NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
151 reportsClear category filter53,300 miles · Dec 27, 2010
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 5 MPH, THE CONTACT APPLIED THE BRAKES AND THE BRAKE PEDAL DEPRESSED TO THE FLOORBOARD; THE SERVICE BRAKES LIGHT ALSO ILLUMINATED. THE VEHICLE COASTED TO A STOP AND WAS TOWED TO A LOCAL REPAIR SHOP WHERE THE CONTACT WAS INFORMED THAT THE BRAKE LINES …
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 5 MPH, THE CONTACT APPLIED THE BRAKES AND THE BRAKE PEDAL DEPRESSED TO THE FLOORBOARD; THE SERVICE BRAKES LIGHT ALSO ILLUMINATED. THE VEHICLE COASTED TO A STOP AND WAS TOWED TO A LOCAL REPAIR SHOP WHERE THE CONTACT WAS INFORMED THAT THE BRAKE LINES FRACTURED DUE TO RUST AND CORROSION. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 53,300 AND THE CURRENT MILEAGE WAS APPROXIMATELY 55,000.
NHTSA ODI #10372549
90,000 miles · Dec 15, 2010
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT WAS TRAVELING 35 MPH WHEN THE BRAKES FAILED. THE CONTACT HAD A PROBLEM WITH THE ANTI- BRAKE SYSTEM WHILE DRIVING UNDER 5 MPH. WHEN THE VEHICLE WAS INSPECTED HE WAS INFORMED THAT THE BRAKE LINES WERE COMPLETELY COVERED WITH RUST. THE FAILURE AND CURRENT MILEAGES WER…
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT WAS TRAVELING 35 MPH WHEN THE BRAKES FAILED. THE CONTACT HAD A PROBLEM WITH THE ANTI- BRAKE SYSTEM WHILE DRIVING UNDER 5 MPH. WHEN THE VEHICLE WAS INSPECTED HE WAS INFORMED THAT THE BRAKE LINES WERE COMPLETELY COVERED WITH RUST. THE FAILURE AND CURRENT MILEAGES WERE 90000.
NHTSA ODI #10370797
24,800 miles · Dec 6, 2010
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 25 MPH, THE BRAKE LINES FAILED. THE CONTACT DID NOT HEAR ANY NOISES NOR DID ANY WARNING LIGHTS ILLUMINATE ON THE INSTRUMENTAL PANEL PRIOR TO THE FAILURE. THE CONTACT WAS ABLE TO DRIVE THE VEHICLE TO HIS DESTINATION WITHOUT …
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TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 25 MPH, THE BRAKE LINES FAILED. THE CONTACT DID NOT HEAR ANY NOISES NOR DID ANY WARNING LIGHTS ILLUMINATE ON THE INSTRUMENTAL PANEL PRIOR TO THE FAILURE. THE CONTACT WAS ABLE TO DRIVE THE VEHICLE TO HIS DESTINATION WITHOUT FURTHER INCIDENT. THE VEHICLE WAS NOT INSPECTED OR REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 24,800.
