NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
351 reports31,000 miles · Jan 11, 2005
Visibility
THE DEFROSTER KICKES ON IN THE MIDDLE OF DRIVING, SINCE I GOT THIS TRUCK. I WILL BE DRIVING DOWN THE RD, AND ALL OF THE SUDDEN MY WINDSHIELD FOGGES UP VERY RAPIDLY. LAST TIME, A SEMI WAS BEHIND US AND MY WIFE AND SON WERE WITH ME. WE WERE ALMOST KILLED!!!MY WARRANTY WAS VERY SHORT LIVED SINCE THIS WAS USED WHEN I BOUGH IT. MY WI…
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THE DEFROSTER KICKES ON IN THE MIDDLE OF DRIVING, SINCE I GOT THIS TRUCK. I WILL BE DRIVING DOWN THE RD, AND ALL OF THE SUDDEN MY WINDSHIELD FOGGES UP VERY RAPIDLY. LAST TIME, A SEMI WAS BEHIND US AND MY WIFE AND SON WERE WITH ME. WE WERE ALMOST KILLED!!!MY WARRANTY WAS VERY SHORT LIVED SINCE THIS WAS USED WHEN I BOUGH IT. MY WIFE, AND SON ALSO DRIVE CHEVYS & GMC.I HAVE TAKEN IT TO DEALERS BUT THEY SAY I HAVE TO PAY 100'S OF DOLLARS TO REPAIR IT, THEN IT MAY NOT BE REPAIRABLE THAT IT IS AUTOMATIC. WE WILL NEVER BUY GMC OR CHEVY AGAIN. IT ISNT EVEN SAFE TO DRIVE IN THIS VEHICLE!IT HAPPENS ALL THE TIME!*AK
NHTSA ODI #10106109
35,500 miles · Jan 3, 2005
Service Brakes, HydraulicCrashInjury
BRAKES FAILED TO STOP THE TRUCK (BRAKE PEDAL GOES ALL THE WAY TO THE FLOOR IN AN EMERGENCY SITUATION) I TOOK THE TRUCK BACK TO THE DEALER AND THEY FOUND THE HYDRO BOOST TO THE BRAKES TO BE LEAKING FLIUD. THEY REPLACED THE PART, IT HELPED THE BRAKES SOME BUT DID NOT TAKE CARE OF THE PROBLEM. THE PROBLEM IS WHEN YOU ARE ON A POTHO…
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BRAKES FAILED TO STOP THE TRUCK (BRAKE PEDAL GOES ALL THE WAY TO THE FLOOR IN AN EMERGENCY SITUATION) I TOOK THE TRUCK BACK TO THE DEALER AND THEY FOUND THE HYDRO BOOST TO THE BRAKES TO BE LEAKING FLIUD. THEY REPLACED THE PART, IT HELPED THE BRAKES SOME BUT DID NOT TAKE CARE OF THE PROBLEM. THE PROBLEM IS WHEN YOU ARE ON A POTHOLE OR WASHBOARD ROAD AND USE THE BRAKES THE PEDAL WILL GO ALL THE WAY TO THE FLOOR AND WILL NOT STOP THE TRUCK AT ALL. WHEN YOU STOP ON A SMOOTH ROAD THE BRAKES SEEM TO WORK FINE. TTHE ONLY OTHER THING THAT IS A REAL CONCERN TO ME IS WHEN YOU ARE JUST SITTING IN THE TRUCK WETHER IT IS RUNNING OR NOT YOU CAN PUSH ON THE BRAKE PEDAL WITH LITTLE EFFORT AND IT WILL GO ALL THE WAY TO THE FLOOR. I HAVE TAKEN THE TRUCK TO TWO DIFFERENT DEALERS TO TRY AND GET MY PROBLEM SOLVED. THE MECHANICS AGREE THAT IT SHOULDN'T DO WHAT ITS DOING BUT CAN'T FIND THE PROBLEM. THERE ARE TIMES WHEN IT IS DARGEROUS TO DRIVE THE TRUCK . *AK
NHTSA ODI #10105676
6,000 miles · Dec 22, 2004
Power Train
PUMP RETAINING PIN ON THE TRANSFER CASE FAILED, PERMITTING THE PUMP TO WEAR A HOLE IN THE TRANSFER CASE WITH SUDDEN RELEASE OF THE ENGINE OIL. CHEVROLET IS NOT CLAIMING KNOWLEDGE. *JB
