NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
237 reportsClear category filter74,428 miles · Feb 12, 2006
Service Brakes, Hydraulic
BRAKES BEGAN TO PULSATE BETWEEN 3 MPH AND 5 MPH WHICH CAUSED THE VEHICLE NOT TO SLOW WHEN COMING TO A COMPLETE STOP; STOP LIGHTS, STOP SIGNS, ETC. FAILURE OF THE ABS CAUSED MYSELF TO ROLL THROUGH A STOP, INTO TRAFFIC, AND INTO THE DITCH. A TEST FOR LOW SPEED ANTI-LOCK OPERATION WAS DONE. RESULTS SHOWED PROBLEM TO BE FAULTY ABS…
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BRAKES BEGAN TO PULSATE BETWEEN 3 MPH AND 5 MPH WHICH CAUSED THE VEHICLE NOT TO SLOW WHEN COMING TO A COMPLETE STOP; STOP LIGHTS, STOP SIGNS, ETC. FAILURE OF THE ABS CAUSED MYSELF TO ROLL THROUGH A STOP, INTO TRAFFIC, AND INTO THE DITCH. A TEST FOR LOW SPEED ANTI-LOCK OPERATION WAS DONE. RESULTS SHOWED PROBLEM TO BE FAULTY ABS SYSTEM. ( NOTED TO BE MANUFACTURE DEFECT PER NEWSPAPER ARTICLE MILWAUKEE JOURNAL SENTINEL ). PROBLEM WAS CORRECTED BY REPLACING THE FRONT WHEEL HUB ASSEMBLIES. *JB
NHTSA ODI #10150062
Mileage unknown · Jan 7, 2006
Fuel System, OtherService Brakes, Hydraulic
2000 CHEVROLET SILVERADO 1500 PICKUP 12/30/05 I CALLED TO MAKE AN APPOINTMENT FOR THE ABS RECALL. 12/31 THE ABS LIGHT ON THE DASH CAME ON. THE DEALER COMPLETED THE RECALL WORK AND STATED THE ABS LIGHT WAS AN "ACTIVE FAILURE" CODE IN THE COMPUTER AND WAS NOT RELATED TO THE RECALL. REPAIR OF THIS FAULT WAS ESTIMATED $1,400-1900. …
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2000 CHEVROLET SILVERADO 1500 PICKUP 12/30/05 I CALLED TO MAKE AN APPOINTMENT FOR THE ABS RECALL. 12/31 THE ABS LIGHT ON THE DASH CAME ON. THE DEALER COMPLETED THE RECALL WORK AND STATED THE ABS LIGHT WAS AN "ACTIVE FAILURE" CODE IN THE COMPUTER AND WAS NOT RELATED TO THE RECALL. REPAIR OF THIS FAULT WAS ESTIMATED $1,400-1900. I HAVE ALSO PAID TO HAVE THE FUEL GAUGE FIXED. IT WENT FROM EMPTY TO FULL AT RANDOM AND HAS BEEN REPORTED AS A COMMON PROBLEM BUT HAS NOT BEEN RECALLED. *JB
NHTSA ODI #10147141
85,000 miles · Dec 8, 2005
Service Brakes, Hydraulic
FAILURE OF ANTI-LOCK BRAKE SYSTEM. DEFECTIVE MODULE KEPT FEEDING POWER TO THE MOTOR OF THE ABS AND THEN THE MOTOR FRIED. MY ABS LIGHT (YELLOW) CAME ON FOLLOWED BY THE BRAKE SERVICE LIGHT (RED). A DIAGNOSTIC SCAN REVEALED THE ABS MODULE AND MOTOR BOTH WERE DEFECTIVE. I HAD BOTH THE MODULE AND THE MOTOR REPLACED. THE PARTS T…
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FAILURE OF ANTI-LOCK BRAKE SYSTEM. DEFECTIVE MODULE KEPT FEEDING POWER TO THE MOTOR OF THE ABS AND THEN THE MOTOR FRIED. MY ABS LIGHT (YELLOW) CAME ON FOLLOWED BY THE BRAKE SERVICE LIGHT (RED). A DIAGNOSTIC SCAN REVEALED THE ABS MODULE AND MOTOR BOTH WERE DEFECTIVE. I HAD BOTH THE MODULE AND THE MOTOR REPLACED. THE PARTS TOTALED AROUND $1500. *NM