NHTSA ODI #10369350
75,000 miles · Dec 3, 2010
Service Brakes, Hydraulic
MY 2003 CHEVY SILVERADO PICK UP TRUCK BRAKES FAILED THREE (3) DIFFERENT TIMES IN 2010.THIS HAPPENED ON A HIGHWAY AND RESIDENTIAL STREETS. THE BRAKE LINE TUBING RUPTURED BECAUSE OF RUST AND CORROSION, LEAVING ME IN A VERY DANGEROUS SITUATION WITH NO BRAKES. MY TRUCK IS IN AN AUTO REPAIR SHOP NOW AND ALL THE BRAKE LINE TUBING IS …
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MY 2003 CHEVY SILVERADO PICK UP TRUCK BRAKES FAILED THREE (3) DIFFERENT TIMES IN 2010.THIS HAPPENED ON A HIGHWAY AND RESIDENTIAL STREETS. THE BRAKE LINE TUBING RUPTURED BECAUSE OF RUST AND CORROSION, LEAVING ME IN A VERY DANGEROUS SITUATION WITH NO BRAKES. MY TRUCK IS IN AN AUTO REPAIR SHOP NOW AND ALL THE BRAKE LINE TUBING IS BEING REPLACED LEAVING ME WITH NO TRANSPORTATION FOR WORK AND A VERY LARGE AUTO REPAIR BILL. *TR
NHTSA ODI #10369035
76,000 miles · Nov 26, 2010
Service Brakes, Hydraulic
CHEVROLET SILVERADO 1500 2003 76,000 MILES. BRAKES FAILED WHILE PULLING A 6000LB TRAILER ON AN INTERSTATE. RUSTY BRAKE LINES BURST WHEN BRAKES WERE APPLIED WHILE ENTERING A CONSTRUCTION ZONE. HAD NO BRAKES. IF CAR IN FRONT HADN'T SEEN ME COMING AND PULLED OVER, THIS MAY HAVE BEEN A FATALITY REPORT. *TR
NHTSA ODI #10367865
36,000 miles · Nov 10, 2010
Service Brakes, Hydraulic
APPLIED BRAKES AND THE BRAKE PEDAL ALMOST WENT TO THE FLOOR,I WAS ABLE TO SAFELY PULL TO THE CURB WITH THE ASSISTANCE OF THE EMERGENCY BRAKE.UPON INSPECTION OF THE PROBLEM I FOUND THAT ALL THE STEEL BRAKE LINES UNDER THE VEHICLE WERE RUSTED. ONE BRAKE LINE HAD BURST DUE TO THE CORROSION. THERE SHOULD BE NO REASON THAT THESE BRA…
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APPLIED BRAKES AND THE BRAKE PEDAL ALMOST WENT TO THE FLOOR,I WAS ABLE TO SAFELY PULL TO THE CURB WITH THE ASSISTANCE OF THE EMERGENCY BRAKE.UPON INSPECTION OF THE PROBLEM I FOUND THAT ALL THE STEEL BRAKE LINES UNDER THE VEHICLE WERE RUSTED. ONE BRAKE LINE HAD BURST DUE TO THE CORROSION. THERE SHOULD BE NO REASON THAT THESE BRAKE LINES SHOULD RUST AND FAIL EVER, NEVERMIND AT 36000 MILES. THIS COULD HAVE BEEN ALOT WORSE, SOMEONE COULD HAVE BEEN KILLED.
NHTSA ODI #10366112
20,843 miles · Nov 8, 2010
Service Brakes, Hydraulic
WHEN ATTEMPTING TO SLOW MY 2003 CHEVROLET SILVERADO 1500 TO ENTER AN OFF RAMP, THE BRAKE PEDAL WENT TO THE FLOOR AND THE BRAKES NO LONGER WORKED. I BARELY MISSED HITTING SOMEONE AND WAS ABLE TO USE THE PARKING BRAKE TO SLOW AND STOP THE TRUCK. LUCKILY, I WAS GOING UP AN INCLINE AND HAD ROOM TO PULL OFF THE MAIN ROAD. I HAD TO…
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WHEN ATTEMPTING TO SLOW MY 2003 CHEVROLET SILVERADO 1500 TO ENTER AN OFF RAMP, THE BRAKE PEDAL WENT TO THE FLOOR AND THE BRAKES NO LONGER WORKED. I BARELY MISSED HITTING SOMEONE AND WAS ABLE TO USE THE PARKING BRAKE TO SLOW AND STOP THE TRUCK. LUCKILY, I WAS GOING UP AN INCLINE AND HAD ROOM TO PULL OFF THE MAIN ROAD. I HAD TO TOW THE TRUCK TO MY MECHANIC. UPON INITIAL INSPECTION, IT WAS DEEMED THAT THE BRAKE LINES CORRODED TO THE POINT THAT THEY BLEW OUT. IT WAS ALSO DETERMINED THAT ALL OF THE BRAKE LINES WERE CORRODED. INCLUDING THE TOW, THE COST OF REPAIRS WAS OVER $1100. THE TRUCK BARELY HAD OVER 20,000 MILES AT THE TIME. I LIVE IN MARYLAND AND HAVE OWNED OTHER VEHICLES FOR MUCH LONGER AND WITH A LOT MORE MILES. THIS TYPE OF FAILURE COULD HAVE CERTAINLY RESULTED IN A MAJOR ACCIDENT WITH MULTIPLE INJURIES OR EVEN DEATHS. I HOPE THIS COMPLAINT AIDS IN THE FEDERAL INVESTIGATION I READ ABOUT HERE: HTTP://WWW.INSIDELINE.COM/CHEVROLET/SILVERADO-2500HD/FEDS-INVESTIGATING-6-2-MILLION-GM-VEHICLES-FOR-POSSIBLE-BRAKE-PROBLEM.HTML THANK YOU. *TR
NHTSA ODI #10365039
3,000 miles · Nov 1, 2010
Service Brakes, Hydraulic
