NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
14 reportsClear category filter136,000 miles · Dec 4, 2017
Fuel/propulsion SystemPower TrainService Brakes
I PURCHASE THIS TRUCK 2/03/17 AND HAVE USED IT UNTIL 2 WEEKS AGE WHEN THE BRAKE LINES BROKE IN MY DRIVEWAY, I AM HAVING THE LINES REPLACED WITH STAINLESS LINES AT A COST OF ABOUT $1200 ( I AM NOT SURE OF THE TOTAL COST BECAUSE IT ALSO NEEDS A ANTILOCK BRAKING PUMP WHICH WAS BADLY CORRODED) THE FUEL LINGS ARE ALSO RUSTED AND NEED…
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I PURCHASE THIS TRUCK 2/03/17 AND HAVE USED IT UNTIL 2 WEEKS AGE WHEN THE BRAKE LINES BROKE IN MY DRIVEWAY, I AM HAVING THE LINES REPLACED WITH STAINLESS LINES AT A COST OF ABOUT $1200 ( I AM NOT SURE OF THE TOTAL COST BECAUSE IT ALSO NEEDS A ANTILOCK BRAKING PUMP WHICH WAS BADLY CORRODED) THE FUEL LINGS ARE ALSO RUSTED AND NEED TO BE REPLACED AND ALSO THE TRANSMISSION COOLING LINES NEED TO BE REPLACED AT A COST TO BE DETERMINED LATER. I HAVE A 1953 CHEVY PICKUP THAT STILL HAS GOOD BRAKE LINES AND THE FRAME IS IN BETTER SHAPE THAN THE NEWER ONES, IF GM LOOKED TO THE PAST AT THE MATERIALS & METHODS THEY MIGHT BUILD A BETTER PRODUCT RATHER THAN THE GARBAGE THEY PRODUCE NOW! I AM GLAD I DIDN'T PAY $30-$60,000 FOR THIS TRUCK.
NHTSA ODI #11052388
90,000 miles · Mar 15, 2014
Power Train
THE TRANSMISSION CAME OUT OF REVERSE, AND WOULD NOT RETURN. NO REVERSE OR DRIVE AT ALL. *TR
NHTSA ODI #10572554
138,000 miles · Aug 19, 2012
Power TrainService Brakes
FIRST THE TRANSMISSION COOLING LINES RUSTED OUT COSTING OVER 400.00 TO REPAIR. TODAY THE BRAKE LINES FAILED BECAUSE OF RUST. THIS WILL BE A VERY EXPENSIVE REPAIR. I WAS FORTUNATE THAT I WAS ABLE TO AVOID CRASHING THE TRUCK WHEN THE BRAKES FAILED. *TR
NHTSA ODI #10471448
52,000 miles · Jul 15, 2010
Power Train
TL* THE CONTACT OWNS A 2002 GMC SIERRA 2500. THE CONTACT STATED HE NOTICED AN UNUSUAL FLUID ON THE GROUND UNDER THE VEHICLE. UPON FURTHER INSPECTION, THE CONTACT FOUND THAT THE TRANSMISSION FLUID LINE COOLER METAL CLIP WAS CORRODED. THE CONTACT STATED THE CORROSION PENETRATED THE TRANSMISSION LINE AND CAUSED THE FLUID LEAK. THE …
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 2500. THE CONTACT STATED HE NOTICED AN UNUSUAL FLUID ON THE GROUND UNDER THE VEHICLE. UPON FURTHER INSPECTION, THE CONTACT FOUND THAT THE TRANSMISSION FLUID LINE COOLER METAL CLIP WAS CORRODED. THE CONTACT STATED THE CORROSION PENETRATED THE TRANSMISSION LINE AND CAUSED THE FLUID LEAK. THE DEALER ADVISED HAVING THE VEHICLE DIAGNOSED BEFORE PROCEEDING WITH ANY REPAIRS. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 52,000.
