF THE RAMP. LUCKILY THERE WAS NO ONCOMING TRAFFIC AND I WAS ABLE TO TAKE THE TURN AND BRING THE VEHICLE TO A STOP ON THE SIDE OF THE ROAD. AFTER GETTING THE VEHICLE HOME ON THE EMERGENCY BRAKE, IT WAS OBVIOUS WHAT HAPPENED, A HYDRAULIC FITTING RUPTURED FROM CORROSION/RUST, WHICH DEPRESSURIZED THE BRAKE SYSTEM. AFTER REPLACING THE FITTING, A COMPLETELY SEPARATE BRAKE LINE BLEW OUT IN A DIFFERENT LOCATION WHICH WOULD/COULD HAVE CAUSED A SEPARATE INCIDENT. IT IS CLEAR THAT EVERY BRAKE LINE AND FITTING NEEDS TO BE CHANGED BECAUSE OF CORROSION/RUST. *TT
NHTSA ODI #10407583
94,000 miles · Jun 11, 2011
Service Brakes, Hydraulic
RUSTED BRAKE LINE LEAKING BRAKE FLUID CAUSIN REAR BRAKE FAILURE. *TR
NHTSA ODI #10405980
110,000 miles · May 29, 2011
Structure
2000 Z71 3 DOOR BRAKE LINE FAILURE DUE TO EXCESSIVE FRAME ROTTING THE LOAD LIMITER THAT HITS THE AXLE BECAME WEEK AND ROTTED IT TILTED AND WAS ABLE TO COME IN CONTACT WITH THE BRAKE LINE LEAF SPRING BRACKET BROKE WENT THROUGH THE BED CROSS MEMBERS RUSTED OFF EXCESSIVE TILT IN TRUCK CAUSED REAR END TO GO ROCKER HAVE ALREADY BEEN…
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2000 Z71 3 DOOR BRAKE LINE FAILURE DUE TO EXCESSIVE FRAME ROTTING THE LOAD LIMITER THAT HITS THE AXLE BECAME WEEK AND ROTTED IT TILTED AND WAS ABLE TO COME IN CONTACT WITH THE BRAKE LINE LEAF SPRING BRACKET BROKE WENT THROUGH THE BED CROSS MEMBERS RUSTED OFF EXCESSIVE TILT IN TRUCK CAUSED REAR END TO GO ROCKER HAVE ALREADY BEEN REDONE ONCE BED TRUCK BED IS RUSTED WHEEL WELLS AND ON THE BED ITSELF TO THE POINT IT NOT WORTH FIXING FRAME HAD BEEN PATCHED BEFORE I GOT THE TRUCK AND IT ROTTING AROUND THE PATCHES IV PURCHASED A USED FRAME OF ANOTHER TRUCK BASICALLY IM TREATING THIS TRUCK LIKE AN OLD CLASSIC IT IN NEED OF FULL RESTORATION AND IT REALLY SHOULD NOT BE THE TRUCK IS ONLY 10 YEARS OLD MY 1989 SCOTTSDALE DIDN'T HAVE A 1/16 TH THE ISSUES AT 20 YEARS OLD WHEN I SOLD IT. *TR
NHTSA ODI #10403675
40,000 miles · May 26, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHEN THE CONTACT WAS DRIVING APPROXIMATELY 30 MPH, THE ABS WARNING INDICATOR UNEXPECTEDLY ILLUMINATED AND WHEN THE BRAKES WERE ENGAGED THE PEDAL TRAVELED TO THE FLOOR. THERE WAS AN EXTENSIVE DELAYED RESPONSE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TEST…
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TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. WHEN THE CONTACT WAS DRIVING APPROXIMATELY 30 MPH, THE ABS WARNING INDICATOR UNEXPECTEDLY ILLUMINATED AND WHEN THE BRAKES WERE ENGAGED THE PEDAL TRAVELED TO THE FLOOR. THERE WAS AN EXTENSIVE DELAYED RESPONSE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING AND TO BE REPAIRED; HOWEVER, THE SIMILAR FAILURE RECURRED. THE CONTACT DISCOVERED THERE WERE TWO RECALLS RELATED TO THE DEFECT ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBERS 00V055000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK), AND 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE MANUFACTURER WAS NOTIFIED AND INFORMED HIM THAT THE VIN WAS NOT INCLUDED IN THE RECALLS. THE VEHICLE WAS NOT REPAIRED FOR THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 40,000.
