NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
68 reportsClear category filter185,000 miles · Feb 8, 2016
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET TAHOE. THE CONTACT STATED THAT WHILE DRIVING OUT OF THE DRIVEWAY AND DEPRESSING THE BRAKE PEDAL, THE BRAKE PEDAL PULSATED AND THE VEHICLE FAILED TO RESPOND WITHOUT WARNING. THE CONTACT CONTINUED TO DEPRESS THE BRAKE PEDAL AND THE VEHICLE HESITATED TO RESPOND. THE FAILURE RECURRED ON SEVERAL …
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TL* THE CONTACT OWNS A 2002 CHEVROLET TAHOE. THE CONTACT STATED THAT WHILE DRIVING OUT OF THE DRIVEWAY AND DEPRESSING THE BRAKE PEDAL, THE BRAKE PEDAL PULSATED AND THE VEHICLE FAILED TO RESPOND WITHOUT WARNING. THE CONTACT CONTINUED TO DEPRESS THE BRAKE PEDAL AND THE VEHICLE HESITATED TO RESPOND. THE FAILURE RECURRED ON SEVERAL OCCASIONS WHILE DRIVING AT LOW SPEEDS OF 5 MPH OR LESS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 05V379000 (SERVICE BRAKES, HYDRAULIC). THE APPROXIMATE FAILURE MILEAGE WAS 185,000. UPDATED 04/13/16*LJ THE CONSUMER STATED THE BRAKES FUNCTIONED PROPERLY WHEN THE ABS WAS DISCONNECTED. UPDATED 04/20/16
NHTSA ODI #10824759
40,000 miles · Dec 6, 2014
Electrical SystemService Brakes, HydraulicWheels
I AM THE ORIGINAL OWNER OF A 2002 CHEVROLET TAHOE THAT EXPERIENCED ABS CUT-IN AT LOW SPEEDS IN DRY WEATHER IN 2005 AND WAS RECALLED UNDER CAMPAIGN 05V379000 / NHTSA ACTION NUMBER : PE05020. THE CUT-IN PROBLEM HAS RECENTLY RETURNED, WITH EXACT SAME SYMPTOMS AS BEFORE. I CALLED GM AS THE ORIGINAL RECALL NO LONGER APPEARS TO BE …
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I AM THE ORIGINAL OWNER OF A 2002 CHEVROLET TAHOE THAT EXPERIENCED ABS CUT-IN AT LOW SPEEDS IN DRY WEATHER IN 2005 AND WAS RECALLED UNDER CAMPAIGN 05V379000 / NHTSA ACTION NUMBER : PE05020. THE CUT-IN PROBLEM HAS RECENTLY RETURNED, WITH EXACT SAME SYMPTOMS AS BEFORE. I CALLED GM AS THE ORIGINAL RECALL NO LONGER APPEARS TO BE IN EFFECT, BUT THEY DO NOT APPEAR TO BE WILLING/ABLE TO COVER ANY REPAIRS AGAINST THAT RECALL DESPITE THE CORROSION TREATMENT AND LUBRICATION OBVIOUSLY NOT BEING A PERMANENT FIX. OTHER GM VEHICLES IMPACTED BY THE ABS ISSUE AND WHICH ARE STILL IN SERVICE WILL BEGIN TO EXPERIENCE SIMILAR FAILURES AND NHTSA AND GM NEED TO RECOGNIZE THE ORIGINAL ISSUE HAS NOT BEEN RESOLVED AND TAKE ACTION. *TR
NHTSA ODI #10662533
137,000 miles · Sep 29, 2014
Service BrakesService Brakes, Hydraulic
THE ABS KICKS IN AT SLOW SPEEDS WHILE STOPPING IN NORMAL CONDITIONS. HAD ALL NEW BRAKES PUT ON AND THE PROBLEM CONTINUES. CHECKED RECALL STATUS ON MY VEHICLE AND THE YEAR AND SYMPTOMS OF RECALL WERE FOUND AT NHTSA ID#05V379000 / GM RECALL #05068. CALLED CHEVY AND THEY SAID MY VEHICLE DIDN'T QUALIFY FOR RECALL DUE TO IT'S VIN. …
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THE ABS KICKS IN AT SLOW SPEEDS WHILE STOPPING IN NORMAL CONDITIONS. HAD ALL NEW BRAKES PUT ON AND THE PROBLEM CONTINUES. CHECKED RECALL STATUS ON MY VEHICLE AND THE YEAR AND SYMPTOMS OF RECALL WERE FOUND AT NHTSA ID#05V379000 / GM RECALL #05068. CALLED CHEVY AND THEY SAID MY VEHICLE DIDN'T QUALIFY FOR RECALL DUE TO IT'S VIN. VERY UPSET BECAUSE MY VEHICLE FITS EXACTLY WHAT IS ON RECALL AND GM WONT FIX IT. *TR
