NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
43 reportsClear category filter57,490 miles · May 23, 2010
Engine And Engine Cooling
UPON STARTING MY 2002 CHEVROLET SILVERADO WITH DURAMAX ENGINE TO MOVE IT BACKWARDS 40 FEET TO HOOKUP A TRAILER, I HAD NO APPARENT POWER ASSIST ON BRAKES OR STEERING. A SECOND ATTEMPT TO RESTART THE ENGINE AND BACK UP RESULTED IN THE SAME RESULT, NO POWER ASSIST ON STEERING OR BRAKES. A THIRD ATTEMPT TO MOVE THE TRUCK PROVED S…
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UPON STARTING MY 2002 CHEVROLET SILVERADO WITH DURAMAX ENGINE TO MOVE IT BACKWARDS 40 FEET TO HOOKUP A TRAILER, I HAD NO APPARENT POWER ASSIST ON BRAKES OR STEERING. A SECOND ATTEMPT TO RESTART THE ENGINE AND BACK UP RESULTED IN THE SAME RESULT, NO POWER ASSIST ON STEERING OR BRAKES. A THIRD ATTEMPT TO MOVE THE TRUCK PROVED SUCCESSFUL. THIS IS FIRST TIME THIS CONDITION HAS APPEARED ON THIS VEHICLE. *TR
NHTSA ODI #10331863
74,834 miles · Dec 29, 2009
Engine And Engine Cooling
FUEL INJECTORS FAILED AND HAVE TO BE REPLACED. DUE TO PRIOR CLASS ACTION LAWSUIT WARRANTY WAS EXTENDED TO 200K MILES / 7 YEARS. AT 8 YEARS AND 75,000 MILES MINE FAILED. GM REFUSES TO REPLACE / EXTEND WARRANTY. MANY OTHER CUSTOMERS REPORT SAME PROBLEM AND RECURRING. COST TO REPAIR...$5200. GM SHOULD BE REQUIRED TO RECALL PA…
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FUEL INJECTORS FAILED AND HAVE TO BE REPLACED. DUE TO PRIOR CLASS ACTION LAWSUIT WARRANTY WAS EXTENDED TO 200K MILES / 7 YEARS. AT 8 YEARS AND 75,000 MILES MINE FAILED. GM REFUSES TO REPLACE / EXTEND WARRANTY. MANY OTHER CUSTOMERS REPORT SAME PROBLEM AND RECURRING. COST TO REPAIR...$5200. GM SHOULD BE REQUIRED TO RECALL PARTS, REIMBURSE CURRENT AND PRIOR REPAIRS. *TR
NHTSA ODI #10297308
100,145 miles · Nov 13, 2009
Engine And Engine Cooling
I CURRENTLY DRIVE A 2002 CHEVY SILVERADO 2500HD WITH AN 8.1L ENGINE. I'VE NOW TAKEN MY TRUCK INTO FOUR DIFFERENT MECHANICS FOR THE SAME ISSUE. MY TRUCK WILL RANDOMLY SHUT OFF THE ENGINE. I'VE HAD IT SHUT OFF AT STOPLIGHTS, AT HIGHWAY SPEEDS, DRIVING AROUND TOWN, AND EVERYTHING IN-BETWEEN. OCCASIONALLY, IT WON'T EVEN START. …
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I CURRENTLY DRIVE A 2002 CHEVY SILVERADO 2500HD WITH AN 8.1L ENGINE. I'VE NOW TAKEN MY TRUCK INTO FOUR DIFFERENT MECHANICS FOR THE SAME ISSUE. MY TRUCK WILL RANDOMLY SHUT OFF THE ENGINE. I'VE HAD IT SHUT OFF AT STOPLIGHTS, AT HIGHWAY SPEEDS, DRIVING AROUND TOWN, AND EVERYTHING IN-BETWEEN. OCCASIONALLY, IT WON'T EVEN START. IT SOUNDS LIKE IT WANTS TO TURN OVER BUT TO NO AVAIL. AND WHEN IT STOPS, IT TAKES ABOUT 5 MINUTES TO FINALLY GET IT RESTARTED AND DRIVING AGAIN. OF COURSE, NO MECHANIC CAN EVER FIGURE OUT WHAT'S WRONG SINCE IT WON'T ACT UP IN THE SHOP. I'VE HAD THEM TELL ME IT COULD BE A HOST OF THINGS FROM AIR PROBLEMS TO FUEL LINE PROBLEMS TO ELECTRICAL ISSUES. NO ONE CAN GIVE ME A STRAIGHT ANSWER. I'VE EVEN HAD ONE MECHANIC DROP MY FUEL TANK TO INSPECT THE PUMP TO SEE IF IT'S THE PROBLEM. EVEN THEN, NOTHING