NHTSA ODI #10104338
24,000 miles · Nov 7, 2004
Engine And Engine Cooling
CHEVY SILVERADO 2500 HD W/ 6L ENGINE-- PROBLEM WITH THROTTLE STICKING. CARBONS UP EVERY TWO MONTHS AROUND THROTTLE VALVE AND THROTTLE STICKS. THEN TAKES EXCESSIVE THROTTLE PRESSURE TO TRY TO MOVE. ---IS A SERIOUS SAFETY ISSUE WHEN MOVING IN TIGHT QUARTERS. CHEVY HAS ISSUED SERVICE MODIFICATIONS FOR 5.3L AND 4.8L ENGINES FOR SAM…
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CHEVY SILVERADO 2500 HD W/ 6L ENGINE-- PROBLEM WITH THROTTLE STICKING. CARBONS UP EVERY TWO MONTHS AROUND THROTTLE VALVE AND THROTTLE STICKS. THEN TAKES EXCESSIVE THROTTLE PRESSURE TO TRY TO MOVE. ---IS A SERIOUS SAFETY ISSUE WHEN MOVING IN TIGHT QUARTERS. CHEVY HAS ISSUED SERVICE MODIFICATIONS FOR 5.3L AND 4.8L ENGINES FOR SAME PROBLEM BUT HAS IGNORED THE 6.0L. CLEANING THE CARBON WORKS FOR ONLY TWO MONTHS THEN PROBLEM RECURS. CHEVY SHOULD MAKE A FIELD FIX LIKE THE OTHER MODELS BEFORE SOMEONE GETS HURT. *JB
NHTSA ODI #10098406
66,000 miles · Oct 20, 2004
Wheels
I DROVE MY TRUCK UNDER NORMAL DRIVING CONDITIONS; PRIMARILY COMMUTING TO AND FROM WORK (HIGHWAY MILES). AT ~ 66,000 MILES, FRONT LEFT HUB ASSEMBLY STARTED MAKING INTERMITTENT NOISE AND NOTICEABLE VIBRATION IN STEERING WHEEL. THE HUB/TIRE/WHEEL ASSEMBLY HAD NOTICEABLE AMOUNT OF PLAY WHEN I INSPECTED IT DURING A RECENT TIRE CHAN…
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I DROVE MY TRUCK UNDER NORMAL DRIVING CONDITIONS; PRIMARILY COMMUTING TO AND FROM WORK (HIGHWAY MILES). AT ~ 66,000 MILES, FRONT LEFT HUB ASSEMBLY STARTED MAKING INTERMITTENT NOISE AND NOTICEABLE VIBRATION IN STEERING WHEEL. THE HUB/TIRE/WHEEL ASSEMBLY HAD NOTICEABLE AMOUNT OF PLAY WHEN I INSPECTED IT DURING A RECENT TIRE CHANGEOUT. ULTIMATELY, THE HUB ASSEMBLY INTERNALS FAILED AND THE LUBRICATION ESCAPED FROM THE SEAL. IT IS MY OPINION THAT IF LEFT UNCHECKED, THE HUB COULD LOSE ALL LUBRICATION AND EITHER FREEZE UP, FALL APART OR CATCH FIRE. IT IS NOT NORMAL FOR A HUB TO FAIL AFTER ONLY 68,000 MILES. DEALER CONFIRMS THIS BY TELLING ME THAT THEY'VE NOT SEEN MANY IF ANY 3/4 TON TRUCKS COME THROUGH WITH THIS TYPE OF PROBLEM. I SUSPECT THAT THE PART WAS DEFECTIVE FROM THE MANUFACTURER, BUT CANNOT PROVE THIS. I WOULD BE HAPPY TO LET THE NHTSA TAKE IT APART AND INSPECT IT AND HEAR OF THEIR CONCLUSION. I AM ALREADY OUT THE $400+ DOLLARS TO FIX THIS PROBLEM. CHEVROLET CUSTOMER "DIS-SERVICE" WOULD NOT ADMIT TO ANY RESPONSIBILITY WHEN I OFFERED TO MEET THEM "HALF-WAY" AND PAY FOR THE LABOR IF THEY WOULD PAY FOR THE PART. IF THE NHTSA WOULD LIKE TO INSPECT THE PART, PLEASE FEEL FREE TO CONTACT ME. THANK YOU FOR YOUR WEBSITE. I HOPE NO ONE ELSE HAS THE SAME PROBLEM AS I'VE HAD (WITH MY TRUCK AND GM). THANKS FOR YOUR TIME AND FEEDBACK!