NHTSA ODI #10640008
Mileage unknown · Aug 12, 2014
Service Brakes, Hydraulic
2002 CHEVROLET TAHOE. CONSUMER WRITES IN REGARDS TO VEHICLE BRAKE LINE CORROSION. *SMD THE CONSUMER LOST BRAKING WITHOUT WARNING. HE WAS ABLE TO AVOID A SERIOUS ACCIDENT. THE VEHICLE WAS TOWED TO THE DEALER AND UPON INSPECTION, IT WAS FOUND THAT ONE OF THE REAR BRAKE LINES HAD RUPTURED DUE TO BRAKE LINE CORROSION, WHICH CAUSE…
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2002 CHEVROLET TAHOE. CONSUMER WRITES IN REGARDS TO VEHICLE BRAKE LINE CORROSION. *SMD THE CONSUMER LOST BRAKING WITHOUT WARNING. HE WAS ABLE TO AVOID A SERIOUS ACCIDENT. THE VEHICLE WAS TOWED TO THE DEALER AND UPON INSPECTION, IT WAS FOUND THAT ONE OF THE REAR BRAKE LINES HAD RUPTURED DUE TO BRAKE LINE CORROSION, WHICH CAUSED A LOSS OF BRAKE FLUID. IN ADDITION, THE FRONT BRAKE LINES EXHIBITED THE SAME PROBLEM. *JB
NHTSA ODI #10619618
117,000 miles · Feb 7, 2014
Service BrakesService Brakes, HydraulicCrash
EA11001 BRAKE PEDAL SUDDENLY WENT TO THE FLOOR DURING BRAKING, HIT POLE. REPAIR CENTER SHOWED ME A BATCH OF RUSTED BRAKE LINES ENTERING THE ABS BOX UNDERNEATH THE DRIVERS SIDE DOOR. THERE WAS FLUID LEAKING FROM THAT GROUP OF LINES, FOUR OF THEM TOGETHER. SEARCHING THE INTERNET, I HAVE FOUND THERE ARE THOUSANDS OF COMPLAINTS A…
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EA11001 BRAKE PEDAL SUDDENLY WENT TO THE FLOOR DURING BRAKING, HIT POLE. REPAIR CENTER SHOWED ME A BATCH OF RUSTED BRAKE LINES ENTERING THE ABS BOX UNDERNEATH THE DRIVERS SIDE DOOR. THERE WAS FLUID LEAKING FROM THAT GROUP OF LINES, FOUR OF THEM TOGETHER. SEARCHING THE INTERNET, I HAVE FOUND THERE ARE THOUSANDS OF COMPLAINTS AND NEWS SHOWS ABOUT THIS ISSUE AND YET, YOU HAVE DONE LITTLE. WHY ? I HAVE TWO OF THESE VEHICLES GREY [XXX] AND GREEN [XXX] AND THEY BOTH HAVE THIS ISSUE! - WTF ? AND THEY DO NOT WORK WITH 1/2 THE SYSTEM AS STATED IN EA11001 - THE PEDAL GOES TO THE FLOOR! THIS IS SEVERELY DANGEROUS! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10563361
134,000 miles · Sep 18, 2013
Service BrakesService Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET TAHOE. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, HE APPLIED THE BRAKE AND THE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD. THE VEHICLE FAILED TO DECELERATE AND THERE WAS AN EXTREME INCREASE IN STOPPING TIME. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC AND THE CONTACT WAS INFORMED TH…
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TL* THE CONTACT OWNS A 2002 CHEVROLET TAHOE. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, HE APPLIED THE BRAKE AND THE PEDAL ABNORMALLY TRAVELED TO THE FLOORBOARD. THE VEHICLE FAILED TO DECELERATE AND THERE WAS AN EXTREME INCREASE IN STOPPING TIME. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC AND THE CONTACT WAS INFORMED THAT ONE OF THE BRAKE LINES SUFFERED FROM SEVERE CORROSION AND WOULD NEED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 134,000. ..UPDATED 10-22-13*BF
