NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
43 reportsClear category filter110,000 miles · Feb 22, 2012
Engine And Engine Cooling
TWO EXHAUST MANIFOLD BOLTS ON A 2002 CHEVY SILVERADO 2500 HD ROTTED AND SHEERED OFF AND ONE OTHER DOES NOT SEEM TO BE AS RUSTED AND JUST BROKE OFF AT THE HEAD OF THE BOLT. THIS BOLT FAILURE COULD CAUSE MANY ISSUES, ONE BEING, POSSIBLE FIRE IN THE ENGINE COMPARTMENT, OR CATALYTIC FAILURE, O2 SENSOR ISSUES, CHECK ENGINE LIGHT STAY…
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TWO EXHAUST MANIFOLD BOLTS ON A 2002 CHEVY SILVERADO 2500 HD ROTTED AND SHEERED OFF AND ONE OTHER DOES NOT SEEM TO BE AS RUSTED AND JUST BROKE OFF AT THE HEAD OF THE BOLT. THIS BOLT FAILURE COULD CAUSE MANY ISSUES, ONE BEING, POSSIBLE FIRE IN THE ENGINE COMPARTMENT, OR CATALYTIC FAILURE, O2 SENSOR ISSUES, CHECK ENGINE LIGHT STAYING ON. *TR
NHTSA ODI #10448973
91,000 miles · Dec 31, 2011
Engine And Engine Cooling
AS MILLIONS OF OTHER COMPLAINTS FOR THIS SAME PROBLEM MY 2002 CHEVY 6.0LTR EXHAUST MANIFOLD BOLT HEADS ARE SNAPPING OFF AND BURNED THE GASKET OUT WHICH NOW FIRE SHOOTS OUT THE GAP AND THE EXHAUST IS NOW FILLING UP IN THE ENGINE COMPARTMENT AND TRAVELING INTO THE CAB. ALSO NOT TO MENTION THE EMISSIONS THAT ARE NOT BEING DISPLACED…
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AS MILLIONS OF OTHER COMPLAINTS FOR THIS SAME PROBLEM MY 2002 CHEVY 6.0LTR EXHAUST MANIFOLD BOLT HEADS ARE SNAPPING OFF AND BURNED THE GASKET OUT WHICH NOW FIRE SHOOTS OUT THE GAP AND THE EXHAUST IS NOW FILLING UP IN THE ENGINE COMPARTMENT AND TRAVELING INTO THE CAB. ALSO NOT TO MENTION THE EMISSIONS THAT ARE NOT BEING DISPLACED PROPERLY AND THAT IT IS RUINING MY CATALYTIC CONVERTER. NOT ONLY DOES THIS POSE A HUGE FIRE RISK THE FLAME THAT SHOOTS OUT IS DIRECTED RIGHT AT THE ENGINE COOLANT SENSOR AND IS BURNING IT, SOMEONE SOMEWHERE HAS SWEPT THIS PROBLEM UNDER THE RUG IT'S TIME TO ADDRESS THIS BEFORE SOMEONE GETS HURT. DO IT NOW !!!!!!!! DEMAND A RECALL!!!!!!! DO IT NOW!!!!!!! *KB
NHTSA ODI #10441960
71,000 miles · Dec 8, 2011
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT WAS DRIVING APPROXIMATELY 55 MPH WHEN THE ENGINE STALLED WITH THE ILLUMINATION OF THE SRS WARNING INDICATOR. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE ENGINE WAS PERFORMING ROUGHLY. THE ENGINE WAS RESTARTED AFTER COOLING DOWN. THE FAILURE RECURRED THR…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT WAS DRIVING APPROXIMATELY 55 MPH WHEN THE ENGINE STALLED WITH THE ILLUMINATION OF THE SRS WARNING INDICATOR. PRIOR TO THE FAILURE, THE CONTACT NOTICED THAT THE ENGINE WAS PERFORMING ROUGHLY. THE ENGINE WAS RESTARTED AFTER COOLING DOWN. THE FAILURE RECURRED THREE TIMES. THE CONTACT REFERENCED NHTSA CAMPAIGN ID NUMBER 07V52100 (ENGINE AND ENGINE COOLING) BUT WAS ADVISED THAT THE VIN WAS NOT INCLUDED IN THE RECALL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE CAM SHAFT POSITION SENSOR WAS BEING REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 71,000.
