NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
43 reportsClear category filter37,000 miles · Jun 11, 2008
Engine And Engine Cooling
WE OWN A 2002 CHEVROLET SILVERADO LS 2500 HD WITH ALLISON TRANS. & VORTEC 8100 8.1 LITER V8 ENGINE. THE CHECK-ENGINE LIGHT WAS COMING ON, THE ENGINE RAN ROUGH, AND SOMETIMES STALLED COMPLETELY, USUALLY AFTER STARTING UP FROM A STOP. OUR DEALER REPLACED THE CRANK SENSOR AND WE HAVE HAD NO PROBLEMS SINCE. HOWEVER, WE RECENTLY H…
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WE OWN A 2002 CHEVROLET SILVERADO LS 2500 HD WITH ALLISON TRANS. & VORTEC 8100 8.1 LITER V8 ENGINE. THE CHECK-ENGINE LIGHT WAS COMING ON, THE ENGINE RAN ROUGH, AND SOMETIMES STALLED COMPLETELY, USUALLY AFTER STARTING UP FROM A STOP. OUR DEALER REPLACED THE CRANK SENSOR AND WE HAVE HAD NO PROBLEMS SINCE. HOWEVER, WE RECENTLY HEARD (AND FOUND INFORMATION ON YOUR WEBSITE) THAT 29 OF 2001 CHEVY OR GMC MODELS HAD A RECALL FOR CRANK SENSORS (NHTSA #EA06016). IS AN INVESTIGATION UNDER WAY FOR THE 2002 MODELS? WHO DO WE NEED TO CONTACT? *TR
NHTSA ODI #10230729
110,000 miles · May 16, 2008
Engine And Engine Cooling
CRANKSHAFT POSITION SENSOR IS OPERATING INTERMITTENTLY CAUSING VEHICLE STALLING DURING NORMAL DRIVING. THIS FAILURE IS SO FAR RANDOM AND MAY OR MAY NOT OCCUR EACH TIME THE VEHICLE IS DRIVEN. NO SES LIGHT ACCOMPANIES THIS FAILURE. SO FAR ENGINE WILL RESTART AFTER 10-15 SECONDS WITH KEY OFF. THIS FAILURE SEEMS SIMILAR TO NHTSA…
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CRANKSHAFT POSITION SENSOR IS OPERATING INTERMITTENTLY CAUSING VEHICLE STALLING DURING NORMAL DRIVING. THIS FAILURE IS SO FAR RANDOM AND MAY OR MAY NOT OCCUR EACH TIME THE VEHICLE IS DRIVEN. NO SES LIGHT ACCOMPANIES THIS FAILURE. SO FAR ENGINE WILL RESTART AFTER 10-15 SECONDS WITH KEY OFF. THIS FAILURE SEEMS SIMILAR TO NHTSA CAMPAIGN # 07V521000 ADDRESSING THE SAME ISSUE ON THE PREVIOUS MODEL YEAR OF THIS VEHICLE. THIS FAILURE HAS BEEN ONGOING FOR THE PAST SEVERAL MONTHS AND SEEMS TO BE OCCURRING MORE FREQUENTLY LATELY. *TR
NHTSA ODI #10227980
999,999 miles · Apr 1, 2008
Engine And Engine Cooling
2002 CHEVROLET SILVERADO EQUIPPED WITH DURAMAX DIESEL ENGINE, FUEL INJECTOR BODIES CRACKED FILLING ENGINE CRANK CASE WITH DIESEL FUEL. I FOUND THE CONDITION BEFORE ANY DAMAGE COULD OCCUR. IF THIS CONDITION WAS NOT CAUGHT LIKE I DID, THE FUEL IN THE OIL WOULD OVER FLOW FROM THE ENGINE CRANK CASE AND SPRAY UNDER THE VEHICLE POTENT…