NHTSA ODI #10544205
180,000 miles · Jun 25, 2013
Service BrakesService Brakes, Hydraulic
FIRST RECALL AS: NHTSA CAMPAIGN ID NUMBER : 05V379000 I HAVE EXPERIENCED UNWANTED ANTI-LOCK BRAKE ACTIVATION DURING LOW SPEED BRAKING. THIS HAS OCCURRED SEVERAL TIMES IN THE PAST YEAR (2012-2013), WHICH WOULD HAVE RESULTED IN A CRASH WITHOUT EVASIVE MANEUVERS AND LUCK. I HAVE CALLED CHEVROLET SEVERAL TIMES TO ASK ABOUT THE …
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FIRST RECALL AS: NHTSA CAMPAIGN ID NUMBER : 05V379000 I HAVE EXPERIENCED UNWANTED ANTI-LOCK BRAKE ACTIVATION DURING LOW SPEED BRAKING. THIS HAS OCCURRED SEVERAL TIMES IN THE PAST YEAR (2012-2013), WHICH WOULD HAVE RESULTED IN A CRASH WITHOUT EVASIVE MANEUVERS AND LUCK. I HAVE CALLED CHEVROLET SEVERAL TIMES TO ASK ABOUT THE ORIGINAL RECALL, WHICH MY VEHICLE WAS A PART IN. MY VEHICLE WAS SERVICED IN THE FIRST RECALL, WHICH REQUIRES THE TECHNICIANS TO INSPECT AND CLEAN THE SPEED SENSORS. WELL I GUESS THE SENSORS HAVE BECOME DIRTY AGAIN AND SYMPTOMS ARE RECURRING (VEHICLE HAS BEEN IN THE "SALT BELT" AREA ITS ENTIRE LIFE). CHEVROLET WILL NOT SERVICE VEHICLE UNDER CURRENT RECALL. I STILL SEE MANY OF THESE POPULAR VEHICLES ON THE ROAD AND THINK THAT THEIR SENSORS MAY TOO BECOME DIRTY AGAIN CAUSING ACCIDENTS. I THINK THAT IT IS DUE DILIGENCE FOR CHEVROLET TO CONTINUE TO "CLEAN" THESE SENSORS SINCE THEY HAVE ISSUED A PREVIOUS RECALL AND THE ONLY FIX WAS TO "CLEAN" THE SENSOR AND SURFACE. THANK YOU FOR YOUR TIME. *TR
NHTSA ODI #10521631
136,000 miles · Jul 13, 2012
EngineService BrakesService Brakes, Hydraulic
I HAD A BRAKE FAILURE ON MY 2002 TAHOE AFTER DRIVING AT HWY SPEEDS THEN COMING OFF THE EXIT TO STOP; THE, SERVICE BRAKES LIGHT CAME ON. I THEN ATTEMPTED TO BRAKE AND THE PEDAL WENT ALL THE WAY TO THE FLOOR MAKING IT VERY DIFFICULT TO BRAKE.. , COULD HAVE BEEN CATASTROPHIC, AND OR DEADLY; I DROVE HOME 2 MILES AWAY, VERY SLOWLY…
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I HAD A BRAKE FAILURE ON MY 2002 TAHOE AFTER DRIVING AT HWY SPEEDS THEN COMING OFF THE EXIT TO STOP; THE, SERVICE BRAKES LIGHT CAME ON. I THEN ATTEMPTED TO BRAKE AND THE PEDAL WENT ALL THE WAY TO THE FLOOR MAKING IT VERY DIFFICULT TO BRAKE.. , COULD HAVE BEEN CATASTROPHIC, AND OR DEADLY; I DROVE HOME 2 MILES AWAY, VERY SLOWLY; I HAD VERY LITTLE BRAKE CONTROL.(TWO INFANTS IN THE CAR AT THE TIME) TWO OUT OF FOUR BRAKE LINES COMPLETELY RUSTED WITH A HOLE; BRAKE FLUID LEAKED OUT QUICKLY AT TIME OF INCIDENT ..LIKE HUNDREDS, AND THOUSANDS OF OTHER COMPLAINTS OF SAME EXACT PROBLEM. THE BRAKES THEMSELVES ARE FINE., . TO REPLACE ALL FOUR OF MY BRAKE LINES , IT COST ME $858($813 W/COUPON). RECALL ID # 05V379000 - SERVICE BRAKES, HYDRAULIC:ANTILOCK MAY ADDRESS THE PROBLEM IF YOU GET TO IT DONE BEFORE THE LINES COMPLETELY FAIL. APPLYING RUST INHIBITOR TO YOUR BRAKE LINES MAY ALSO HELP. THIS COULD HAVE BEEN COMPLETELY AVOIDED SINCE MANY HAVE COMPLAINED. THE MECHANIC DID NOT MENTION A RECALL WHEN FIXING THE BRAKE LINES. *TR
NHTSA ODI #10465492
162,604 miles · May 8, 2012
