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2002 Chevrolet Silverado 2500

Owner reports · Recalls · Investigations

More warning signs than most Silverado 2500 years

Owner complaints for the 2002 Chevrolet Silverado 2500 are substantially higher than the model-year median of 81.

About this comparison →

When problems were reported

Mileage at the reported incident

307 reports with mileage · 44 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes, Hydraulic. Review the 117 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 88 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 43 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

21 crash reports6 fire reports7 injury reports

Engine complaints

13 reports
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143,000 miles · Feb 11, 2021
Engine

KNOWN TO GM INJECTOR PROBLEMS WITH CHEVY SILVERADO VEHICLES. MY INJECTOR CRACKED OR FAILED AND DIESEL WENT IN TO MY ENGINE OIL, CAUSING AN OVER FILL OF 2 GALLONS. OIL WAS LEAKING OUT ALL OVER FROM MY TRUCK WHILE I WAS DRIVING. THERE ARE MANY OTHER POST ABOUT THIS PROBLEM AND GM IS AWARE BUT HASN'T ISSUED A RECALL.

NHTSA ODI #11395766

48,500 miles · Jul 18, 2018
Engine

WHILE DRIVING, THE ENGINE WILL SUDDENLY SHUT DOWN AND WITHOUT WARNING STOP.

NHTSA ODI #11112067

Mileage unknown · Feb 14, 2018
Engine

2002 CHEVROLET SILVERADO. CONSUMER WRITES IN REGARDS TO ENGINE FUEL INJECTORS SAFETY RECALL. *LD THE CONSUMER STATED THE VEHICLE REQUIRED HAVING THE FUEL INJECTORS REPLACED MULTIPLE TIMES. THE VEHICLE WAS REPAIRED TWICE UNDER WARRANTY. THE CONSUMER REQUESTED FOR THE MANUFACTURER CONTINUE TO REPAIR THE INJECTORS UNDER THE WARR…

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2002 CHEVROLET SILVERADO. CONSUMER WRITES IN REGARDS TO ENGINE FUEL INJECTORS SAFETY RECALL. *LD THE CONSUMER STATED THE VEHICLE REQUIRED HAVING THE FUEL INJECTORS REPLACED MULTIPLE TIMES. THE VEHICLE WAS REPAIRED TWICE UNDER WARRANTY. THE CONSUMER REQUESTED FOR THE MANUFACTURER CONTINUE TO REPAIR THE INJECTORS UNDER THE WARRANTY. *JS

NHTSA ODI #11061708

50,000 miles · Aug 30, 2017
Engine

EXHAUST MANIFOLD BOLTS BREAKING AND BOTH EXHAUST MANIFOLDS CRACKING EVRY 50000 MILES. OCCURS WHILE DRIVING.

NHTSA ODI #11020557

157,000 miles · Apr 17, 2016
Engine

THE GLOW PLUGS AND FUEL INJECTORS FAIL PREMATURELY I WAS TOLD BY THE LOCOL SERVACE MANAGER THAT THERE WAS PLENTY OF TIME TO GET THE REPAIRS BUT A FEW WEEKS LATER WHEN I BROUGHT IT IN FOR THE SUPPOSED FREE REPAIRS THEY TELL ME THE TIME FOR MINE IS OVER ITS TOO OLD. WHEN NO ONE HAD SHOWED ME A PRINT OUT AND THE COMPANY I BOUT IT…

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THE GLOW PLUGS AND FUEL INJECTORS FAIL PREMATURELY I WAS TOLD BY THE LOCOL SERVACE MANAGER THAT THERE WAS PLENTY OF TIME TO GET THE REPAIRS BUT A FEW WEEKS LATER WHEN I BROUGHT IT IN FOR THE SUPPOSED FREE REPAIRS THEY TELL ME THE TIME FOR MINE IS OVER ITS TOO OLD. WHEN NO ONE HAD SHOWED ME A PRINT OUT AND THE COMPANY I BOUT IT FROM NEVER DISCLOSED THE ISSUE. IF THE VEHICLE STALLS IN TRAFFIC IT COULD CAUSE AN ACCIDENT.

NHTSA ODI #10859920

247,433 miles · May 14, 2015
EngineLatches/locks/linkagesSeat BeltsFire

TL* THE CONTACT OWNED A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 75 MPH, A MESSAGE INDICATING THAT THE ENGINE OVERHEATED DISPLAYED AND SMOKE APPEARED UNDER THE HOOD OF THE VEHICLE. THE FLAMES QUICKLY SPREAD TO THE CABIN OF THE VEHICLE. WHILE THE FLAMES WERE INSIDE THE CABIN, THE CONTACT ATTEMPTED TO EXIT THE…

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TL* THE CONTACT OWNED A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 75 MPH, A MESSAGE INDICATING THAT THE ENGINE OVERHEATED DISPLAYED AND SMOKE APPEARED UNDER THE HOOD OF THE VEHICLE. THE FLAMES QUICKLY SPREAD TO THE CABIN OF THE VEHICLE. WHILE THE FLAMES WERE INSIDE THE CABIN, THE CONTACT ATTEMPTED TO EXIT THE VEHICLE BUT THE DRIVER SIDE SEAT BELT WOULD NOT IMMEDIATELY UNLOCK. THE SEAT BELT FINALLY UNLOCKED, BUT THE DRIVER SIDE DOOR WOULD NOT UNLOCK. THE DOOR EVENTUALLY UNLOCKED AND THE CONTACT WAS ABLE TO EXIT THE VEHICLE. THE FIRE DEPARTMENT WAS CALLED TO THE SCENE TO EXTINGUISH THE FLAMES. THE VEHICLE WAS DESTROYED. THERE WERE NO INJURIES. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 247,433.

