NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
164 reportsClear category filterMileage unknown · Dec 18, 2006
Service Brakes, Hydraulic
THE BRAKES ON MY 2002 SILVERADO ARE TERRIBLE. AT LOW SPEEDS THE BRAKE PEDAL GOES TO THE FLOOR AND THE TRUCK WILL NOT STOP. MY WIFE REFUSES TO DRIVE THE TRUCK. I USE IT TO PULL MY 2 HORSE TRAILER AND THE TRAILER BRAKES STOP THE VEHICLE. THE CHEVY RECALL ON THESE BRAKES SHOULD BE EXTENDED TO ALL STATES! I LIVE IN FLORIDA AND OBVIO…
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THE BRAKES ON MY 2002 SILVERADO ARE TERRIBLE. AT LOW SPEEDS THE BRAKE PEDAL GOES TO THE FLOOR AND THE TRUCK WILL NOT STOP. MY WIFE REFUSES TO DRIVE THE TRUCK. I USE IT TO PULL MY 2 HORSE TRAILER AND THE TRAILER BRAKES STOP THE VEHICLE. THE CHEVY RECALL ON THESE BRAKES SHOULD BE EXTENDED TO ALL STATES! I LIVE IN FLORIDA AND OBVIOUSLY MY TRUCK HAS BEEN AFFECTED BY THE FAULTY ABS SENSOR ISSUE. *NM
NHTSA ODI #10176498
70,000 miles · Nov 30, 2006
Service Brakes, HydraulicCrash
DT*: THE CONTACT STATED WHILE APPLYING BRAKE PRESSURE AT 10 MPH IN A PARKING LOT, THERE WAS AN INCREASED STOPPING DISTANCE, AND THE VEHICLE STRUCK A LIGHTING POLE. THERE WERE NO INJURIES BUT THERE WAS VEHICLE DAMAGE SUSTAINED. THE POLICE WERE NOT ALERTED. ALSO, THE DEALER AND MANUFACTURER WERE NOT ALERTED AS WELL. UPDATED…
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DT*: THE CONTACT STATED WHILE APPLYING BRAKE PRESSURE AT 10 MPH IN A PARKING LOT, THERE WAS AN INCREASED STOPPING DISTANCE, AND THE VEHICLE STRUCK A LIGHTING POLE. THERE WERE NO INJURIES BUT THERE WAS VEHICLE DAMAGE SUSTAINED. THE POLICE WERE NOT ALERTED. ALSO, THE DEALER AND MANUFACTURER WERE NOT ALERTED AS WELL. UPDATED 12/28/2006 - THE CONSUMER CONTACTED THE MANUFACTURER. THE MANUFACTURER INFORMED THE CONSUMER THAT A RECALL HAD BEEN ISSUED. THE RECALLED ANTILOCK BRAKES WERE REPLACED BY THE MANUFACTURER. *NM
NHTSA ODI #10174782
Mileage unknown · Nov 29, 2006
Service Brakes, HydraulicSteeringSuspension
DT*: THE CONTACT STATED WHILE BRAKING FROM VARIOUS SPEEDS, THE ANTI-LOCK BRAKE SYSTEM DID NOT ENGAGE AND THE BRAKE PEDAL WENT ALMOST ALL THE WAY TO THE FLOOR OF THE VEHICLE. THIS CAUSED AN EXTENDED STOPPING DISTANCE AND NEARLY CAUSED A CRASH. THERE WAS A NHTSA RECALL #05V379000 WHICH PERTAINS TO THE HYDRAULIC ANTI-LOCK SERVICE…
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DT*: THE CONTACT STATED WHILE BRAKING FROM VARIOUS SPEEDS, THE ANTI-LOCK BRAKE SYSTEM DID NOT ENGAGE AND THE BRAKE PEDAL WENT ALMOST ALL THE WAY TO THE FLOOR OF THE VEHICLE. THIS CAUSED AN EXTENDED STOPPING DISTANCE AND NEARLY CAUSED A CRASH. THERE WAS A NHTSA RECALL #05V379000 WHICH PERTAINS TO THE HYDRAULIC ANTI-LOCK SERVICE BRAKES. THE VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN. THE PCV VALVE AND FUEL FILTER WERE REPLACED. THE REAR BRAKE PADS WERE REPLACED AND THE ROTORS WERE MACHINED, THE ROTORS WERE EVENTUALLY REPLACED, THERE WAS NOISE COMING FROM THE FRONT END. THE INTERMEDIATE STEERING SHAFT WAS DRY. UPDATED 01/09/07. *JB