NHTSA ODI #10343468
117,000 miles · Apr 10, 2010
Power Train
WENT OUT TO THE TRUCK TO GO TO WORK AND THE TRUCK WOULDN'T MOVE. TRANSMISSION LINE LEAKING OUT ALL FLUID. CORRODED AND HAD TO BE REPLACE JUST LIKE THE BRAKE LINES. *TR
NHTSA ODI #10324863
100,100 miles · Jan 22, 2010
Power TrainCrash
LIMITED SLIP DIFFERENTIAL CAUSING LOSS OF CONTROL ON ICY ROADS. I RECENTLY LOST CONTROL OF MY TRUCK WHILE DRIVING ABOUT 45MPH ON AN ICY HIGHWAY IN BOULDER, CO. BECAUSE THE LOSS WAS SO INSTANTANEOUS RESULTING IN THE TRUCK SPINNING 90 DEGREES TO THE DIRECTION OF TRAVEL, I QUESTION IF THE LIMITED SLIP FUNCTION WOULD CAUSE POWER …
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LIMITED SLIP DIFFERENTIAL CAUSING LOSS OF CONTROL ON ICY ROADS. I RECENTLY LOST CONTROL OF MY TRUCK WHILE DRIVING ABOUT 45MPH ON AN ICY HIGHWAY IN BOULDER, CO. BECAUSE THE LOSS WAS SO INSTANTANEOUS RESULTING IN THE TRUCK SPINNING 90 DEGREES TO THE DIRECTION OF TRAVEL, I QUESTION IF THE LIMITED SLIP FUNCTION WOULD CAUSE POWER TO TRANSFER TO A WHEEL IF IT SUDDENLY HIT DRY PAVEMENT, WHILE THE OTHER WHEEL WAS SPINNING ON ICE, RESULTING IN A SPIN OUT. THIS IS ONLY MY THEORY BUT WITH 57 YEARS OF DRIVING EXPERIENCE AND THE FACT THAT I HAVE HAD WEIRD EXPERIENCES WITH LIMITED SLIP DIFFERENTIALS IN THE PAST I THOUGHT MY THEORY MAY HAVE SOME VALIDITY. MY CONCERN IS THAT THERE ARE MILLIONS VEHICLES WITH LIMITED SLIP DIFFERENTIALS ON THE ROAD AND IF MY THEORY IS VALID, PERHAPS MANY ACCIDENTS ARE BEING CAUSED BY THIS OPTION (WHICH CAME AS PART OF A PACKAGE WHEN I PURCHASED MY TRUCK). *TR
NHTSA ODI #10301929
131,520 miles · Jul 21, 2008
Power Train
TL*THE CONTACT OWNS A 2002 GMC SIERRA 2500. THE CONTACT NOTICED FLUID ON THE GROUND AND NOTICED THAT THE UNDERCARRIAGE TRANSFER CASE HAD A HOLE. HE SEALED THE HOLE. THE DEALER STATED THAT THE UNDERCARRIAGE TRANSFER GAUGE NEEDED TO BE REPLACED AT THE COST OF $2,000. THE MANUFACTURER IS AWARE OF THE FAILURE. THERE IS NO RECAL…
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TL*THE CONTACT OWNS A 2002 GMC SIERRA 2500. THE CONTACT NOTICED FLUID ON THE GROUND AND NOTICED THAT THE UNDERCARRIAGE TRANSFER CASE HAD A HOLE. HE SEALED THE HOLE. THE DEALER STATED THAT THE UNDERCARRIAGE TRANSFER GAUGE NEEDED TO BE REPLACED AT THE COST OF $2,000. THE MANUFACTURER IS AWARE OF THE FAILURE. THERE IS NO RECALL OR TECHNICAL SERVICE BULLETIN. THE FAILURE MILEAGE WAS 131.550 AND CURRENT MILEAGE IS 131,523. UPDATED 09/16/08 *BF UPDATED 09/19/08. *JB
NHTSA ODI #10235185
37,300 miles · Dec 27, 2006
Exterior LightingPower TrainService Brakes, Hydraulic
TL* - THE CONTACT CALLED ABOUT 2002 GMC SIERRA 2500 HD. HE STATED THAT WHILE APPLYING BRAKES, 7 OUT OF 10 TIMES THE ABS SYSTEM ACTIVATE\D AND PUMPED THE BRAKES. THIS HAPPENED AT ANY TIME OF THE DAY, AND IN ALL WEATHER CONDITIONS. THE CONTACT STATED THAT THIS HAPPENED WHEN APPLYING BRAKES AT ANY SPEED. THE BRAKES PUSHED BAC…