ACTED UP. THERE NOW IS A CODE SHOWING UP SAYING MY CRANK SENSOR IS FAULTY. ALMOST EVERY MECHANIC IS CONVINCED IT'S MY FUEL PUMP BUT I HAVE GREAT PRESSURE IN THE LINES. I'VE NOTICED SEVERAL PEOPLE WITH MY SAME YEAR AND ENGINE HAVE HAD SIMILAR ISSUES. AS WELL, I NOTICED THERE WAS A RECALL FOR THE CRANK SENSORS ON 2001 MODELS BUT NOT 2002 MODELS. WHY IS THIS? I THINK THERE'S JUST AS MANY ISSUES IN THAT YEAR AS THERE ARE IN FOLLOWING YEARS. THIS ISSUE CAN BE A REAL PROBLEM IF I LOSE POWER STEERING AND WRECK DUE TO THE ENGINE SHUTTING OFF! HOW IS THIS NOT A RECALL FOR 2002 AND YET A RECALL FOR 2001? I HAVE YET TO SEE A SES LIGHT GO ON FOR THIS ISSUE. I'VE GOT JUST OVER 100,000 MILES ON THIS TRUCK. PLEASE TELL ME THAT THIS WILL BE A RECALL OR AT LEAST THIS IS THE ISSUE SURROUNDING MY PROBLEMS! *TR
NHTSA ODI #10292130
98,696 miles · Jun 16, 2009
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING 60 MPH, THE VEHICLE STALLED AND SHUT OFF COMPLETELY. THERE WAS NO POWER STEERING AND THE BRAKES WERE STIFF. THE VEHICLE RESTARTED AFTER A COUPLE OF MINUTES AND THE CONTACT DROVE TO HIS RESIDENCE. THE DEALER PERFORMED A DIAGNOSTIC AND STATED THAT THE CRANK …
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING 60 MPH, THE VEHICLE STALLED AND SHUT OFF COMPLETELY. THERE WAS NO POWER STEERING AND THE BRAKES WERE STIFF. THE VEHICLE RESTARTED AFTER A COUPLE OF MINUTES AND THE CONTACT DROVE TO HIS RESIDENCE. THE DEALER PERFORMED A DIAGNOSTIC AND STATED THAT THE CRANK SENSOR WAS FAULTY AND RENDERED FAILURE CODE NUMBER P0335. THE CONTACT PAID FOR THE REPAIR. THE FAILURE MILEAGE WAS 98,696.
NHTSA ODI #10274027
201,000 miles · Apr 15, 2009
Engine And Engine Cooling
I HAVE THE 2002 SILVERADO 2500HD WITH THE 8.1L ENGINE AND I HAVE RANDOM STALLING WHILE DRIVING AT ANY SPEED OR EVEN STANDING AT A STOP LIGHT. IT HAS JUST STARTED TO NOT START FROM A COLD START TOO. I BROUGHT IT TO THE DEALERSHIP AND WAS TOLD IT WAS GIVING THE CRANKSHAFT POSITION SENSOR CODE AS DEFECTIVE. THERE IS ALREADY A RE…
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I HAVE THE 2002 SILVERADO 2500HD WITH THE 8.1L ENGINE AND I HAVE RANDOM STALLING WHILE DRIVING AT ANY SPEED OR EVEN STANDING AT A STOP LIGHT. IT HAS JUST STARTED TO NOT START FROM A COLD START TOO. I BROUGHT IT TO THE DEALERSHIP AND WAS TOLD IT WAS GIVING THE CRANKSHAFT POSITION SENSOR CODE AS DEFECTIVE. THERE IS ALREADY A RECALL ON SPECIFIC 8.1L FOR THE 2001 SILVERADO WITH THE EXACT SAME SYMPTOMS. *TR
NHTSA ODI #10265542
95,000 miles · Dec 23, 2008
Engine And Engine Cooling
I HAVE A 2002 CHEVY SILVERADO 2500 HD 4X5 8.1, I HAVE REPLACED THE CRANKSHAFT POSITION SENSOR A YEAR AGO AND NOW I AM GETTING THE ERROR CODE AGAIN STATING ITS IS BAD AGAIN. THIS IS NOT A CHEAP PART AND VERY DIFFICULT TO CHANGE, WHAT IS THE PROBLEM. *TR
NHTSA ODI #10252612
93,450 miles · Dec 18, 2008
Engine And Engine CoolingEquipment
BROKEN EXHAUST BOLTS ON MY 2002 CHEVY 2500 HD TRUCK, I WENT TO THE LOCAL GARAGE AND THEY TOLD ME THEY HAD WORKED ON 6 OTHER TRUCKS WITH THE SAME PROBLEM. THERE WAS A GM SALES MEN THERE AND SAID THEY HAVE BEEN HAVING ALOT OF TROUBLE WITH THE BOLTS BREAKING ON THE 6.0 MOTORS. *TR
