NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
151 reportsClear category filter50,000 miles · Mar 18, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE BRAKE LINE WAS SEVERELY RUSTED. THE CONTACT STATED THE VEHICLE WAS MOSTLY PARKED INSIDE A RESIDENTIAL GARAGE AND AWAY FROM THE ELEMENTS AND BELIEVED THE BRAKE LINES SHOULD NOT HAVE RUSTED. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR REPAIRS. THE CON…
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TL* THE CONTACT OWNS 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE BRAKE LINE WAS SEVERELY RUSTED. THE CONTACT STATED THE VEHICLE WAS MOSTLY PARKED INSIDE A RESIDENTIAL GARAGE AND AWAY FROM THE ELEMENTS AND BELIEVED THE BRAKE LINES SHOULD NOT HAVE RUSTED. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR REPAIRS. THE CONTACT STATED THAT HE HAD NOT EXPERIENCED A BRAKE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.
NHTSA ODI #10392153
42,000 miles · Mar 16, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT AS HE STARTED THE VEHICLE AND DEPRESSED THE BRAKES TO SHIFT TO PARK, THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND AFTER INSPECTION, THEY ADVISED THAT ALL OF THE BRAKE LINES WERE SEVERELY RUSTED. …
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TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT AS HE STARTED THE VEHICLE AND DEPRESSED THE BRAKES TO SHIFT TO PARK, THE BRAKE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND AFTER INSPECTION, THEY ADVISED THAT ALL OF THE BRAKE LINES WERE SEVERELY RUSTED. THE VEHICLE WAS REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 42,000. UPDATED 05/04/11 *BF UPDATED 11/04/11
NHTSA ODI #10390395
47,957 miles · Feb 27, 2011
Service Brakes, Hydraulic
BRAKE LINE CORROSION / FAILURE. BRAKE ROTOR CORROSION / FAILURE. *TR
NHTSA ODI #10384662
145,000 miles · Feb 24, 2011
Service Brakes, Hydraulic
TL*THE CONTACT WAS OPERATING A STATE OF MARYLAND FLEET 2003 CHEVROLET SILVERADO K1500 VEHICLE . WHILE DRIVING APPROXIMATELY 10 TO 20 MPH, THE BRAKE WERE APPLIED AND THE BRAKE PEDAL INITIALLY HAD BRAKING AND THE DEPRESSED TO THE FLOORBOARD WITH ZERO BRAKING. THE VEHICLE ROLLED THROUGH A RED LIGHT AND A HARD RIGHT TURN WAS MADE T…
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TL*THE CONTACT WAS OPERATING A STATE OF MARYLAND FLEET 2003 CHEVROLET SILVERADO K1500 VEHICLE . WHILE DRIVING APPROXIMATELY 10 TO 20 MPH, THE BRAKE WERE APPLIED AND THE BRAKE PEDAL INITIALLY HAD BRAKING AND THE DEPRESSED TO THE FLOORBOARD WITH ZERO BRAKING. THE VEHICLE ROLLED THROUGH A RED LIGHT AND A HARD RIGHT TURN WAS MADE TO AVOID A COLLISION AND DRIFTED TO A STOP USING LOW GEAR. AFTER STOPPING THE BRAKE RESERVOIR WAS CHECKED AND FOUND TO BE FULL. BRAKE FLUID WAS OBSERVED DRIPPING UNDER THE DRIVERS SEAT. THE TRUCK WAS TOWED TO A LOCAL REPAIR SHOP. THE CONTACT WAS INFORMED THE BRAKE LINES WERE SEVERELY CORRODED AND FRACTURED. THE VEHICLE WAS REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 145,000. UPDATED 03/23/11 *BF UPDATED 07/11/11
NHTSA ODI #10384362
115,000 miles · Feb 2, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING APPROXIMATELY BETWEEN 5-10 MPH APPROACHING A COMPLETE STOP WHEN SUDDENLY, THE ABS ACTIVATED SUDDENLY. THE CONTACT WAS ABLE TO CONTINUE WITH AN INCREASE IN STOPPING DISTANCE. ALSO, THE CONTACT DISABLED THE ABS FUSE. THE VEHICLE HAD NOT BEEN DIAGNOSED OR …
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING APPROXIMATELY BETWEEN 5-10 MPH APPROACHING A COMPLETE STOP WHEN SUDDENLY, THE ABS ACTIVATED SUDDENLY. THE CONTACT WAS ABLE TO CONTINUE WITH AN INCREASE IN STOPPING DISTANCE. ALSO, THE CONTACT DISABLED THE ABS FUSE. THE VEHICLE HAD NOT BEEN DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 115,000.