NHTSA ODI #10144785
66,577 miles · Nov 9, 2005
Service Brakes, Hydraulic
THE ANTI-LOCK BRAKES SYSTEM FAILED DO TO CORROSION, DO TO THE SALT USAGE FOR SNOW & ICE CONTROL IN THE STATE OF MINNESOTA. THEY WOULD ACTIVATE AT LOW SPEEDS, AND BY THE TIME I GOT THE DEALER TO GET IT REPAIRED I ALMOST HIT A BUILDING AND A VEHICLE COULDN'T STOP IN TIME. THE PARTS WHERE REMOVED, CLEANED, CONDITIONED AND PUT BACK …
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THE ANTI-LOCK BRAKES SYSTEM FAILED DO TO CORROSION, DO TO THE SALT USAGE FOR SNOW & ICE CONTROL IN THE STATE OF MINNESOTA. THEY WOULD ACTIVATE AT LOW SPEEDS, AND BY THE TIME I GOT THE DEALER TO GET IT REPAIRED I ALMOST HIT A BUILDING AND A VEHICLE COULDN'T STOP IN TIME. THE PARTS WHERE REMOVED, CLEANED, CONDITIONED AND PUT BACK ON THE VEHICLE. CAMPAIGN NUMBER 05V379000. *JB
NHTSA ODI #10142259
Mileage unknown · Sep 23, 2005
Service Brakes, Hydraulic
ABS SYSTEM ACTIVATES AT LOW SPEEDS CAUSING A MUCH LONGER TIME TO STOP MY TRUCK. ALMOST ROLLED OUT INTO ON COMING TRAFFIC. ONLY HAPPENS OCCASIONALLY WITHOUT ANY RHYME OR REASON. *JB
NHTSA ODI #10137438
Mileage unknown · Sep 2, 2005
Service Brakes, Hydraulic
ABS BRAKES START TO CHATTER WHEN BRAKES APPLIED SLOWLY AND WILL NOT STOP MY 2000 CHEVY SILVERADO. A FRIEND HAS A 2003 SILVERADO WITH 35000 MILES AND DID THE SAME THING. HAD TO USE EMERGENCY BRAKE TO STOP. ABS WARNING LIGHT DOES NOT INDICATE A PROBLEM. ALMOST HIT A PARKED CAR IN FRONT OF ME. DEALER WOULD NOT MAKE REPAIRS UNDER W…
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ABS BRAKES START TO CHATTER WHEN BRAKES APPLIED SLOWLY AND WILL NOT STOP MY 2000 CHEVY SILVERADO. A FRIEND HAS A 2003 SILVERADO WITH 35000 MILES AND DID THE SAME THING. HAD TO USE EMERGENCY BRAKE TO STOP. ABS WARNING LIGHT DOES NOT INDICATE A PROBLEM. ALMOST HIT A PARKED CAR IN FRONT OF ME. DEALER WOULD NOT MAKE REPAIRS UNDER WARRANTY FOR MY FRIEND. MY GARAGE CAME UP WITH A 150.00 WORTH OF PARTS TO FIX MINE. I HAVE 76.000 MILES ON MY 2000. *NM
NHTSA ODI #10135232
70,000 miles · Aug 31, 2005
Service Brakes, Hydraulic
ABS BRAKE MALFUNCTION, VEHICLE HARD TO STOP AT LOW SPEED. *NM
NHTSA ODI #10134951
77,000 miles · Aug 30, 2005
Service Brakes, Hydraulic
WHAT IS DESCRIBED WITH THE BRAKES IN THE RECALL INFORMATION IS WHAT HAPPENED TO ME YESTERDAY 08/29/05 ON INTERSTATE 69 HERE IN INDIANA. I ALMOST HIT A SEMI TRUCK IN THE REAR IN. I FINALLY GOT MY TRUCK STOPPED BY THROWING IT INTO PARK AFTER NOTHING ELSE WORKED. THEN I WENT TO A REPAIR SHOP AND THEY CHARGED ME $264.00 FOR NEW PADS…