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TL* - THE CONTACT CALLED ABOUT 2002 GMC SIERRA 2500 HD. HE STATED THAT WHILE APPLYING BRAKES, 7 OUT OF 10 TIMES THE ABS SYSTEM ACTIVATE\D AND PUMPED THE BRAKES. THIS HAPPENED AT ANY TIME OF THE DAY, AND IN ALL WEATHER CONDITIONS. THE CONTACT STATED THAT THIS HAPPENED WHEN APPLYING BRAKES AT ANY SPEED. THE BRAKES PUSHED BACK AND THERE WAS A THUMPING NOISE COMING FROM THE MASTER CYLINDER. THE CONTACT LOOKED UP INFORMATION FROM THE NHTSA WEBSITE AND FOUND THAT A RECALL 05V379000 HAD BEEN ISSUED FOR THIS VEHICLE. THE CONTACT SAID THAT HE TOOK VEHICLE TO THE DEALERSHIP, AND WAS TOLD THAT THIS VEHICLE DID NOT FALL UNDER THE RECALL DUE TO VIN. *AK THE INNER TIE ROD HAD EXCESSIVE PLAY, THE FRONT DIFFERENTIAL SEAL WAS LEAKING FROM THE VENT CAP, THE DAYTIME RUNNING LIGHT BULB WAS INOPERATIVE. THE CONSUMER DENIED TO HAVE REPAIRS MADE. UPDATED 01/29/07. *JB
NHTSA ODI #10177052
32,000 miles · Nov 21, 2006
Engine And Engine CoolingPower Train
DT*: THE CONTACT STATED THE VEHICLE STALLED WHILE IN GEAR ON FOUR OCCASIONS. THE VEHICLE HAD NOT BEEN TO A SERVICE DEALER TO RESOLVE THE ISSUE. THE CONTACT EXPRESSED CONCERN THAT THIS WAS A DEFECT.*AK THE CRANKSHAFT POSITION SENSOR WAS REPLACED. UPDATED 12/15/06. *JB
NHTSA ODI #10174007
60,000 miles · Oct 27, 2006
Power Train
I OWN A 2002 GMC SIERRA 4 X 4 CREW CAB DURAMAX DIESEL PICK-UP TRUCK. FOR THE LAST 2 YEARS I'VE HAD A CONDITION THAT FELT LIKE A TIRE WAS OUT OF BALANCE. THIS WAS JUST AFTER I REPLACED ALL TIRES. THIS YEAR I REPLACED ALL THE TIRES AGAIN AND THE CONDITION STILL EXISTS. WE WENT THROUGH THE PROCESS OF ELIMINATION, CHANGING A WHEEL T…
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I OWN A 2002 GMC SIERRA 4 X 4 CREW CAB DURAMAX DIESEL PICK-UP TRUCK. FOR THE LAST 2 YEARS I'VE HAD A CONDITION THAT FELT LIKE A TIRE WAS OUT OF BALANCE. THIS WAS JUST AFTER I REPLACED ALL TIRES. THIS YEAR I REPLACED ALL THE TIRES AGAIN AND THE CONDITION STILL EXISTS. WE WENT THROUGH THE PROCESS OF ELIMINATION, CHANGING A WHEEL THAT WAS A LITTLE OUT OF ROUND, RE-BALANCING AND ROTATING THE NEW TIRES 4 DIFFERENT TIMES AND COULDN'T ELIMINATE THE PROBLEM. I THEN PUT THE VEHICLE UP ON A HOIST AND PUT THE TRANSMISSION IN GEAR TO CHECK FOR DRIVE LINE VIBRATIONS AND FOUND THAT THE REAR DRIVE SHAFT WAS BENT. AFTER TAKING THE TRUCK BACK TO MY DEALERSHIP AND CONFIRMING THE PROBLEM WITH THEM, A SEARCH WAS RUN OF ALL THE SALVAGE FACILITIES FOR A USED SHAFT AND FOUND THAT THERE WERE NONE AVAILABLE. FURTHERMORE, EVERY SALVAGE YARD THAT WAS CONTACTED CLAIMED THAT THIS DRIVE SHAFT, GM PART #15109384 WAS IN HIGH DEMAND AND AS SOON AS ONE CAME IN ON A WRECK, IT WAS IMMEDIATELY SOLD. THIS SHAFT IS INSTALLED ON 2000 TO 2007 MODELS. MY DEALERSHIP ALSO ADMITTED THAT MINE WAS NOT THE FIRST BENT DRIVE SHAFT THAT HAS COME INTO THEIR FACILITY. TO PURCHASE A NEW SHAFT IS ALMOST $900. A USED ONE IS MUCH LESS, IF YOU CAN FIND ONE. I WORKED