NHTSA ODI #10096104
Mileage unknown · Sep 8, 2004
Fuel System, Gasoline
WHILE DRIVING INJECTOR PUT FUEL INTO THE OIL PAN. THE SES LIGHT ILLUMINATED. TOOK THE VEHICLE TO THE DEALER. THEY SUPPOSEDLY FIXED IT.CONSUMER WAS CONCERNED WITH COLLATERAL DAMAGES TO THE ENGINE. *AK
NHTSA ODI #10091552
22,198 miles · May 26, 2004
Power Train
VEHICLE CLUNKS WHEN SHIFTING BETWEEN GEARS AND WILL JUMP BETWEEN GEARS. WILL NOT SHIFT INTO OVERDRIVE UNTIL 65MPH OR A DISTANCE OF APPROXIMATELY 12 MILES. LOSS OF REVERSE. HAS BEEN TO DEALER UNDER WARRANTY TWICE AT MILEAGE OF 25,000 MILES.
NHTSA ODI #10073183
22,750 miles · Mar 31, 2004
TiresCrash
BLOWOUT OF BRIDGESTONE DUELLER AT 693, LT285/75R/16, DOT NO.EJLFCCB2501 CAUSING LOSS OF VEHICLE CONTROL AND $4,000.00 DAMAGE TO TRUCK. NEAR TOTAL LOSS OF VEHICLE CONTROL CAUSING VEHICLE TO LEAVE ROADWAY.*AK *MR
NHTSA ODI #10055092
Mileage unknown · Feb 24, 2004
Structure
THE CABLE ON ONE SIDE OF MY CHEVROLET PICKUP GATE BROKE CAUSING THE GATE TO FALL ONTO THE BUMPER. AFTER PURCHASING A NEW PAIR OF CABLES FROM THE DEALER I NOTICED THAT THE GATE WAS NOT PROPERLY ALIGNED CAUSING THE WEIGHT OF THE GATE TO BE PLACED ALL ON ONE CABLE. I ALERTED THE DEALERSHIP TO THIS PROBLEM WHICH THEY LOOKED AT AND…
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THE CABLE ON ONE SIDE OF MY CHEVROLET PICKUP GATE BROKE CAUSING THE GATE TO FALL ONTO THE BUMPER. AFTER PURCHASING A NEW PAIR OF CABLES FROM THE DEALER I NOTICED THAT THE GATE WAS NOT PROPERLY ALIGNED CAUSING THE WEIGHT OF THE GATE TO BE PLACED ALL ON ONE CABLE. I ALERTED THE DEALERSHIP TO THIS PROBLEM WHICH THEY LOOKED AT AND SUGGESTED THAT I COULD MAKE SOME ADJUSTMENTS TO THE TAILGATE TO FIX THE PROBLEM. I TRIED TO MAKE AN ADJUSTMENT BUT COULD NOT GET ANY MOVEMENT IN THE TAILGATE SO I AM STILL DRIVING WITH THE PROBLEM.*AK
NHTSA ODI #10058826
40,546 miles · Jan 5, 2004
Structure
I WAS LOADING MY CARGO INTO MY 2002 CHEVROLET HD2500 AND BOTH THE TAILGATE CABLES BROKE SPILLING ME AND MY 4-WHEELER ON TO THE GROUND. I WAS NOT HURT, BUT IT WAS VERY DANGEROUS.*AK
NHTSA ODI #10052428
NHTSA investigations
4EA07013 · 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.
EA04012 · Hydraulic Pump Failres
Opened Apr 30, 2004 · Closed Feb 28, 2005
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:power Assist; Steering:hydraulic Power Assist System
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
Additional source detail variants (2)
Service Brakes, Hydraulic:power Assist
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
Steering:hydraulic Power Assist System
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
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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