EVERY TIME WHEN COMING TO A STOP THE BRAKE PEDAL GOES SOFT HAVE TO PRESS REAL HARD TO GET TRUCK TO STOP.THIS HAS BEEN GOING ON FROM WHEN BRAND NEW, I THOUGHT THAT WAS THE WAY GM BRAKES FELT. I AM THE ORIGINAL OWNER,TRUCK HAS 27,000 MILES,AND BRAKES WERE REPLACED AT12,000 MILES. I AM AN ASE MECHANIC AND ITS NOT THE BRAKE PADS OR …
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EVERY TIME WHEN COMING TO A STOP THE BRAKE PEDAL GOES SOFT HAVE TO PRESS REAL HARD TO GET TRUCK TO STOP.THIS HAS BEEN GOING ON FROM WHEN BRAND NEW, I THOUGHT THAT WAS THE WAY GM BRAKES FELT. I AM THE ORIGINAL OWNER,TRUCK HAS 27,000 MILES,AND BRAKES WERE REPLACED AT12,000 MILES. I AM AN ASE MECHANIC AND ITS NOT THE BRAKE PADS OR ROTORS. I HAVE DRIVEN A 03 3500 TRUCK WITH SAME PROBLEM. *TR
NHTSA ODI #10363587
137,000 miles · Nov 1, 2010
Service Brakes, Hydraulic
CORRODED FRONT BRAKE LINES. ALSO FRONT BRAKE CALIPERS. *TR
NHTSA ODI #10363484
80,000 miles · Oct 16, 2010
Service Brakes, Hydraulic
DRIVING AT HIGHWAY SPEEDS, I HIT THE BRAKES TO STOP FOR TRAFFIC LIGHT. BRAKE PEDAL WENT TO THE FLOOR. THE "RUSTED" BRAKE LINE HAD CRACKED OPEN AND ALLOWED FLUID TO ESCAPE. NO BRAKES. HAD TO HAVE VEHICLE TOWED TO MY HOUSE. THIS HAPPENED TODAY,10/16/2010. IT IS A 2003 CHEVY SILVERADO P/U ALL OF THE STEEL LINES ARE RUSTED. *TR
NHTSA ODI #10360787
NHTSA investigations
3EA11001 · Brake Line Corrosion Failure
Opened Jan 5, 2011 · Closed Apr 8, 2015
Status: closed (inferred from source dates) · Service Brakes, Hydraulic; Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
On January 11, 2011, ODI opened EA11-001 to investigate allegations of premature brake line corrosion failure in model year (MY) 1999 through 2003 General Motors (GM) full-size pickup trucks and sport utility vehicles sold or registered in the following region of the United States that NHTSA has viewed as salt states for investigations of corrosion related issues:Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin.The subject vehicles represent the first five MY's of GM's GMT800 platform production, of which approximately 2,038,504 vehicles were sold in salt states (the subject vehicles).The GMT800 platform includes the following vehicles:1999-2007 Chevrolet Silverado and GMC Sierra 1500, 2500 and 3500 series pick-up trucks; 2000-2006 Chevrolet Suburban, Chevrolet Tahoe and GMC Yukon sport utility vehicles; and 2002-2006 Cadillac Escalade and Chevrolet Avalanche sport-utility vehicles.General Motors produced a total of approximately 10,427,062 GMT800 vehicles for sales in the United States, including almost 5 million that were sold in salt states.Although there are over 60 different brake pipe routing configuration used in GMT800 vehicles, with the exception of the rear crossover pipes in MY 200x-2007 vehicles that changed from rear disc to drum brakes, all of the vehicles use brake pipes from the same supplier with a common double-wall, brazed steel pipe design with a combination of hot dip Zinc-Aluminum corrosion protection coating and Aluminum paint outer layer known in the industry as AlGal (ASTM-B750). ODI analysis of field data regarding GMT800 vehicles identified a total of 3,645 complaints of brake pipe corrosion failures, including 107 alleging crashes, and 40 injuries.Though only 20% of total GMT800 production, due to age and region the subject vehicles account for a disproportionate share of the failure experience; with 2,702 of the complaints (75%), 88 of the crashes (82%) and 20 of the injuries (50%) reported in those vehicles.Analysis of the complaints showed strong correlations to vehicle age and region.For vehicles with less than 8 years of service, the complaint rates were minimal for all regions.In the salt states the failure rates begin to climb as the vehicles advance in age, particularly in the Northeast corner of the United States.The complaint rates in the salt states go from less than 0.1 incident per thousand vehicles (IPTV) at 7 years in service to over 1.0 IPTV after the 12th year of service for the subject pickup trucks and utility vehicles.Most