NHTSA ODI #10174659
70,000 miles · Nov 20, 2006
Service Brakes, Hydraulic
WHEN DRIVING ON INTERSTATE BRAKES WILL BEGIN TO APPLY WITHOUT ACTION BY THE DRIVER, CAUSING VIBRATION AND OVER HEATING OF ROTORS AND STIFF BRAKE PEDAL, THIS HAPPENS AFTER ABOUT 15 MILES ON THE INTERSTATE AND BRAKES HAVE NOT BEEN APPLIED. *JB
NHTSA ODI #10173905
97,000 miles · Nov 17, 2006
Service Brakes, HydraulicCrashInjury
WHILE ATTEMPTING TO PARK VEHICLE, THE ABS SYSTEM ACTIVATED FOR APPARENT REASON, CAUSING THE CAR TO HIT A WALL. TOOK VEHICLE TO DEALER, THEY DUPLICATED PROBLEM, TOLD ME THAT THERE WAS A RECALL FOR THAT PROBLEM. GM CONTACTED AND INITIALLY CONFIRMED PROBLEM, NOW AFTER TWO WEEKS THEY ARE DENYING ANY PROBLEM EXIST ... *NM
NHTSA ODI #10173754
Mileage unknown · Sep 20, 2006
Service Brakes, Hydraulic
MY SUBMISSION PERTAINS TO CAMPAIGN ID NUMBER 05V37900. I WOULD LIKE TO INFORM YOUR OFFICE THAT THE SAME PROBLEM OCCURS ON GUAM AS WELL AS THE OTHER STATES YOU HAVE MENTIONED IN T THE RECALL REPORT. IT OCCURS IN BOTH MY VEHICLES 1999 GMC YUKON 2002 CHEVROLET SILV…
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MY SUBMISSION PERTAINS TO CAMPAIGN ID NUMBER 05V37900. I WOULD LIKE TO INFORM YOUR OFFICE THAT THE SAME PROBLEM OCCURS ON GUAM AS WELL AS THE OTHER STATES YOU HAVE MENTIONED IN T THE RECALL REPORT. IT OCCURS IN BOTH MY VEHICLES 1999 GMC YUKON 2002 CHEVROLET SILVERADO BOTH OF WHICH I BELIEVE HAVE RECALLS PERTAINING TO THE ANTI-LOCK BRAKE SYSTEM. *JB
NHTSA ODI #10168789
59,800 miles · Sep 19, 2006
Service Brakes, Hydraulic
DT*: THE CONTACT STATED WHILE TRAVELING 10 MPH IN NORMAL DRIVING CONDITIONS, BRAKE PRESSURE WAS APPLIED AND THERE WAS AN INCREASED STOPPING DISTANCE. THE VEHICLE WAS EXPOSED TO EXCESSIVE ROAD SALTS. THE VEHICLE WAS TAKEN TO THE DEALER TO AWAIT INSPECTION. THERE WAS A NHTSA RECALL, # 05V379000, REGARDING SERVICE BRAKES, HYDRAU…
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DT*: THE CONTACT STATED WHILE TRAVELING 10 MPH IN NORMAL DRIVING CONDITIONS, BRAKE PRESSURE WAS APPLIED AND THERE WAS AN INCREASED STOPPING DISTANCE. THE VEHICLE WAS EXPOSED TO EXCESSIVE ROAD SALTS. THE VEHICLE WAS TAKEN TO THE DEALER TO AWAIT INSPECTION. THERE WAS A NHTSA RECALL, # 05V379000, REGARDING SERVICE BRAKES, HYDRAULIC:ANTILOCK. THE VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN. THE MANUFACTURER WAS NOTIFIED.