Service Brakes, Hydraulic
I JUST WAS TOLD BY THE GM DEALER THAT MY BRAKE LINES ARE RUSTED OUT AND NEED TO BE REPLACED AS THEY WILL EVENTUALLY FAIL. I HAVE ONLY 160,500 MILES ON THE VEHICLE. THE CHEVROLET DEALER SAID THAT GM WILL NOT COVER COSTS OF $1,200. NEVER HAD ANY PRIOR CHEVY TAHOE'S THAT I OWNED HAVE ANY ISSUES LIKE THIS. *TR
NHTSA ODI #10457768
200,000 miles · Apr 16, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET TAHOE. THE CONTACT STATED THAT AFTER TAKING THE VEHICLE TO THE DEALER FOR ROUTINE SERVICE, HE WAS ADVISED THAT ALL OF THE BRAKE LINES WERE SEVERELY RUSTED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED NOR WAS THE MANUFACTURER CONTACTED. THE FAILURE AND THE CURRENT MILEAGES WERE APP…
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TL* THE CONTACT OWNS A 2002 CHEVROLET TAHOE. THE CONTACT STATED THAT AFTER TAKING THE VEHICLE TO THE DEALER FOR ROUTINE SERVICE, HE WAS ADVISED THAT ALL OF THE BRAKE LINES WERE SEVERELY RUSTED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED NOR WAS THE MANUFACTURER CONTACTED. THE FAILURE AND THE CURRENT MILEAGES WERE APPROXIMATELY 200,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10455334
Official recalls
3Aug 29, 2005
CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES MAY EXPERIENCE UNWANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS. THIS RECALL WILL BE LAUNCHED IN THE "SALT BELT" STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MARYLAND, MASSACHUSETTS, MAINE, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN AND THE DISTRICT OF COLUMBIA ONLY.
Consequence & remedy
Consequence: THIS CAN CAUSE INCREASED STOPPING DISTANCES DURING LOW-SPEED BRAKE APPLICATIONS, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS ARE TO REMOVE THE WHEEL SPEED SENSOR AND THOROUGHLY CLEAN THE WHEEL SPEED SENSOR MOUNTING SURFACE ON THE BEARING, APPLY RUST INHIBITOR TO THE CLEANED SURFACE, GREASE THE MOUNTING SURFACE, REINSTALL THE WHEEL SPEED SENSOR, AND CHECK THE PEAK-TO-PEAK OUTPUT VOLTAGE TO ENSURE THE WHEEL SPEED SIGNAL IS WITHIN SPECIFICATIONS. THE RECALL BEGAN SEPTEMBER 22, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463.
Mar 7, 2003
CERTAIN PICKUP TRUCK, VAN, AND MINI VAN CONVERSIONS EQUIPPED WITH SOUTHERN COMFORT BUILT RUNNING BOARDS THAT CONTAIN CERTAIN COURTESY LIGHTS MANUFACTURED BY AMERICAN TECHNOLOGY COMPONENTS, INC. THESE UNITS CONTAIN A COURTESY LIGHT OR LIGHTS THAT MIGHT OVERHEAT WHEN THE WIRE HARNESS IS EXPOSED TO EXCESSIVE MOISTURE AND ROAD SALT.
Consequence & remedy
Consequence: THIS OVERHEATING CONDITION CAN CAUSE THE RUNNING BOARD TO MELT OR CAUSE A FIRE.
Remedy: DEALERS WILL REPLACE THE WIRING HARNESS ON THESE RUNNING BOARDS. OWNER NOTIFICATION BEGAN MARCH 7, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT SOUTHERN COMFORT AT 1-800-745-6096.
Sep 17, 2002
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH REARWARD FOLDING HEAD RESTRAINTS ON THE SECOND ROW SEATS, TWO POTENTIAL PINCH POINTS EXIST ON EACH OF THE FOLDING HEAD RESTRAINTS WHEN THE RESTRAINTS ARE FOLDED REARWARD AS THE SEATBACK IS FOLDED DOWN.