WITH GM TRUCK IN QUALITY CONTROL FOR 31 YEARS AND IT IS MY EXPERIENCE THAT WHEN A USED PART CAN NOT BE PURCHASED THROUGH A SALVAGE YARD DUE TO HIGH REPLACEMENT DEMAND, THERE IS USUALLY A COVER UP GOING ON. PLEASE LOOK INTO THIS MATTER. BY THE WAY, MY SHAFT HAD NO VISIBLE EVIDENCE OF DAMAGE ANYPLACE. I BELIEVE THAT THE SHAFT MAY NOT BE ABLE TO HANDLE THE TORQUE OF THE ENGINE AND WILL, IN TIME, BEND. MY TRUCK HAS 99,000 MILES ON IT NOW, BUT THE PROBLEM STARTED SOMETIME AROUND 60,000. *NM
NHTSA ODI #10172005
NHTSA investigations
3EA07013 · Trailer Hitch Receiver Failure
Opened Sep 14, 2007 · Closed Sep 12, 2008
Status: closed (inferred from source dates) · Trailer Hitches
COMPLAINT REPORTS ALLEGE POOR WELD QUALITY AND/OR BENDING OF THE SUBJECT VEHICLE ORIGINAL EQUIPMENT TRAILER HITCH RECEIVER.THE AGENCY'S INVESTIGATION INCLUDED ANALYSIS OF MANUFACTURER AND AGENCY INCIDENT REPORTS, REVIEW OF POLICE REPORTS, ANALYSIS OF THE AGENCY'S FATAL ANALYSIS REPORTING SYSTEM, A VEHICLE OWNER SURVEY, INSPECTION OF TOW VEHICLES/HITCHES AND ANALYSIS OF FAILED PARTS.INCIDENTS OF WELD FAILURE WERE RARE AND ASSOCIATED WITH VERY LOW-SPEED DRIVING (TURNING, BACKING AND SUDDEN STOPPING).INCIDENTS OF BENDING WERE ASSOCIATED WITH IMPROPER TRAILER HITCH ADJUSTMENT OR OVERLOADING. A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.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 THIS ISSUE AND RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE DOCUMENT SEARCH FILE FOR ADDITION INFORMATION.
PE07025 · Trailer Hitch Receiver Failure
Opened May 14, 2007 · Closed Sep 14, 2007
Status: closed (inferred from source dates) · Trailer Hitches
GM PROVIDED ADDITIONAL DATA REGARDING ALLEGATIONS OF FAILURE OF THE TRAILER HITCH.ODI REVIEWED THAT AS WELL AS OTHER DATA PROVIDED BY PEER MANUFACTURERS.BASED ON OUR REVIEW, ODI FINDS THE NEED TO FURTHER INVESTIGATE THIS ISSUE.THIS PRELIMINARY EVALUATION IS UPGRADED TO AN ENGINEERING ANALYSIS (EA07-013) FOR FURTHER ASSESSMENT AND STUDY OF THIS ISSUE.
PE04004 · Hydraulic Pump Shaft Failures
Opened Jan 8, 2004 · Closed Apr 30, 2004
Status: closed (inferred from source dates) · Service Brakes, Hydraulic; Service Brakes, Hydraulic:power Assist; Service Brakes, Hydraulic:power Assist:hydraulic; Steering:hydraulic Power Assist System; Steering:hydraulic Power Assist:pump
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Additional source detail variants (5)
Service Brakes, Hydraulic
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Service Brakes, Hydraulic:power Assist
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Service Brakes, Hydraulic:power Assist:hydraulic
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Steering:hydraulic Power Assist:pump
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Steering:hydraulic Power Assist System
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
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