NHTSA ODI #10439057
67,000 miles · Oct 27, 2011
Engine And Engine CoolingSteering
WHILE DRIVING DOWN THE ROAD THE VEHICLE DIES OUT, AND QUITS RUNNING. IT THEN BECOMES HARD TO STEER AND STOP. IT TAKES ABOUT 2 TO 5 MINUTES BEFORE STARTING BACK UP, SOMETIMES MAYBE EVEN LONGER. IT DIES OUT ANY WHERE FROM 2 TO 3 TIMES A DAY, DEPENDING ON HOW LONG AND FAR I AM DRIVING. THE SPEED VARIES FROM 10 MPH UP TO 75 MPH…
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WHILE DRIVING DOWN THE ROAD THE VEHICLE DIES OUT, AND QUITS RUNNING. IT THEN BECOMES HARD TO STEER AND STOP. IT TAKES ABOUT 2 TO 5 MINUTES BEFORE STARTING BACK UP, SOMETIMES MAYBE EVEN LONGER. IT DIES OUT ANY WHERE FROM 2 TO 3 TIMES A DAY, DEPENDING ON HOW LONG AND FAR I AM DRIVING. THE SPEED VARIES FROM 10 MPH UP TO 75 MPH. *TT
NHTSA ODI #10432969
32,000 miles · Jun 10, 2011
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.THIS HAPPENS 4 TO 5 TIMES A DAY. *TR
NHTSA ODI #10405908
114,000 miles · May 18, 2011
Engine And Engine CoolingFuel System, Diesel
I HAVE A 2002 CHEVROLET SILVERADO 2500HD LT EXT. CAB LB7 DURAMAX 5 SPEED ALLISON TRANSMISSION, IT HAS 114000 MILES ON IT. THIS TRUCK HAS BEEN SERVICED AS DIRECTED SINCE NEW. THE TRUCK STARTED USING LOTS OF FUEL, AT AN IDLE IT SERGED BETWEEN 700 & 900 RPM'S, AND OIL STARTED BLOWING OUT THE BLOWBY TUBE. I HAVE JUST FOUND OUT THAT…
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I HAVE A 2002 CHEVROLET SILVERADO 2500HD LT EXT. CAB LB7 DURAMAX 5 SPEED ALLISON TRANSMISSION, IT HAS 114000 MILES ON IT. THIS TRUCK HAS BEEN SERVICED AS DIRECTED SINCE NEW. THE TRUCK STARTED USING LOTS OF FUEL, AT AN IDLE IT SERGED BETWEEN 700 & 900 RPM'S, AND OIL STARTED BLOWING OUT THE BLOWBY TUBE. I HAVE JUST FOUND OUT THAT 3 FUEL INJECTORS ARE LEAKING FUEL, WITH A POSSIBLE HEAD GASKET LEAK,FILLING MY CRANKCASE WITH DIESEL, CAUSING OIL TO BLOW OUT ALL OVER THE TRUCK, ROAD AND WHATEVER ELSE IT CAN LAND ON. WHILE INVESTIGATING WHAT TO DO, TO FIX THE TRUCK I'VE FOUND 3 OTHER PEOPLE I KNOW THAT HAVE DURAMAX'S, AND THEY ARE GOING THROUGH THE SAME PROBLEMS. IT'S GOING TO TAKE ME A YEAR TO SAVE THE MONEY I NEED TO FIX THIS TRUCK. I'M EVEN GOING TO DO THE WORK MYSELF. IN MY OPINION GM SHOULD BE ASHAMED. THEY SHOULD AT LEASED PAY FOR THE PARTS. THE CHEAPEST INJECTORS I'VE FOUND ARE $225.00 APIECE WITH A $125.00 CORE CHARGE. IT'S RECOMENDED THAT ALL 8 INJECTORS BE REPLACED AT ONCE. I'VE ALSO BEEN TOLD THESE ENGINES HAVE DEFECTIVE HEAD GASKETS. THAT WILL COST ANOTHER $600.00 FOR PARTS, AND $110.00 FOR SPECIAL TOOLS I NEED TO DO THE JOB. WHEN I FORKED OVER THE $40,000 CASH INHERITINCE MONEY TO BUY THIS TRUCK, I DIDN'T SIGNUP FOR THIS. *TR
NHTSA ODI #10401382
101,112 miles · May 17, 2011
Engine And Engine Cooling
I OWN A 2002 CHEVROLET 2500 HD WITH THE 8.1 (8100 VORTEC) ENGINE. I HAD BEGAN HAVING PROBLEMS WITH THE ENGINE STALLING WHILE DRIVING PERIODICALLY. IT BECAME A FREQUENT PROBLEM. I HAD THE VEHICLE SCANNED AT A LOCAL AUTO PARTS STORE WITH NO FAULT CODES SHOWING. I LEARNED THE CRANKSHAFT POSITION SENSOR WAS AT FAULT BY DOING SOME ON…
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I OWN A 2002 CHEVROLET 2500 HD WITH THE 8.1 (8100 VORTEC) ENGINE. I HAD BEGAN HAVING PROBLEMS WITH THE ENGINE STALLING WHILE DRIVING PERIODICALLY. IT BECAME A FREQUENT PROBLEM. I HAD THE VEHICLE SCANNED AT A LOCAL AUTO PARTS STORE WITH NO FAULT CODES SHOWING. I LEARNED THE CRANKSHAFT POSITION SENSOR WAS AT FAULT BY DOING SOME ONLINE RESEARCH. I ALSO LEARNED THE SAME ENGINE HAD A RECALL IN 2001 AND NOT 2002 THE FACT THE VEHICLE STALLS DURING OPERATION IS A SERIOUS HAZARD . CHEVROLET NEEDS TO TAKE RESPONSIBILITY FOR THIS AND RECALL THESE VEHICLES . I CHANGED MY OWN , BUT CHEVROLET NEEDS TO FIX THIS FAST BEFORE SOMEONE DIES IF THEY HAVEN'T ALREADY ! *TR
