NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes complaints
88 reportsClear category filterMileage unknown · Aug 9, 2025
Service Brakes
I pulled the truck out of the garage in working condition, left it running while parked in the driveway. It emptied the entire brake fluid reservoir through a leak in the distribution junction on the rear axle, leaving the truck with no brake function whatsoever. Had I not parked the truck in the driveway, I would have been invo…
Read full complaint
I pulled the truck out of the garage in working condition, left it running while parked in the driveway. It emptied the entire brake fluid reservoir through a leak in the distribution junction on the rear axle, leaving the truck with no brake function whatsoever. Had I not parked the truck in the driveway, I would have been involved in a serious collision due to sudden complete brake failure.
NHTSA ODI #11679616
Mileage unknown · Sep 20, 2021
Service Brakes
While driving on US60 East of Lexington Kentucky I was preparing to turn left using the left turn lane. There was another car in front of mine and as I approached it I began to lightly apply the brakes. The brake pedal went all the way to the floor with no decrease in speed. Fortunately I was able to switch back to the through l…
Read full complaint
While driving on US60 East of Lexington Kentucky I was preparing to turn left using the left turn lane. There was another car in front of mine and as I approached it I began to lightly apply the brakes. The brake pedal went all the way to the floor with no decrease in speed. Fortunately I was able to switch back to the through lane and avoid an accident. While I was able to avoid an accident there was definitely a risk of injury to myself and the occupants of the other vehicle. When I was able to inspect the vehicle I found that the brakeline adjacent to the fuel tank was rusted through which caused a complete brake failure. I do the vehicle maintenance personally and have since made necessary repairs to the brake system. I was aware of problems with the brakelines on this vintage truck being prone to failure due to rusting. As I was making repairs it was obvious the routing of the brakelines was such as to making the rusting more likely to happen.
NHTSA ODI #11433593
182,000 miles · Apr 26, 2021
Service Brakes
HARD BRAKE LINE FAILURE DUE TO CORROSION FROM POOR QUALITY PARTS WITHOUT PROPER CORROSION PROTECTION OR CORRECT MATERIALS (I.E. STAINLESS STEEL VS MILD STEEL) WHEN VEHICLE IS USED IN AREAS WHERE DE-ICER IS USED ON THE ROADS.
NHTSA ODI #11413971
265,000 miles · Mar 19, 2021
Service BrakesSteeringWheels
THE ABS LIGHT CAME ON AND THE BRAKE LIGHT. THE POWER STEERING IS BAD AND THE STEERING WHEEL SHAKES WHEN I BRAKE, I GOT THE BRAKES AND ROTORS CHANGED AND THE PROBLEM PERSISTED
NHTSA ODI #11403813
267,000 miles · Nov 8, 2020
Fuel/propulsion SystemService Brakes
MY ABS SPEED SENSOR GOT SHEARED BY BACK OF MY FRONT DRIVERS SIDE TIRE IN WHICH I HAVE SEEN ON MULTIPLE SIGHTS A DEFECT THAT WAS DEEMED A RECALL FOR BEING POORLY SET UP ON THE ASSEMBLY LINE. SECONDLY, IVE SPENT THOUSANDS AND LOOKING ONLINE FOR A VARY SERIOUS ISSUE IVE BEEN HAVING WITH MY VEHICLE DUE TO INTERMEDIATE STALLING, BACK…
Read full complaint
MY ABS SPEED SENSOR GOT SHEARED BY BACK OF MY FRONT DRIVERS SIDE TIRE IN WHICH I HAVE SEEN ON MULTIPLE SIGHTS A DEFECT THAT WAS DEEMED A RECALL FOR BEING POORLY SET UP ON THE ASSEMBLY LINE. SECONDLY, IVE SPENT THOUSANDS AND LOOKING ONLINE FOR A VARY SERIOUS ISSUE IVE BEEN HAVING WITH MY VEHICLE DUE TO INTERMEDIATE STALLING, BACKFIRING, AND VEHICLE DIEING DUE TO WHAT HAS FINALLY BEEN FOUND TO BE THE INFAMOUS CRANKSHAFT SENSOR. REPLACED MY COMPUTER, ALL 02 SENSORS, EGR VALVE EXC... THAN UPON LOOKING AND RESEARCHING, I FIND IT WAS A MAJOR ONE ON RECALL AS WELL FOR FAILING ALL