NHTSA ODI #10168647
5 miles · Sep 5, 2006
Service Brakes, Hydraulic
IN REGARDS TO NHTSA CAMPAIGN ID NUMBER: 05V379000, I LIVE IN THE WESTERN MOUNTAINS OF VIRGINIA AND I AM HAVING THE IDENTICAL PROBLEMS ASSOCIATED WITH THE ABOVE MENTIONED RECALL. I DON'T THINK GM REALIZE THAT THERE IS A PART OF VIRGINIA, LIKE WEST VIRGINIA, THAT GETS A LOT OF CHLORIDE ON THE ROADS IN THE WINTER MONTHS. THE VEH…
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IN REGARDS TO NHTSA CAMPAIGN ID NUMBER: 05V379000, I LIVE IN THE WESTERN MOUNTAINS OF VIRGINIA AND I AM HAVING THE IDENTICAL PROBLEMS ASSOCIATED WITH THE ABOVE MENTIONED RECALL. I DON'T THINK GM REALIZE THAT THERE IS A PART OF VIRGINIA, LIKE WEST VIRGINIA, THAT GETS A LOT OF CHLORIDE ON THE ROADS IN THE WINTER MONTHS. THE VEHICLE HAS HAD A COUPLE OF NEAR ACCIDENTS DUE TO THE MALFUNCTION OF THE ABS SYSTEM. I HAVE REMOVED THE FUSE TO THE SYSTEM UNTIL I HAVE THE PROBLEM FIXED. *JB
NHTSA ODI #10167355
40,000 miles · Aug 23, 2006
Service Brakes, Hydraulic
DT*: THE CONTACT STATED THE VEHICLE BRAKE PADS HAD NORMAL WEAR PATTERNS BUT ON THE INSIDE OF BOTH ROTORS THE WEAR PATTERN SHOULD HAVE BEEN APPROXIMATELY 2 INCHES BUT WERE 3/4 INCHES. ALSO, THERE WAS CORROSION ON THE ROTOR WHICH CAUSED THE BRAKE PAD TO WEAR INCONSISTENTLY. THE HYDRAULIC DISC BRAKES HAD EXTENDED STOPPING DISTAN…
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
NHTSA ODI #10166368
110,350 miles · Aug 8, 2006
Service Brakes, HydraulicCrash
DT*: THE CONTACT STATED WHILE DRIVING 67 MPH OVER A BRIDGE WITH BRAKE PRESSURE APPLIED, THE BRAKES FAILED AND THE VEHICLE STRUCK THE BRIDGE. NO INJURIES WERE SUSTAINED. THE POLICE WERE ON THE SCENE AND A REPORT WAS TAKEN. THE VEHICLE WAS INSPECTED BY AN INDEPENDENT INSPECTOR WHO WAS UNABLE TO DUPLICATE THE PROBLEM. UPDAT…
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DT*: THE CONTACT STATED WHILE DRIVING 67 MPH OVER A BRIDGE WITH BRAKE PRESSURE APPLIED, THE BRAKES FAILED AND THE VEHICLE STRUCK THE BRIDGE. NO INJURIES WERE SUSTAINED. THE POLICE WERE ON THE SCENE AND A REPORT WAS TAKEN. THE VEHICLE WAS INSPECTED BY AN INDEPENDENT INSPECTOR WHO WAS UNABLE TO DUPLICATE THE PROBLEM. UPDATED 10/4/2006 - THE INSPECTOR DID FIND FOUR CODES STORED FOR THE BRAKES. GM EXPLAINED THAT THIS FAILURE WAS NOT THE RESULT OF THE OPEN RECALL 05V379000 WHICH HAD NOT YET BEEN PERFORMED ON THE VEHICLE. THE VEHICLE SUSTAINED DAMAGED TO THE LEFT SIDE OF THE CAB AND BOX. *NM
NHTSA ODI #10164902
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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