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2002 CHEVROLET SILVERADO EQUIPPED WITH DURAMAX DIESEL ENGINE, FUEL INJECTOR BODIES CRACKED FILLING ENGINE CRANK CASE WITH DIESEL FUEL. I FOUND THE CONDITION BEFORE ANY DAMAGE COULD OCCUR. IF THIS CONDITION WAS NOT CAUGHT LIKE I DID, THE FUEL IN THE OIL WOULD OVER FLOW FROM THE ENGINE CRANK CASE AND SPRAY UNDER THE VEHICLE POTENTIALLY CAUSING A FIRE. VEHICLE WAS TAKEN TO CHEVROLET DEALERSHIP WHERE THE FUEL INJECTORS ARE BEING REPLACED BY A SPECIAL CAMPAIGN. DEALER WAS RELUCTANT TO REPLACE FUEL INJECTORS DUE TO NOT MEETING ALL CONDITIONS MANDATED BY GM. GM HAS EXTENDED WARRANTY FOR THIS PROBLEM TO 7 YEARS OR 200K MILES, BUT HAS NOT DONE A RECALL. THESE FUEL INJECTORS HAVE AN EXTREMELY HIGH FAILURE RATE AND MANY LEAK FUEL INTO THE CRANK CASE WHICH COULD BE A POTENTIAL FIRE HAZARD. *TR
NHTSA ODI #10223083
68,000 miles · Apr 1, 2008
Engine And Engine Cooling
WHILE DRIVING UNDER NORMAL HIGHWAY CONDITIONS, THE ENGINE HAS STALLED THREE TIMES IN TWO WEEKS. THIS CAUSES A LOSS OF POWER STEERING AND POWER BRAKES. AT THIS POINT I HAVE BEEN ABLE TO SAFELY PULL OFF OF THE ROAD, AS IT HAS NOT OCCURRED DURING CONGESTED TRAFFIC. WHILE SEARCHING THE DATABASE I FOUND SIMILAR FAILURES OF 2001 8.1L…
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WHILE DRIVING UNDER NORMAL HIGHWAY CONDITIONS, THE ENGINE HAS STALLED THREE TIMES IN TWO WEEKS. THIS CAUSES A LOSS OF POWER STEERING AND POWER BRAKES. AT THIS POINT I HAVE BEEN ABLE TO SAFELY PULL OFF OF THE ROAD, AS IT HAS NOT OCCURRED DURING CONGESTED TRAFFIC. WHILE SEARCHING THE DATABASE I FOUND SIMILAR FAILURES OF 2001 8.1L ENGINES THAT WERE RECALLED TO REPLACE THE CRANKSHAFT POSITION SENSOR. *TR
NHTSA ODI #10223047
90,000 miles · Jan 13, 2008
Engine And Engine Cooling
VEHICLE STALLS SUDDNLY WHILE DRIVING. NO DEFINITE PATTERN TO THE STALLING. STALLS AT LEAST ONCE A DAY. HAS BEEN OCCURING FOR ABOUT THE LAST YEAR TO YEAR AND A HALF. WILL PULL OVER, WAIT ANYWHERE BETWEEN 5-20MIN AND THE VEHICLE WIL START AGAIN. *TR
NHTSA ODI #10214638
78,000 miles · Jan 7, 2008
Engine And Engine Cooling
JUST REGARDING GM RECALL NO. 06083 ALL 2001 SILVERADO @500/3500 HD MODELS WITH THE 8.1L GAS ENGINES: ALL THE CRANKSHAFT SENSORS ARE TO BE RECALLED IN THAT YEAR ONLY WHEN THE PROBLEM EXIST IN ALL 8.1L ENGINES UP TO 2006. I HAD A 900 DOLLAR BILL FROM A DEALERSHIP TO TRY AND FIX THIS PROBLEM AND THEN THE PROBLEM WASN'T EVEN SOLV…
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JUST REGARDING GM RECALL NO. 06083 ALL 2001 SILVERADO @500/3500 HD MODELS WITH THE 8.1L GAS ENGINES: ALL THE CRANKSHAFT SENSORS ARE TO BE RECALLED IN THAT YEAR ONLY WHEN THE PROBLEM EXIST IN ALL 8.1L ENGINES UP TO 2006. I HAD A 900 DOLLAR BILL FROM A DEALERSHIP TO TRY AND FIX THIS PROBLEM AND THEN THE PROBLEM WASN'T EVEN SOLVED. I BOUGHT THE PART MYSELF AND INSTALLED IT MYSELF. I FEEL THAT ALL YEARS SHOULD BE RECALLED. THIS IS A SERIOUS PROBLEM BECAUSE THE ENGINE WOULD FAIL WHILE DRIVING DOWN THE ROAD A HIGHWAY SPEEDS. THANKS *TR
NHTSA ODI #10214058
74,950 miles · Oct 10, 2006
Engine And Engine Cooling