NHTSA ODI #10402849
Mileage unknown · May 2, 2011
Fuel System, Other
I JUST READ YOU ARE INVESTIGATING GM SUVS FOR DEFECTIVE GAS GAUGES. I HAVE A YEAR 2000 CHEVY SILVERADO AND THE GAS GAUGE HAS READ ERRONEOUSLY FOR THE PAST SIX OR SEVEN YEARS. I HAVE RUN OUT OF GAS SEVERAL TIMES,BUT HAVE NEVER HAD THE PROBLEM REPAIRED BECAUSE THE DEALER WANTS TO CHARGE ME AN ABSURD AMOUNT. I BELIEVE ITS A DESIGN …
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I JUST READ YOU ARE INVESTIGATING GM SUVS FOR DEFECTIVE GAS GAUGES. I HAVE A YEAR 2000 CHEVY SILVERADO AND THE GAS GAUGE HAS READ ERRONEOUSLY FOR THE PAST SIX OR SEVEN YEARS. I HAVE RUN OUT OF GAS SEVERAL TIMES,BUT HAVE NEVER HAD THE PROBLEM REPAIRED BECAUSE THE DEALER WANTS TO CHARGE ME AN ABSURD AMOUNT. I BELIEVE ITS A DESIGN FLAW THEY SHOULD REPAIR FOR FREE. I WOULD RECOMMEND YOU EXPAND YOUR INVESTIGATION TO INCLUDE GM PICKUPS BACK TO AT LEAST THE YEAR 2000. *TR
NHTSA ODI #10398623
120,809 miles · Apr 30, 2011
Service Brakes, Hydraulic
SUDDEN TOTAL BRAKE FAILURE ON 2000 CHEVROLET SILVERADO 1500 PICK UP TRUCK. BRAKE LINES RUSTED AND LEAKING. REPAIRED REAR BRAKE LINE THAT WAS SEPARATED IN 2010. ALL LINES APPEAR TO BE SEVERELY CORRODED. *TR
NHTSA ODI #10398340
100,000 miles · Apr 19, 2011
Service Brakes, Hydraulic
I HAD COMPLETE FAILURE OF MY 2000 SILVERADO 1500 2WD EXT CAB BRAKE LINES . *TR
NHTSA ODI #10396795
118,000 miles · Apr 12, 2011
Service Brakes, HydraulicSuspension
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STARTED THE IGNITION, AND WHEN PRESSURE WAS APPLIED TO THE BRAKE HIS FOOT IMMEDIATELY TRAVELED TO THE FLOOR WITHOUT A RESPONSE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE THEY STATED THAT THE BRAKE LINE FAILED DUE TO RUST CORROSION. THE VEHICLE WAS REPA…
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TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT STARTED THE IGNITION, AND WHEN PRESSURE WAS APPLIED TO THE BRAKE HIS FOOT IMMEDIATELY TRAVELED TO THE FLOOR WITHOUT A RESPONSE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE THEY STATED THAT THE BRAKE LINE FAILED DUE TO RUST CORROSION. THE VEHICLE WAS REPAIRED. IN ADDITION, THE REAR SHOCK SUPPORT BEAM FRACTURED, AND THE CONTACT WAS UNSUCCESSFUL IN LOCATING THE PART FOR THE REPAIR. THE FAILURE MILEAGE WAS 118,000.
NHTSA ODI #10395569
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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