Consequence & remedy
Consequence: IF A PERSON WERE TO INSERT THEIR FINGER(S) INTO THE PINCH POINT WHEN THE HEAD RESTRAINT FOLDS, IT COULD TRAP AND PINCH THE FINGER(S) CAUSING INJURY.
Remedy: DEALERS WILL INSTALL PROTECTIVE COVERS OVER THE PINCH POINTS. OWNER NOTIFICATION BEGAN NOVEMBER 8, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020, GMC AT 1-800-462-8782, OR CADILLAC AT 1-800-458-8006.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
5EA11001 · 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
DP05009 · Parking Brake Failure
Opened Dec 20, 2005 · Closed May 31, 2006
Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Additional source detail variants (3)
Parking Brake:conventional
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Parking Brake:conventional:mechanical
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Parking Brake
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
PE05020 · Unwanted LOW-SPEED Abs Activation
Opened Apr 28, 2005 · Closed Sep 13, 2005
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip; Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
IN A LETTER DATED AUGUST 29, 2005, GM NOTIFIED ODI THAT IT WAS RECALLING CERTAIN MODEL YEAR 1999 THROUGH 2002 C/K PICKUP TRUCKS AND SPORT UTILITY VEHICLES TO CORRECT A PROBLEM WITH ANTI-LOCK BRAKE SYSTEM (ABS) WHEEL SPEED SENSOR CORROSION THAT MAY RESULT IN UNWANTED ABS ACTIVATION AND EXTENDED STOPPING DISTANCES DURING LOW-SPEED BRAKING (RECALL 05V-379).GM'S RECALL COVERS APPROXIMATELY 804,000 VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING 14 SALT-BELT STATES:CONNECTICUT, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, AND WEST VIRGINIA.THE RECALL PROCEDURE WILL INVOLVE REMOVING THE SENSOR, CLEANING THE MOUNTING SURFACE, APPLYING A RUST INHIBITOR (ZINC-X) TO THE SURFACE, AND REINSTALLING THE SENSOR.IF NECESSARY, THE SENSOR WILL BE REPLACED. THE POPULATION AND FAILURE REPORT DATA GIVEN IN THIS RESUME ARE FOR THE FULL REGION THAT HAS BEEN CONSIDERED BY ODI AS THE SALT-BELT.THAT INCLUDES DELAWARE, IOWA, MARYLAND, MINNESOTA, MISSOURI, WISCONSIN AND THE DISTRICT OF COLUMBIA IN ADDITION TO THE 14 STATES INCLUDED IN 05V-379.THE STATES COVERED BY GM'S RECALL HAVE THE HIGHEST INCIDENT RATES FOR THE SUBJECT CONDITION, ACCOUNTING FOR 91% OF THE INCIDENTS, BUT ONLY 24% OF SUBJECT VEHICLE SALES IN THE UNITED STATES.ODI'S ANALYSIS DETERMINED THAT 840 OF THE COMPLAINTS, 244 OF THE CRASHES, AND 16 OF THE INJURIES IDENTIFIED IN THIS INVESTIGATION OCCURRED IN THOSE STATES.THE RESULTING INCIDENT AND CRASH RATES ARE 96.2 AND 28.0 PER 100,000 VEHICLES RESPECTIVELY (NOTE:RATES ARE BASED ON VEHICLE SALES, NOT REGISTERED VEHICLES). THE CORRESPONDING NUMBERS IN THE EXCLUDED PORTIONS OF THE SALT-BELT ARE 399,000 VEHICLES, 81 INCIDENTS (20.3 PER 100,000 VEHICLES), 3 CRASHES, AND NO INJURIES.THE STATISTICS IN THE REMAINING 30 STATES ARE 2,406,000 VEHICLES, 168 INCIDENTS (7.0 PER 100,000 VEHICLES), 31 CRASHES, AND ONE INJURY.GM AND ODI ARE CONTINUING TO MONITOR THE PROBLEM EXPERIENCE IN STATES THAT ARE NOT INCLUDED IN THE RECALL.GM WILL PROVIDE ODI WITH UPDATED COMPLAINT, FIELD REPORT, AND WARRANTY DATA IN NOVEMBER 2005.ODI AND GM WILL REVIEW THAT DATA AND ASSESS THE APPROPRIATENESS OF THE CURRENT SCOPE OF THE RECALL AT THAT TIME.
