NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
151 reportsClear category filter70,000 miles · Sep 30, 2010
Service Brakes, Hydraulic
I HAVE A 2003 CHEVY SILVERADO 4X4 EXT. CAB 4.8L ENG. WHILE DRIVING THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR AND BRAKE FLUID WAS LEAKING UNDERNEATH THE FRONT OF THE VEHICLE. THE BRAKE LINES WERE RUSTED AND CORRODED ON THE OUTSIDE. I WILL BE REPLACING THEM. I HAVE ONLY 70,000 MILES ON IT. I HAVE OWNED NUMEROUS VEHICLES A…
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I HAVE A 2003 CHEVY SILVERADO 4X4 EXT. CAB 4.8L ENG. WHILE DRIVING THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR AND BRAKE FLUID WAS LEAKING UNDERNEATH THE FRONT OF THE VEHICLE. THE BRAKE LINES WERE RUSTED AND CORRODED ON THE OUTSIDE. I WILL BE REPLACING THEM. I HAVE ONLY 70,000 MILES ON IT. I HAVE OWNED NUMEROUS VEHICLES AND THIS IS THE FIRST TIME I HAVE EXPERIENCED RUSTED BRAKE LINES. ABOUT 5 MONTHS AGO I HAD THE SAME PROBLEM BUT ON A DIFFERENT BRAKE LINE ON THE REAR, THANK HEAVEN FOR SECONDARY BACKUP LINES. *TR
NHTSA ODI #10358514
49,500 miles · Sep 23, 2010
Service Brakes, Hydraulic
DRIVING DOWN THE HIGHWAY AND SLOWED FOR AN UPCOMING RED LIGHT AND LOST BRAKES. FORTUNATELY THE LIGHT TURNED GREEN AND NOBODY WAS IN FRONT OF ME. MY BRAKED LINE CORRODED BY MY DRIVER FRONT TIRE. CONTACTED CHEVROLET AND HAD ANOTHER MECHANIC COMPANY REPLACE THE LINE. *TR
NHTSA ODI #10357272
111,000 miles · Sep 21, 2010
Service Brakes, Hydraulic
THE REAR BACKING PLATES ON MY 2003 SILVERADO COMPLETELY ROTTED AWAY AND EXPOSED THE BRAKES AND DISC ROTORS AND CALIPERS TO EXTREME DIRT AND WINTER SALT. THIS CAUSED ONE BRAKE CALIPER TO FREEZE AND BOTH DISC ROTORS TO GET VERY BADLY PITTED. I HAD TO REPLACE ALL THE COMPONENTS FOR BOTH REAR BRAKES AT A VERY EXPENSIVE COST. I HAVE …
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THE REAR BACKING PLATES ON MY 2003 SILVERADO COMPLETELY ROTTED AWAY AND EXPOSED THE BRAKES AND DISC ROTORS AND CALIPERS TO EXTREME DIRT AND WINTER SALT. THIS CAUSED ONE BRAKE CALIPER TO FREEZE AND BOTH DISC ROTORS TO GET VERY BADLY PITTED. I HAD TO REPLACE ALL THE COMPONENTS FOR BOTH REAR BRAKES AT A VERY EXPENSIVE COST. I HAVE NEVER EXPERIENCED SOMETHING LIKE THIS IN ALL THE YEARS OF OWNING A MOTOR VEHICLE. *TR
NHTSA ODI #10356881
89,000 miles · Sep 20, 2010
Service Brakes, Hydraulic
ABS BRAKE SYSTEM ENGAGES AT SLOW SPEEDS ON DRY SURFACES CAUSING EXTENDED STOPPING DISTANCE. THIS PROBLEM AND THE FIX IS THE SAME AS DESCRIBED IN THE NHTSA DEFECT RECALL OF 05V379000. MY CHEVROLET SILVERADO IS A 2003 SO OUTSIDE THE RECALL AND DEALER REFUSES TO TAKE RESPONSIBILITY ALSO HAVE REPLACED THE REAR ROTORS WITH WORST RUS…
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ABS BRAKE SYSTEM ENGAGES AT SLOW SPEEDS ON DRY SURFACES CAUSING EXTENDED STOPPING DISTANCE. THIS PROBLEM AND THE FIX IS THE SAME AS DESCRIBED IN THE NHTSA DEFECT RECALL OF 05V379000. MY CHEVROLET SILVERADO IS A 2003 SO OUTSIDE THE RECALL AND DEALER REFUSES TO TAKE RESPONSIBILITY ALSO HAVE REPLACED THE REAR ROTORS WITH WORST RUST I HAVE EVER SEEN ON ROTOR. NEARLY FALLING APART. *TR
NHTSA ODI #10356599
58,784 miles · Sep 15, 2010
Service Brakes, Hydraulic
TOTAL BRAKE FAILURE ON 2003 CHEVROLET SILVERADO WITH JUST UNDER 59,000 MILES. IT COASTED TO A STOP AND THEN I HAD IT TOWED TO THE CHEVY DEALER. IT HAS NOW BEEN THERE THREE TIMES IN A WEEK. BILL SAYS FRONT BRAKE PADS THIN, FRONT BRAKE ROTORS BADLY RUSTED, REPLACES FRONT BRAKE PADS AND BOTH FRONT BRAKE ROTORS. REAR BRAKE PADS …
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TOTAL BRAKE FAILURE ON 2003 CHEVROLET SILVERADO WITH JUST UNDER 59,000 MILES. IT COASTED TO A STOP AND THEN I HAD IT TOWED TO THE CHEVY DEALER. IT HAS NOW BEEN THERE THREE TIMES IN A WEEK. BILL SAYS FRONT BRAKE PADS THIN, FRONT BRAKE ROTORS BADLY RUSTED, REPLACES FRONT BRAKE PADS AND BOTH FRONT BRAKE ROTORS. REAR BRAKE PADS THIN, REAR BRAKE ROTORS BADLY RUSTED, REPLACED REAR BRAKE PADS AND READ BRAKE ROTORS. I PICKED THE TRUCK UP AND WHEN I GOT HOME SMELLED SOMETHING VERY HOT. I COULD NOT TOUCH THE BACK TIRES AND TOOK IT BACK TO THE DEALER. PICKED IT UP AGAIN TODAY AND DROVE IT AND TOOK IT BACK TO THE DEALER WITH THE FRONT WHEELS HOT. THEY TELL ME THAT THEY HAVE NEVER HEARD OF THIS HAPPENING. I DON'T KNOW WHAT THEY WILL DO NEXT TO IT. *TR