of the failures reported to ODI occurred in vehicles with more than 10 years in service.ODI?s investigation did not identify any specific defect conditions that were causing or contributing to the brake pipe failures.Nor did the analysis isolate the problem to any subject vehicle sub-populations when analyzed by vehicle type or production range.The investigation found that vehicles experiencing brake pipe corrosion failures were likely to have general patterns of excessive corrosion on the majority of the brake pipe assembly and appear to be occurring due to expected wear out for the brake pipe coating material used in the subject vehicles and the environmental conditions in severe corrosion states.A safety-related defect has not been identified at this time.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.The agency will monitor t
Additional source detail variants (2)
Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
On January 11, 2011, ODI opened EA11-001 to investigate allegations of premature brake line corrosion failure in model year (MY) 1999 through 2003 General Motors (GM) full-size pickup trucks and sport utility vehicles sold or registered in the following region of the United States that NHTSA has viewed as salt states for investigations of corrosion related issues:Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin.The subject vehicles represent the first five MY's of GM's GMT800 platform production, of which approximately 2,038,504 vehicles were sold in salt states (the subject vehicles).The GMT800 platform includes the following vehicles:1999-2007 Chevrolet Silverado and GMC Sierra 1500, 2500 and 3500 series pick-up trucks; 2000-2006 Chevrolet Suburban, Chevrolet Tahoe and GMC Yukon sport utility vehicles; and 2002-2006 Cadillac Escalade and Chevrolet Avalanche sport-utility vehicles.General Motors produced a total of approximately 10,427,062 GMT800 vehicles for sales in the United States, including almost 5 million that were sold in salt states.Although there are over 60 different brake pipe routing configuration used in GMT800 vehicles, with the exception of the rear crossover pipes in MY 200x-2007 vehicles that changed from rear disc to drum brakes, all of the vehicles use brake pipes from the same supplier with a common double-wall, brazed steel pipe design with a combination of hot dip Zinc-Aluminum corrosion protection coating and Aluminum paint outer layer known in the industry as AlGal (ASTM-B750). ODI analysis of field data regarding GMT800 vehicles identified a total of 3,645 complaints of brake pipe corrosion failures, including 107 alleging crashes, and 40 injuries.Though only 20% of total GMT800 production, due to age and region the subject vehicles account for a disproportionate share of the failure experience; with 2,702 of the complaints (75%), 88 of the crashes (82%) and 20 of the injuries (50%) reported in those vehicles.Analysis of the complaints showed strong correlations to vehicle age and region.For vehicles with less than 8 years of service, the complaint rates were minimal for all regions.In the salt states the failure rates begin to climb as the vehicles advance in age, particularly in the Northeast corner of the United States.The complaint rates in the salt states go from less than 0.1 incident per thousand vehicles (IPTV) at 7 years in service to over 1.0 IPTV after the 12th year of service for the subject pickup trucks and utility vehicles.Most of the failures reported to ODI occurred in vehicles with more than 10 years in service.ODI?s investigation did not identify any specific defect conditions that were causing or contributing to the brake pipe failures.Nor did the analysis isolate the problem to any subject vehicle sub-populations when analyzed by vehicle type or production range.The investigation found that vehicles experiencing brake pipe corrosion failures were likely to have general patterns of excessive corrosion on the majority of the brake pipe assembly and appear to be occurring due to expected wear out for the brake pipe coating material used in the subject vehicles and the environmental conditions in severe corrosion states.A safety-related defect has not been identified at this time.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.The agency will monitor t