2002 2500HD SILVERADO WITH 8.1 ENGINE. TWO TIMES IT CRANKED WITH NO START. TWO OTHER TIMES IT SHUT OFF AT HIGHWAY SPEEDS WITH NO WARNING OF ANY KIND. CHANGED THE FUEL PUMP AND FUEL FILTER. FINALLY CHANGED THE CRANK SENSOR. THE SENSOR FIXED THE PROBLEM. *JB
NHTSA ODI #10170441
30,889 miles · Sep 5, 2005
Electrical SystemEngine And Engine Cooling
2002 CHEVROLET 2500HD W/ 8.1L GASOLINE ENGINE: THE FAILURE OF THE CRANKSHAFT POSITION SENSOR ON THESE ENGINES APPEARS TO BE A VERY COMMON PROBLEM. THIS SENSOR FAILED ON MY TRUCK AT ONLY 30K MILES! I KNOW OF TWO OTHER '02 TRUCKS W/ THIS ENGINE THAT ALSO HAD THE SENSOR FAIL AND MANY OTHERS HAVE BEEN DISCOVERED WHILE DOING RESEARCH…
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2002 CHEVROLET 2500HD W/ 8.1L GASOLINE ENGINE: THE FAILURE OF THE CRANKSHAFT POSITION SENSOR ON THESE ENGINES APPEARS TO BE A VERY COMMON PROBLEM. THIS SENSOR FAILED ON MY TRUCK AT ONLY 30K MILES! I KNOW OF TWO OTHER '02 TRUCKS W/ THIS ENGINE THAT ALSO HAD THE SENSOR FAIL AND MANY OTHERS HAVE BEEN DISCOVERED WHILE DOING RESEARCH ON THIS PROBLEM! THE SERIOUSNESS OF THE PROBLEM LIES IN THE FACT THAT THE TRUCK SUDDENLY STOPS RUNNING FOR NO REASON AND YOU LOSE ALL POWER FOR THE BRAKES AND STEERING. AT TIMES IT WILL RESTART WITHOUT ANY PROBLEMS ONCE YOU SHIFT TO NEUTRAL, BUT OTHER TIMES IT MAY NOT RESTART FOR A DAY OR MORE. THIS WAS A HUGE SAFETY ISSUE FOR ME SINCE I TOW A 10K LBS. FIFTH-WHEEL WITH THE TRUCK! MY TRUCK STOPPED RUNNING FOUR TIMES OVER THE COURSE OF TWO WEEKS AS A RESULT OF THIS PROBLEM. EVERYTIME WAS WHILE TRAVELING IN TRAFFIC, WITH ONLY ONE OF THE TIMES WHILE BEING STOPPED AT A LIGHT! MY TRUCK IS NO LONGER UNDER WARRANTY DUE TO THE TIME LIMIT OF 36 MONTHS EXPIRING. TO HAVE SUCH A PART FAIL WITH ONLY 30K MILES ON THE ENGINE IS OUTRAGEOUS. ONE OF THE OTHER TRUCKS I KNOW OF HAD THE SENSOR FAIL AROUND 55K MILES. SAME PROBLEM, IT WOULD JUST STOP IN TRAFFIC OR WHEN PULLING OUT OF A LIGHT OR STOPPED TURN. AGAIN, A HUGE SAFETY ISSUE!!! THE COSTS TO ME TO REPAIR MY TRUCK FOLLOW: AC DELCO REPLACEMENT CRANKSHAFT SENSOR - $69.26 TOW CHARGES TO TOW TO JOSEPH CHEVROLET, CINCINNATI, OH - $58.85 LABOR DUE TO THE ORIGINAL SENSOR BREAKING IN THE BLOCK! - $336.54 TOTAL COST TO REPLACE THE SENSOR AFTER ONLY 30K MILES! = $464.65 AGAIN, I HAVE TO REPEAT HOW LARGE A SAFETY ISSUE THIS IS ON THESE TRUCKS!!! THE ENGINE JUST STOPS FOR NO REASON AT ANY TIME, HIGHWAY, SLOW MOVING, STOPPED, ETC. IT MAY RESTART, BUT THEN AGAIN IT MAY NOT FOR MANY HOURS! THE TRUCKS WITH THESE ENGINES IN THEM ARE GENERALLY TOWING LARGE TRAILERS BEHIND THEM. THIS COMPOUNDS THE SAFETY ASPECT OF THE PROBLEM. *JB
NHTSA ODI #10135343
1 miles · May 4, 2005
Engine And Engine Cooling
8.1 LITER ENGINE NOISE. ALSO BELT NOISE, BELT HAS BEEN REPLACED 3-TIMES.
NHTSA ODI #10119730
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
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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