Additional source detail variants (2)
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
IN A LETTER DATED AUGUST 29, 2005, GM NOTIFIED ODI THAT IT WAS RECALLING CERTAIN MODEL YEAR 1999 THROUGH 2002 C/K PICKUP TRUCKS AND SPORT UTILITY VEHICLES TO CORRECT A PROBLEM WITH ANTI-LOCK BRAKE SYSTEM (ABS) WHEEL SPEED SENSOR CORROSION THAT MAY RESULT IN UNWANTED ABS ACTIVATION AND EXTENDED STOPPING DISTANCES DURING LOW-SPEED BRAKING (RECALL 05V-379).GM'S RECALL COVERS APPROXIMATELY 804,000 VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING 14 SALT-BELT STATES:CONNECTICUT, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, AND WEST VIRGINIA.THE RECALL PROCEDURE WILL INVOLVE REMOVING THE SENSOR, CLEANING THE MOUNTING SURFACE, APPLYING A RUST INHIBITOR (ZINC-X) TO THE SURFACE, AND REINSTALLING THE SENSOR.IF NECESSARY, THE SENSOR WILL BE REPLACED. THE POPULATION AND FAILURE REPORT DATA GIVEN IN THIS RESUME ARE FOR THE FULL REGION THAT HAS BEEN CONSIDERED BY ODI AS THE SALT-BELT.THAT INCLUDES DELAWARE, IOWA, MARYLAND, MINNESOTA, MISSOURI, WISCONSIN AND THE DISTRICT OF COLUMBIA IN ADDITION TO THE 14 STATES INCLUDED IN 05V-379.THE STATES COVERED BY GM'S RECALL HAVE THE HIGHEST INCIDENT RATES FOR THE SUBJECT CONDITION, ACCOUNTING FOR 91% OF THE INCIDENTS, BUT ONLY 24% OF SUBJECT VEHICLE SALES IN THE UNITED STATES.ODI'S ANALYSIS DETERMINED THAT 840 OF THE COMPLAINTS, 244 OF THE CRASHES, AND 16 OF THE INJURIES IDENTIFIED IN THIS INVESTIGATION OCCURRED IN THOSE STATES.THE RESULTING INCIDENT AND CRASH RATES ARE 96.2 AND 28.0 PER 100,000 VEHICLES RESPECTIVELY (NOTE:RATES ARE BASED ON VEHICLE SALES, NOT REGISTERED VEHICLES). THE CORRESPONDING NUMBERS IN THE EXCLUDED PORTIONS OF THE SALT-BELT ARE 399,000 VEHICLES, 81 INCIDENTS (20.3 PER 100,000 VEHICLES), 3 CRASHES, AND NO INJURIES.THE STATISTICS IN THE REMAINING 30 STATES ARE 2,406,000 VEHICLES, 168 INCIDENTS (7.0 PER 100,000 VEHICLES), 31 CRASHES, AND ONE INJURY.GM AND ODI ARE CONTINUING TO MONITOR THE PROBLEM EXPERIENCE IN STATES THAT ARE NOT INCLUDED IN THE RECALL.GM WILL PROVIDE ODI WITH UPDATED COMPLAINT, FIELD REPORT, AND WARRANTY DATA IN NOVEMBER 2005.ODI AND GM WILL REVIEW THAT DATA AND ASSESS THE APPROPRIATENESS OF THE CURRENT SCOPE OF THE RECALL AT THAT TIME.