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WHAT IS DESCRIBED WITH THE BRAKES IN THE RECALL INFORMATION IS WHAT HAPPENED TO ME YESTERDAY 08/29/05 ON INTERSTATE 69 HERE IN INDIANA. I ALMOST HIT A SEMI TRUCK IN THE REAR IN. I FINALLY GOT MY TRUCK STOPPED BY THROWING IT INTO PARK AFTER NOTHING ELSE WORKED. THEN I WENT TO A REPAIR SHOP AND THEY CHARGED ME $264.00 FOR NEW PADS AND ROTORS ON THE REAR WHEELS. *JB
NHTSA ODI #10134833
14,000 miles · May 8, 2005
Service Brakes, Hydraulic
THIS PROBLEM OCCURRED LAST YEAR, BUT I AM JUST NOW REPORTING IT LOOKING AT THE RECENT RECALL OF THIS SAME PICKUP. I OWN A 2000 HALF TON CHEVROLET PU 4X4. I NOTICED THE ANTI-LOCK BRAKES WEREN'T WORKING VERY WELL AT LOW SPEEDS AND MADE A NOISE BEFORE FINALLY STOPPING THE TRUCK. IT WAS GETTING NOTICEABLE AT HIGHER SPEEDS AS TIME…
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THIS PROBLEM OCCURRED LAST YEAR, BUT I AM JUST NOW REPORTING IT LOOKING AT THE RECENT RECALL OF THIS SAME PICKUP. I OWN A 2000 HALF TON CHEVROLET PU 4X4. I NOTICED THE ANTI-LOCK BRAKES WEREN'T WORKING VERY WELL AT LOW SPEEDS AND MADE A NOISE BEFORE FINALLY STOPPING THE TRUCK. IT WAS GETTING NOTICEABLE AT HIGHER SPEEDS AS TIME WENT ON. I TOOK IT TO THE CAR DEALER WHERE I BOUGHT THE TRUCK. NOT ONLY DID THE ANTI-LOCK BRAKE SENSOR NEED REPLACING, BUT SO DID ALL FOUR ROTORS. THEY WERE RUSTED SO BADLY THAT THEY WERE FLAKING AWAY. THIS TRUCK HAD ONLY 14,000 MILES ON IT EVEN THOUGH IT WAS A 2000. IT WAS STORED INSIDE WHEN NOT DRIVEN. GM AGREED TO PAY FOR HALF OF THE REPAIRS BUT NOT ALL. THIS WAS A SAFETY ISSUE, AND I OFFERED TO TAKE THE DEALER TO A JUNK YARD TO SHOW HIM THAT ROTORS DON'T RUST LIKE THESE WERE EVEN AT JUNK YARDS. I STILL HAVE THE ROTORS IF YOUR DEPT. WOULD BE INTERESTED IN LOOKING AT THEM. I BELIEVE THERE IS MORE TO THE STORY THAN GM WAS WILLING TO TELL ME, ESPECIALLY NOTICING THE RECENT RECALL OF THEIR TRUCKS.
NHTSA ODI #10120221
Mileage unknown · May 7, 2005
Service Brakes, Hydraulic
1. BRAKE ROTORS RUSTED FROM THE INSIDE. NO WAY TO TURN THEM. HAD TO REPLACE. 2. ANTI-LOCK SENSORS RUSTED. ALMOST CAUSED ME TO CRASH. 3. PLEASE DON'T LET THEM STEER YOU AWAY FROM THE ROTOR PROBLEM. IT'S A LOT BIGGER THAN THE SENSOR PROBLEM. 3. I TALKED TO GM ABOUT BOTH PROBLEMS. GOT NO HELP. THEY LET ON LIKE THEY DIDN'T K…
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1. BRAKE ROTORS RUSTED FROM THE INSIDE. NO WAY TO TURN THEM. HAD TO REPLACE. 2. ANTI-LOCK SENSORS RUSTED. ALMOST CAUSED ME TO CRASH. 3. PLEASE DON'T LET THEM STEER YOU AWAY FROM THE ROTOR PROBLEM. IT'S A LOT BIGGER THAN THE SENSOR PROBLEM. 3. I TALKED TO GM ABOUT BOTH PROBLEMS. GOT NO HELP. THEY LET ON LIKE THEY DIDN'T KNOW OF ANY PROBLEM WITH THEIR BRAKES. I KNEW THEY LYING. 4. PLEASE MAKE SURE TENNESSEE IS INCLUDED AND ALSO THE ROTOR PROBLEM. MINE IS A 2000 SILVERADO. THANKS
NHTSA ODI #10120161
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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