Service Brakes, Hydraulic
On January 11, 2011, ODI opened EA11-001 to investigate allegations of premature brake line corrosion failure in model year (MY) 1999 through 2003 General Motors (GM) full-size pickup trucks and sport utility vehicles sold or registered in the following region of the United States that NHTSA has viewed as salt states for investigations of corrosion related issues:Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin.The subject vehicles represent the first five MY's of GM's GMT800 platform production, of which approximately 2,038,504 vehicles were sold in salt states (the subject vehicles).The GMT800 platform includes the following vehicles:1999-2007 Chevrolet Silverado and GMC Sierra 1500, 2500 and 3500 series pick-up trucks; 2000-2006 Chevrolet Suburban, Chevrolet Tahoe and GMC Yukon sport utility vehicles; and 2002-2006 Cadillac Escalade and Chevrolet Avalanche sport-utility vehicles.General Motors produced a total of approximately 10,427,062 GMT800 vehicles for sales in the United States, including almost 5 million that were sold in salt states.Although there are over 60 different brake pipe routing configuration used in GMT800 vehicles, with the exception of the rear crossover pipes in MY 200x-2007 vehicles that changed from rear disc to drum brakes, all of the vehicles use brake pipes from the same supplier with a common double-wall, brazed steel pipe design with a combination of hot dip Zinc-Aluminum corrosion protection coating and Aluminum paint outer layer known in the industry as AlGal (ASTM-B750). ODI analysis of field data regarding GMT800 vehicles identified a total of 3,645 complaints of brake pipe corrosion failures, including 107 alleging crashes, and 40 injuries.Though only 20% of total GMT800 production, due to age and region the subject vehicles account for a disproportionate share of the failure experience; with 2,702 of the complaints (75%), 88 of the crashes (82%) and 20 of the injuries (50%) reported in those vehicles.Analysis of the complaints showed strong correlations to vehicle age and region.For vehicles with less than 8 years of service, the complaint rates were minimal for all regions.In the salt states the failure rates begin to climb as the vehicles advance in age, particularly in the Northeast corner of the United States.The complaint rates in the salt states go from less than 0.1 incident per thousand vehicles (IPTV) at 7 years in service to over 1.0 IPTV after the 12th year of service for the subject pickup trucks and utility vehicles.Most of the failures reported to ODI occurred in vehicles with more than 10 years in service.ODI?s investigation did not identify any specific defect conditions that were causing or contributing to the brake pipe failures.Nor did the analysis isolate the problem to any subject vehicle sub-populations when analyzed by vehicle type or production range.The investigation found that vehicles experiencing brake pipe corrosion failures were likely to have general patterns of excessive corrosion on the majority of the brake pipe assembly and appear to be occurring due to expected wear out for the brake pipe coating material used in the subject vehicles and the environmental conditions in severe corrosion states.A safety-related defect has not been identified at this time.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.The agency will monitor t
EA04011 · 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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