NHTSA ODI #10716521

243,244 miles · May 14, 2015
EngineFuel/propulsion SystemSeat BeltsFire

AS I WAS DRIVING AT 75 MPH, THE INDICATOR LIGHT SAID, ENGINE OVERHEATED. I THEN NOTICED WHITE SMOKE COMING FROM THE HOOD. THE WHITE SMOKE TURNED BLACK. I PULLED OVER TO THE SIDE OF THE ROAD AND BEFORE I COULD SHUT THE ENGINE OFF, THE ENGINE SHUT OFF ON ITS OWN. FIRE BEGAN COMING UP WHERE THE WINDSHIELD WIPERS ARE LOCATED AND PRO…

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AS I WAS DRIVING AT 75 MPH, THE INDICATOR LIGHT SAID, ENGINE OVERHEATED. I THEN NOTICED WHITE SMOKE COMING FROM THE HOOD. THE WHITE SMOKE TURNED BLACK. I PULLED OVER TO THE SIDE OF THE ROAD AND BEFORE I COULD SHUT THE ENGINE OFF, THE ENGINE SHUT OFF ON ITS OWN. FIRE BEGAN COMING UP WHERE THE WINDSHIELD WIPERS ARE LOCATED AND PROCEEDED THROUGH THE DASHBOARD. I TRIED TO UNLATCH MY SEAT BELT BUT IT WOULD NOT RELEASE. AFTER SEVERAL TRIES IT RELEASED. I ATTEMPTED TO OPEN THE DOOR; HOWEVER, I HAD THE SAME PROBLEM. THE DOOR DID NOT OPEN. AFTER BUMPING THE DOOR FORCIBLY MANY TIMES, IT ALSO CAME OPEN. MIND YOU, ALL THE WHILE THE FLAMES ARE COMING INSIDE THE CAB. I CALLED 911 AND THE COUNTY FIRE DEPARTMENT WAS DISPATCHED, BUT NOT BEFORE IT WAS FULLY ENGULFED IN FLAMES. THE VEHICLE WAS WELL MAINTAINED. I WANT TO KNOW WHAT STEPS TO TAKE TO PREVENT THIS FROM EVER HAPPENING AGAIN?

NHTSA ODI #10716507

82,000 miles · Jan 16, 2015
Engine

TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. WHILE DRIVING AT 65 MPH, THE ENGINE STALLED AND THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE RESTARTED AFTER NUMEROUS ATTEMPTS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 82,000.

NHTSA ODI #10673033

143,000 miles · Nov 5, 2014
Engine

TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT THE HEAD GASKET FAILED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSIS WHERE THE TECHNICIAN STATED THAT THE HEAD GASKET NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILU…

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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT THE HEAD GASKET FAILED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSIS WHERE THE TECHNICIAN STATED THAT THE HEAD GASKET NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 143,000.

NHTSA ODI #10652710

145,000 miles · Oct 14, 2014
Engine

TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT THE VEHICLE FAILED TO START. THE CONTACT HAD TO SPRAY ETHER ON THE INTAKE IN ORDER TO START THE VEHICLE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAG…

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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT THE VEHICLE FAILED TO START. THE CONTACT HAD TO SPRAY ETHER ON THE INTAKE IN ORDER TO START THE VEHICLE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 145,000.

NHTSA ODI #10644448

Official recalls

1

01V220000 · Interior Lighting

Jun 26, 2001

VEHICLE DESCRIPTION: CERTAIN PICKUP TRUCKS EQUIPPED WITH 6.6L DIESEL ENGINES FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 105, "HYDRAULIC AND ELECTRIC BRAKE SYSTEMS." THESE VEHICLES HAVE A BRAKE SYSTEM WARNING LIGHT IN THE INSTRUMENT CLUSTER THAT MAY NOT ILLUMINATE WHEN THE BRAKE FLUID IS LOW. IN ADDITION, WHEN THE BRAKE FLUID IS LOW, THE VEHICLE MAY NOT MEET THE PARTIAL SYSTEM REQUIREMENTS OF FMVSS NO. 105.

Consequence & remedy

Consequence: THESE CONDITIONS COULD RESULT IN REDUCED BRAKING CAPABILITY, WHICH COULD LEAD TO A CRASH.

Remedy: DEALERS WILL CHANGE THE LOCATION OF A WIRE CONNECTION IN THE UNDERHOOD BUSSED ELECTRICAL CENTER. OWNER NOTIFICATION BEGAN JULY 9, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

4

EA07013 · 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.