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip
IN A LETTER DATED AUGUST 29, 2005, GM NOTIFIED ODI THAT IT WAS RECALLING CERTAIN MODEL YEAR 1999 THROUGH 2002 C/K PICKUP TRUCKS AND SPORT UTILITY VEHICLES TO CORRECT A PROBLEM WITH ANTI-LOCK BRAKE SYSTEM (ABS) WHEEL SPEED SENSOR CORROSION THAT MAY RESULT IN UNWANTED ABS ACTIVATION AND EXTENDED STOPPING DISTANCES DURING LOW-SPEED BRAKING (RECALL 05V-379).GM'S RECALL COVERS APPROXIMATELY 804,000 VEHICLES CURRENTLY REGISTERED IN THE FOLLOWING 14 SALT-BELT STATES:CONNECTICUT, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, AND WEST VIRGINIA.THE RECALL PROCEDURE WILL INVOLVE REMOVING THE SENSOR, CLEANING THE MOUNTING SURFACE, APPLYING A RUST INHIBITOR (ZINC-X) TO THE SURFACE, AND REINSTALLING THE SENSOR.IF NECESSARY, THE SENSOR WILL BE REPLACED. THE POPULATION AND FAILURE REPORT DATA GIVEN IN THIS RESUME ARE FOR THE FULL REGION THAT HAS BEEN CONSIDERED BY ODI AS THE SALT-BELT.THAT INCLUDES DELAWARE, IOWA, MARYLAND, MINNESOTA, MISSOURI, WISCONSIN AND THE DISTRICT OF COLUMBIA IN ADDITION TO THE 14 STATES INCLUDED IN 05V-379.THE STATES COVERED BY GM'S RECALL HAVE THE HIGHEST INCIDENT RATES FOR THE SUBJECT CONDITION, ACCOUNTING FOR 91% OF THE INCIDENTS, BUT ONLY 24% OF SUBJECT VEHICLE SALES IN THE UNITED STATES.ODI'S ANALYSIS DETERMINED THAT 840 OF THE COMPLAINTS, 244 OF THE CRASHES, AND 16 OF THE INJURIES IDENTIFIED IN THIS INVESTIGATION OCCURRED IN THOSE STATES.THE RESULTING INCIDENT AND CRASH RATES ARE 96.2 AND 28.0 PER 100,000 VEHICLES RESPECTIVELY (NOTE:RATES ARE BASED ON VEHICLE SALES, NOT REGISTERED VEHICLES). THE CORRESPONDING NUMBERS IN THE EXCLUDED PORTIONS OF THE SALT-BELT ARE 399,000 VEHICLES, 81 INCIDENTS (20.3 PER 100,000 VEHICLES), 3 CRASHES, AND NO INJURIES.THE STATISTICS IN THE REMAINING 30 STATES ARE 2,406,000 VEHICLES, 168 INCIDENTS (7.0 PER 100,000 VEHICLES), 31 CRASHES, AND ONE INJURY.GM AND ODI ARE CONTINUING TO MONITOR THE PROBLEM EXPERIENCE IN STATES THAT ARE NOT INCLUDED IN THE RECALL.GM WILL PROVIDE ODI WITH UPDATED COMPLAINT, FIELD REPORT, AND WARRANTY DATA IN NOVEMBER 2005.ODI AND GM WILL REVIEW THAT DATA AND ASSESS THE APPROPRIATENESS OF THE CURRENT SCOPE OF THE RECALL AT THAT TIME.
PE03026 · Steel Wheel Rim Fracture
Opened Jun 12, 2003 · Closed Nov 3, 2003
Status: closed (inferred from source dates) · Wheels; Wheels:multi Piece; Wheels:rim
THERE HAVE BEEN LESS THAN 2 COMPLAINTS PER 100,000 SUBJECT VEHICLES RELATED TO THE ALLEGED DEFECT.THE OLDEST VEHICLES (MY 1999) HAVE ONLY 2 COMPLAINTS IN OVER 140 THOUSAND VEHICLES AFTER OVER 4 YEARS IN SERVICE.THE RATE OF WARRANTY CLAIMS POTENTIALLY RELATED TO THE ALLEGED DEFECT IS LESS THAN 0.1%.THERE ARE NO KNOWN INCIDENTS INVOLVING RAPID LOSS OF TIRE PRESSURE OR LOSS OF VEHICLE CONTROL. A DEFECT TREND 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 NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
Additional source detail variants (3)
Wheels
THERE HAVE BEEN LESS THAN 2 COMPLAINTS PER 100,000 SUBJECT VEHICLES RELATED TO THE ALLEGED DEFECT.THE OLDEST VEHICLES (MY 1999) HAVE ONLY 2 COMPLAINTS IN OVER 140 THOUSAND VEHICLES AFTER OVER 4 YEARS IN SERVICE.THE RATE OF WARRANTY CLAIMS POTENTIALLY RELATED TO THE ALLEGED DEFECT IS LESS THAN 0.1%.THERE ARE NO KNOWN INCIDENTS INVOLVING RAPID LOSS OF TIRE PRESSURE OR LOSS OF VEHICLE CONTROL. A DEFECT TREND 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 NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