NHTSA ODI #10252231
52,000 miles · Oct 20, 2008
Engine And Engine Cooling
CHEVROLET 2500HD W/ 8.1 LITER ENGINE, STALLS AND HESITATES. THE ENGINE WILL USUALLY RESTART BUT WILL STALL AGAIN. I STALLED IN AN INTERSECTION AND WAS NEARLY STRUCK BY A FORD MUSTANG. DEALERSHIP DIAGNOSIS - CRANKSHAFT POSITION SENSOR. *TR
NHTSA ODI #10246079
55,000 miles · Sep 4, 2008
Engine And Engine Cooling
I HAVE A 2002 CHEVY SILVERADO 2500HD WITH A 8.1. TWO MONTHS AGO THE TRUCK JUST STALLED WHILE I WAS DRIVING IT AND THEN IMMEDIATELY RE-STARTED. SINCE THEN THERE HAVE BEEN SEVERAL OCCASIONS WHERE THE TRUCK SIMPLY SHUTS OFF WHILE I AM DRIVING. IT HAS BECOME PROGRESSIVELY DIFFICULT TO RESTART THE ENGINE. I STALLED OUT IN THE MID…
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I HAVE A 2002 CHEVY SILVERADO 2500HD WITH A 8.1. TWO MONTHS AGO THE TRUCK JUST STALLED WHILE I WAS DRIVING IT AND THEN IMMEDIATELY RE-STARTED. SINCE THEN THERE HAVE BEEN SEVERAL OCCASIONS WHERE THE TRUCK SIMPLY SHUTS OFF WHILE I AM DRIVING. IT HAS BECOME PROGRESSIVELY DIFFICULT TO RESTART THE ENGINE. I STALLED OUT IN THE MIDDLE OF AN INTERSECTION THE OTHER DAY AND SAT THERE FOR 2-3 MINUTES TRYING TO START THE TRUCK. THERE SEEMS TO BE NO RHYME OR REASON TO WHEN OR WHY THIS HAPPENS. MY ENGINE LIGHT HAS NEVER BEEN TRIPPED BY THIS PROBLEM. AFTER READING THE TROUBLE CODES AND CONSULTING WITH SEVERAL MECHANICS WE DETERMINED THE PROBLEM TO BE THE CRANK SHAFT POSITION SENSOR. AS I READ THROUGH COMPLAINTS ON THIS WEBSITE I NOTICE THIS IS A FAIRLY COMMON PROBLEM. IT IS ALSO VERY DANGEROUS. WITH THE AMOUNT OF COMPLAINTS AND THE LEVEL OF DANGER ASSOCIATED WITH THIS I WOULD HOPE THIS WOULD BE RECALLED FOR THE SAFETY REASONS. *TR
NHTSA ODI #10240902
56,463 miles · Aug 18, 2008
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT THE CRANK POSITION SENSOR FAILED WHILE DRIVING LESS THAN 55 MPH. THE VEHICLE COMPLETELY LOST POWER AND SHUT OFF. AFTER A FEW MINUTES, THE VEHICLE RESTARTED. THE DEALER REPLACED THE BATTERY CABLE AND STATED THAT THE FAILURE WAS REMEDIED. THE FOLL…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT THE CRANK POSITION SENSOR FAILED WHILE DRIVING LESS THAN 55 MPH. THE VEHICLE COMPLETELY LOST POWER AND SHUT OFF. AFTER A FEW MINUTES, THE VEHICLE RESTARTED. THE DEALER REPLACED THE BATTERY CABLE AND STATED THAT THE FAILURE WAS REMEDIED. THE FOLLOWING DAY, WHILE DRIVING 10 MPH, THE FAILURE RECURRED. THE DEALER PERFORMED A DIAGNOSTIC AND TOOK THE VEHICLE FOR A TEST DRIVE. THE VEHICLE FAILED AGAIN AND THE DEALER STATED THAT THE CRANKSHAFT SENSOR WAS DEFECTIVE. THEY REPLACED THE CRANKSHAFT POSITION SENSOR. THE FAILURE MILEAGE WAS 56,463 AND CURRENT MILEAGE WAS 64,000. UPDATED 10/16/08 *BF THE CONSUMER STATED THE 2002 MODELS WERE RECALLED FOR THIS PROBLEM. UPDATED 10/21/08. *JB
NHTSA ODI #10238723
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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