NHTSA ODI #10401275
55,000 miles · May 5, 2011
Engine And Engine Cooling
2002 2500HD CHEVY SILVERADO STALLING FOR THE LAST 6 MONTHS RANDOMLY. TAKEN TO HAVE FIXED CANNOT IDENTIFY THE PROBLEM WITH COMPUTER SCAN. TRUCK STALLING ON THE HIGHWAY MANY TIMES. ONCE TRUCK STALLS, TURN OFF KEY, LET SET FOR 10 -15 SECONDS, RESTART. I GUESS THE SYSTEM RESETS ITSELF. THIS IS NOT SAFE. *TR
NHTSA ODI #10399200
70,887 miles · Mar 27, 2011
Engine And Engine Cooling
2002 2500HD SILVERADO WITH 8.1L GAS MOTOR STALLING RANDOMLY FOR TWO MONTHS NOW, AT LEAST 3 TIMES A WEEK. TOOK IT INTO THE DEALER AND CRANKSHAFT POSITION SENSOR WAS AT FAULT, WHICH THE DEALER TOLD ME THE 2001 8.1L HAS OPEN RECALL BUT NOT ON 2002!! LAST TIME I DROVE THE TRUCK I WAS NEARLY T-BONED DUE TO THE TRUCK DYING IN INTERS…
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2002 2500HD SILVERADO WITH 8.1L GAS MOTOR STALLING RANDOMLY FOR TWO MONTHS NOW, AT LEAST 3 TIMES A WEEK. TOOK IT INTO THE DEALER AND CRANKSHAFT POSITION SENSOR WAS AT FAULT, WHICH THE DEALER TOLD ME THE 2001 8.1L HAS OPEN RECALL BUT NOT ON 2002!! LAST TIME I DROVE THE TRUCK I WAS NEARLY T-BONED DUE TO THE TRUCK DYING IN INTERSECTION. PLEASE EVERYONE WHO HAS HAD THIS PROBLEM REPORT IT HERE! WE NEED A RECALL ON THIS CPS BEFORE SOMEONE DIES! I HAD DEALERSHIP FIX IT TO THE TUNE OF $400!!!!! CHEVY NEEDS TO OWN THIS PROBLEM! *TR
NHTSA ODI #10392985
70,000 miles · Mar 3, 2011
Engine And Engine Cooling
EXHAUST MANIFOLD BOLTS ON 2002 CHEVROLET 2500 HD 6.0 L V8 ARE BROKEN AT THE BACK BOLT ON THE DRIVERS SIDE. THE PASSANGER SIDE EXHAUST MANIFOLD IS CRACKED BETWEEN THE 3RD AND 4TH BOLT FROM THE FRONT. I REPLACED THE BOLTS ON THE DRIVER SIDE, EXCEPT FOR THE BACK ONE THAT IS SHEARED OFF FLUSH WITH THE CYLINDER HEAD. THE ONLY WAY TO …
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EXHAUST MANIFOLD BOLTS ON 2002 CHEVROLET 2500 HD 6.0 L V8 ARE BROKEN AT THE BACK BOLT ON THE DRIVERS SIDE. THE PASSANGER SIDE EXHAUST MANIFOLD IS CRACKED BETWEEN THE 3RD AND 4TH BOLT FROM THE FRONT. I REPLACED THE BOLTS ON THE DRIVER SIDE, EXCEPT FOR THE BACK ONE THAT IS SHEARED OFF FLUSH WITH THE CYLINDER HEAD. THE ONLY WAY TO GET THIS PARTICULAR BOLT OUT IS TO REMOVE THE CYLINDER HEAD FROM THE ENGINE SO THAT A MACHINE SHOP CAN DRILL OUT THE OFFENDING BOLT. THE REPLACEMENT BOLTS THAT I PURCHASED FROM THE GM DEALER WERE A MUCH STURDIER BOLT THAT HAD A MUCH LARGER HEAD ON THE BOLT. TO ME THIS INDICATES KNOWLEDGE THAT THERE IS A PROBLEM AND THAT GM IS AWARE OF IT. THIS WILL MOST CERTAINLY LEAD TO AN EXHAUST LEAK THAT WILL CAUSE THE CHECK ENGINE LIGHT TO COME ON. A VEHICLE WITH THE CHECK ENGINE LIGHT ON CANNOT PASS A FIELD EMISSIONS TEST AND WILL RESULT IN A REVOCATION OF THE VEHICLES REGISTRATION UNTIL THE PROBLEM IS CORRECTED. THIS IS NOW A SERIOUS PROBLEM THAT IS VERY EXPENSIVE TO REPAIR. GM SHOULD BE HELD ACCOUNTABLE FOR THE POSSIBLE EPA VIOLATIONS THAT THIS WELL DOCUMENTED ISSUE IS NOW CAUSING. THIS VEHICLE ONLY HAS 70,000 MILES ON IT, VERY LOW FOR A 2002.
NHTSA ODI #10386262
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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