Wheels:multi Piece
THERE HAVE BEEN LESS THAN 2 COMPLAINTS PER 100,000 SUBJECT VEHICLES RELATED TO THE ALLEGED DEFECT.THE OLDEST VEHICLES (MY 1999) HAVE ONLY 2 COMPLAINTS IN OVER 140 THOUSAND VEHICLES AFTER OVER 4 YEARS IN SERVICE.THE RATE OF WARRANTY CLAIMS POTENTIALLY RELATED TO THE ALLEGED DEFECT IS LESS THAN 0.1%.THERE ARE NO KNOWN INCIDENTS INVOLVING RAPID LOSS OF TIRE PRESSURE OR LOSS OF VEHICLE CONTROL. A DEFECT TREND 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 NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
Wheels:rim
THERE HAVE BEEN LESS THAN 2 COMPLAINTS PER 100,000 SUBJECT VEHICLES RELATED TO THE ALLEGED DEFECT.THE OLDEST VEHICLES (MY 1999) HAVE ONLY 2 COMPLAINTS IN OVER 140 THOUSAND VEHICLES AFTER OVER 4 YEARS IN SERVICE.THE RATE OF WARRANTY CLAIMS POTENTIALLY RELATED TO THE ALLEGED DEFECT IS LESS THAN 0.1%.THERE ARE NO KNOWN INCIDENTS INVOLVING RAPID LOSS OF TIRE PRESSURE OR LOSS OF VEHICLE CONTROL. A DEFECT TREND 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 NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
EA02015 · Throttle Sticking Closed
Opened Aug 1, 2002 · Closed Jan 12, 2004
Status: closed (inferred from source dates) · Vehicle Speed Control:linkages
THIS INVESTIGATION INVOLVES THE GENERAL MOTORS CORPORATION (GM)THROTTLE BODY (TB) UTILIZED IN MODEL YEAR (MY) 1999-2002 SILVERADO, SIERRA, TAHOE, SUBURBAN, AVALANCHE AND YUKON (SUBJECT VEHICLE(S)) WITH 4.8L, 5.3L, AND 6.0L ENGINES. THE TB VALVE MAY INTERMITTENTLY STICK IN A CLOSED POSITION.IN SUCH A SITUATION, AN OPERATOR MAY APPLY ADDITIONAL ACCELERATOR PEDAL FORCE TO INCREASE ENGINE SPEED.THE APPLICATION OF ADDITIONAL ACCELERATOR PEDAL FORCE, TO OPEN A STUCK THROTTLE VALVE, MAY OPEN THE THROTTLE VALVE MORE THAN INTENDED AND, IN TURN, ACCELERATE THE ENGINE AND VEHICLE MORE THAN INTENDED AND REASONABLY EXPECTED BY THE DRIVER.ON AUGUST 1, 2002, THE OFFICE OF DEFECTS INVESTIGATION (ODI), OF THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION (NHTSA), OPENED THIS ENGINEERING ANALYSIS.THE INVESTIGATION REVEALED THAT TWO FACTORS MAY CAUSE THE DEFECT: 1) TB MANUFACTURING PROCESS PROBLEMS; AND 2) ACCUMULATION OF DEPOSITS (A PCV SYSTEM BY-PRODUCT) ON OR AROUND THE TB THROTTLE VALVE AND BORE.ODI CONCLUDES THAT THE TB PERFORMS IN A DEFECTIVE MANNER AFTER ANALYZING GM?S DATA SUBMISSIONS, AND TEST DATA COLLECTED BY THE VEHICLE RESEARCH AND TEST CENTER (VRTC).FIFTY-NINE CRASHES ARE ALLEGED TO HAVE OCCURRED AS A RESULT OF GM?S TB DEFECT.THE MAJORITY OF THE CRASHES INVOLVE A SINGLE VEHICLE, ENGAGING IN A CLOSE QUARTER VEHICLE MANEUVER (OR LOW SPEED), AND CAUSING ONLY MINOR PROPERTY DAMAGE.FOUR OUT OF THE FIFTY-NINE CRASHES INVOLVE INJURY, AND THOSE INJURIES WERE MINOR.ALTHOUGH GM?S TB IS DEFECTIVE, BASED ON THE EVIDENCE GATHERED, ODI HAS FOUND THAT THE ACCELERATOR PEDAL FORCE REQUIRED TO OPEN A STUCK THROTTLE VALVE IS NEGLIGIBLE, AND THE THROTTLE VALVE DOES NOT STICK IN THE OPEN POSITION.THEREFORE THIS ENGINEERING ANALYSIS (EA02-015) WILL BE CLOSED AT THIS TIME.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.FOR A DETAILED DISCUSSION OF THE TB COMPONENT AND TESTING, PLEASE SEE THE ATTACHED REPORT.
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