NHTSA ODI #10355855
45,000 miles · Sep 15, 2010
Service Brakes, Hydraulic
ANTI-LOCK BRAKE MALFUNCTION CAUSING INCREASED STOPPING DISTANCES. THE VEHICLE WILL REQUIRE A LONGER THAN NORMAL STOPPING DISTANCE. INITIALLY THE PROBLEM WILL BE INTERMITTENT AND INCREASE TO EVERY TIME THE VEHICLE IS STOPPED AT SLOW SPEEDS (0-10MPH). THE SENSOR ON THE WHEEL BEARING NEEDS TO BE REMOVED AND CLEANED AND THE MOUNT…
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ANTI-LOCK BRAKE MALFUNCTION CAUSING INCREASED STOPPING DISTANCES. THE VEHICLE WILL REQUIRE A LONGER THAN NORMAL STOPPING DISTANCE. INITIALLY THE PROBLEM WILL BE INTERMITTENT AND INCREASE TO EVERY TIME THE VEHICLE IS STOPPED AT SLOW SPEEDS (0-10MPH). THE SENSOR ON THE WHEEL BEARING NEEDS TO BE REMOVED AND CLEANED AND THE MOUNTING SURFACE ALSO NEEDS TO BE CLEANED. *TR
NHTSA ODI #10355741
40,000 miles · Sep 14, 2010
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT WAS BRAKING FROM APPROXIMATELY 55 MPH WHEN THE BRAKE PEDAL ABNORMALLY DEPRESSED ALL THE WAY INTO THE FLOOR. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE CONTACT WAS INFORMED THAT THE BRAKE LINES AND CYLINDERS WERE CORRODED. THE VEHICLE WAS IN THE …
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TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT WAS BRAKING FROM APPROXIMATELY 55 MPH WHEN THE BRAKE PEDAL ABNORMALLY DEPRESSED ALL THE WAY INTO THE FLOOR. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE CONTACT WAS INFORMED THAT THE BRAKE LINES AND CYLINDERS WERE CORRODED. THE VEHICLE WAS IN THE PROCESS OF BEING REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 40,000.
NHTSA ODI #10355597
85,000 miles · Sep 9, 2010
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO. THE CONTACT STATED THAT WHILE TRYING TO STOP FOR A STOP LIGHT THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR. THE VEHICLE WAS TOWED TO A LOCAL MECHANIC WHERE THE BRAKE LINES IN THE REAR WERE REPLACED. THE REMEDY WAS SUCCESSFUL UNTIL 8/9/2010, WHEN THE FRONT BRAKES FAILED AGAIN U…
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TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO. THE CONTACT STATED THAT WHILE TRYING TO STOP FOR A STOP LIGHT THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR. THE VEHICLE WAS TOWED TO A LOCAL MECHANIC WHERE THE BRAKE LINES IN THE REAR WERE REPLACED. THE REMEDY WAS SUCCESSFUL UNTIL 8/9/2010, WHEN THE FRONT BRAKES FAILED AGAIN UNDER SIMILAR CIRCUMSTANCES. THE VEHICLE HAS BEEN REPAIRED BY REPLACING THE FRONT BRAKE LINES. THE FAILURE MILEAGE WAS APPROXIMATELY 85,000. THE CURRENT MILEAGE WAS 86,000.
NHTSA ODI #10354727
110,000 miles · Aug 13, 2010
Service Brakes, Hydraulic
BRAKE LINES ON REAR RUSTED IN HALF LEAKING OUT FLUID. *TR
NHTSA ODI #10349263
70,000 miles · Aug 10, 2010
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 5 MPH, THE ANTI LOCK SYSTEM ENGAGED AND THE BRAKES FAILED. HE STATED THAT THE BRAKE PEDAL ALMOST EXTENDED TO THE FLOOR. HE APPLIED EXCESSIVE FORCE TO THE BRAKES IN ORDER TO STOP THE FAILURE FROM OCCURRING. HE CALLED THE DEALER AND WAS ADVISED THAT T…
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. WHILE DRIVING APPROXIMATELY 5 MPH, THE ANTI LOCK SYSTEM ENGAGED AND THE BRAKES FAILED. HE STATED THAT THE BRAKE PEDAL ALMOST EXTENDED TO THE FLOOR. HE APPLIED EXCESSIVE FORCE TO THE BRAKES IN ORDER TO STOP THE FAILURE FROM OCCURRING. HE CALLED THE DEALER AND WAS ADVISED THAT THERE WERE NO RECALLS ASSOCIATED WITH HIS VIN. THE VEHICLE WAS NOT REPAIRED. THE FAILURE OCCURRED DAILY. THE APPROXIMATE FAILURE MILEAGE WAS 70,000. THE CURRENT MILEAGE WAS 70,120. UPDATED 12/21/10*BF UPDATED 12/23/10*JB
NHTSA ODI #10348504
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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