THE TIME. I JUST FEEL IF THESE ARE FACTORY ERRORS AND BEEN ON THE RECALL, AND MY WOMAN WHO TRAVELS WITH ME THAT IS PARALYZED DUE TO AN ACCIDENT, I SHOULD BE ENTITILED TO THE RECALLS GIVING THEY WERE KNOWN FLAWS ON THE ASSSEMBLY LINE AND A DANGER TO OTHERS. WHEN THE VEHICLE STALLS OUT, IT STARTS CHOKING, BACKFIRING, AND BUCKING AND WANTS TO LOCK UP AND LOOSE CONTROL. NOT COOL. IVE BEEN CHASING THIS PROBLEM SPENDING THOUSANDS IN PARTS AND REPAIRS TO MAKE THIS TRUCK SAFE FOR WORK AND FEEL IF THERE HAS BEEN RECALLS FOR ALL THIS, WOULD BE NICE TO REAP SOMETHING OUT OF MY INVESTMENT IN THIS TRUCK
NHTSA ODI #11373725
143,000 miles · Aug 4, 2020
Service BrakesCrashInjury
DRIVING UP TO CITY INTERSECTION WAS APPLING BRAKES, CAR IN FRONT APPLIED HIS QUICKER CAUSING HIS REAR TO RAISE UP, INDICATING PANIC STOP, I FOLLOWED AND APPLIED HARD PRESSURE TO MY BRAKES, PEDAL THEN WENT TO THE FLOOR AND LOST ALL BRAKE ACTION, THIS LEAD TO MY TRUCK REAR END OF OTHER CARS
NHTSA ODI #11343261
75,000 miles · Aug 17, 2018
Service Brakes
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. WHILE DRIVING 25 MPH, THE BRAKE PEDAL WAS DEPRESSED AND TRAVELED TO THE FLOORBOARD. THE CONTACT NOTICED A LEAK COMING FROM THE BRAKE LINE AND RUST. THE CONTACT DID NOT ENGAGE THE EMERGENCY BRAKE. THE CONTACT WAS UNSURE IF ANY WARNING INDICATORS WERE ILLUMINATED. THE DEALER AN…
Read full complaint
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. WHILE DRIVING 25 MPH, THE BRAKE PEDAL WAS DEPRESSED AND TRAVELED TO THE FLOORBOARD. THE CONTACT NOTICED A LEAK COMING FROM THE BRAKE LINE AND RUST. THE CONTACT DID NOT ENGAGE THE EMERGENCY BRAKE. THE CONTACT WAS UNSURE IF ANY WARNING INDICATORS WERE ILLUMINATED. THE DEALER AND MANUFACTURER WERE NOT CONTACTED. THE FAILURE RECURRED, BUT THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 75,000.
NHTSA ODI #11120595
170,000 miles · Jul 28, 2017
Service Brakes
BRAKE LINES RUSTED OUT CAUSING VEHICLE TO LOOSE BRAKING ABILITY AND AN ACCIDENT WITH MINOR VEHICLE DAMAGE..
NHTSA ODI #11011197
200,000 miles · Nov 15, 2016
Service Brakes
EXCESSIVE METAL BRAKE LINE CORROSION ON THIS VEHICLE. BRAKE LINES CORRODED THROUGH CAUSING AN IMMEDIATE LOSS OF BRAKE FLUID AND RESULTED IN ZERO BRAKING ABILITY WHILE VEHICLE WAS IN MOTION ON A BUSY CITY STREET. EMERGENCY BRAKE WAS DEPRESSED TO BRING VEHICLE TO A STOP. INFERIOR MATERIALS HAVE BEEN USED TO PRODUCE BRAKE LINES …
Read full complaint
EXCESSIVE METAL BRAKE LINE CORROSION ON THIS VEHICLE. BRAKE LINES CORRODED THROUGH CAUSING AN IMMEDIATE LOSS OF BRAKE FLUID AND RESULTED IN ZERO BRAKING ABILITY WHILE VEHICLE WAS IN MOTION ON A BUSY CITY STREET. EMERGENCY BRAKE WAS DEPRESSED TO BRING VEHICLE TO A STOP. INFERIOR MATERIALS HAVE BEEN USED TO PRODUCE BRAKE LINES ON THIS VEHICLE. BRAKE LINE PLACEMENT IN CONJUNCTION WITH INFERIOR METAL THAT IS PRONE TO CORROSION IS AT FAULT. COST TO REPAIR THIS FLAW IN MANUFACTURING WILL BE NEARLY $2000.00
NHTSA ODI #10926216
90,000 miles · Aug 25, 2016
Service Brakes
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE THE VEHICLE WAS STOPPED WITH THE BRAKE PEDAL ENGAGED, THE VEHICLE BEGAN TO INDEPENDENTLY ROLL FORWARD WITHOUT WARNING. THE BRAKE PEDAL WAS DEPRESSED TO THE FLOORBOARD BEFORE THE VEHICLE EVENTUALLY STOPPED. THE CONTACT INSPECTED THE VEHICLE AND DISCOVERED THAT THE BRA…
Read full complaint
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE THE VEHICLE WAS STOPPED WITH THE BRAKE PEDAL ENGAGED, THE VEHICLE BEGAN TO INDEPENDENTLY ROLL FORWARD WITHOUT WARNING. THE BRAKE PEDAL WAS DEPRESSED TO THE FLOORBOARD BEFORE THE VEHICLE EVENTUALLY STOPPED. THE CONTACT INSPECTED THE VEHICLE AND DISCOVERED THAT THE BRAKE LINES WERE RUSTED THROUGH. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 90,000.
NHTSA ODI #10898426
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.
Illustration