NHTSA ODI #10379926
Mileage unknown · Jan 25, 2011
Service Brakes, Hydraulic
ADDENDUM TO 10376833. VIN ENTERED BELOW. *TR
NHTSA ODI #10378611
26,000 miles · Jan 16, 2011
Service Brakes, Hydraulic
BRAKE LINE RUST-THROUGH CAUSING LONG STOPPING DISTANCES AND REQUIRING RAPID PEDAL PUMPING. LOSS OF FLUID REQUIRED REFILLS TO ALLOW THE VEHICLE TO BE DRIVEN TO A SHOP. NO COLLISION OCCURRED. CAB-BACK REPLACEMENT OF STEEL LINES TOOK PLACE AT A COST OF $475. *LN
NHTSA ODI #10376833
102,100 miles · Jan 15, 2011
Service Brakes, Hydraulic
I WAS BRAKING TO GET OFF AN EXIT RAMP, AND THE BRAKE PEDAL WENT TO THE FLOOR, BRAKE WARNING LIGHT CAME ON, AND WARNING BELL WAS RINGING. I WAS ABLE TO STOP VEHICLE WITHOUT HITTING ANYTHING BECAUSE I STAYED ON THE MAIN ROAD. IF I HAD TURNED DOWN THE EXIT RAMP, I WOULD HAVE REAR-ENDED STOPPED TRAFFIC AHEAD OF ME. THE CAUSE WAS A B…
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I WAS BRAKING TO GET OFF AN EXIT RAMP, AND THE BRAKE PEDAL WENT TO THE FLOOR, BRAKE WARNING LIGHT CAME ON, AND WARNING BELL WAS RINGING. I WAS ABLE TO STOP VEHICLE WITHOUT HITTING ANYTHING BECAUSE I STAYED ON THE MAIN ROAD. IF I HAD TURNED DOWN THE EXIT RAMP, I WOULD HAVE REAR-ENDED STOPPED TRAFFIC AHEAD OF ME. THE CAUSE WAS A BROKEN BRAKE LINE - BRAKE FLUID WAS DRIPPING FROM VEHICLE UNDER THE DRIVER'S DOOR. TOOK THE VEHICLE TO THE DEALER, AND WAS TOLD THAT ALL OF THE BRAKE LINES ON THE TRUCK HAD TO BE REPLACED DUE TO CORROSION. TOTAL COST ESTIMATE WAS $1800.00. *TR
NHTSA ODI #10376793
33,000 miles · Jan 13, 2011
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN THE VEHICLE REACHED TEN FEET OF ITS STOPPING DISTANCE, THE ANTI-LOCK BRAKE SYSTEM ACTIVATED AND STARTED TO PULSATE. THE VEHICLE ALSO BEGAN VIBRATING EXCESSIVELY. THE CONTACT TOOK THE VEHICLE TO A MECHANIC, WHO COULD NOT DETERMINE THE CAUSE OF FAILU…
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TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHEN THE VEHICLE REACHED TEN FEET OF ITS STOPPING DISTANCE, THE ANTI-LOCK BRAKE SYSTEM ACTIVATED AND STARTED TO PULSATE. THE VEHICLE ALSO BEGAN VIBRATING EXCESSIVELY. THE CONTACT TOOK THE VEHICLE TO A MECHANIC, WHO COULD NOT DETERMINE THE CAUSE OF FAILURE. THE CONTACT TOOK THE VEHICLE TO THE DEALER, BUT DID NOT HAVE IT DIAGNOSED. THE FAILURE MILEAGE WAS 33000 AND THE CURRENT MILEAGE WAS 35000. UPDATED 2/28/11 *CN UPDATED 04/29/11
NHTSA ODI #10376494
44,050 miles · Dec 28, 2010
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING 40 MPH AND APPLYING THE BRAKES, THE BRAKE PEDAL WENT INTO THE FLOORBOARD AND THE BRAKES WOULD NOT RESPOND. THE CONTACT HAD TO APPLY THE EMERGENCY BRAKE TO BRING THE VEHICLE TO A STOP. THE VEHICLE WAS TOWED TO A LOCAL REPAIR FACILITY WHERE A DI…
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TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING 40 MPH AND APPLYING THE BRAKES, THE BRAKE PEDAL WENT INTO THE FLOORBOARD AND THE BRAKES WOULD NOT RESPOND. THE CONTACT HAD TO APPLY THE EMERGENCY BRAKE TO BRING THE VEHICLE TO A STOP. THE VEHICLE WAS TOWED TO A LOCAL REPAIR FACILITY WHERE A DIAGNOSTIC TEST WAS PERFORMED AND LOCATED THE FAILURE AS A CORRODED BRAKE LINE CLIP. THE FAILURE WAS CAUSING THE BRAKE LINES TO DETERIORATE AND LEAK BRAKE FLUID. THE MECHANIC PARTIALLY REPAIRED THE BRAKE LINE CLIPS BUT ADVISED THAT EVENTUALLY, THE REMAINING CLIPS WOULD ALSO FAIL. THE FAILURE AND CURRENT MILEAGE WAS 44,050. UPDATED 12/14/2011 *CN UPDATED 05/20/11
NHTSA ODI #10372720
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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