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2000 Chevrolet Silverado 2500

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2000 Chevrolet Silverado 2500 do not stand out strongly from the model-year median of 81.

About this comparison →

When problems were reported

Mileage at the reported incident

98 reports with mileage · 34 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 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 25 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Steering. Review the 15 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

9 crash reports4 fire reports3 injury reports

What owners actually said

132 reports
195,000 miles · Mar 18, 2010
Service Brakes, Hydraulic

I HAD COME HOME FROM BEING OUT ON THE ROAD ALL WEEK, SINCE I AM AN OTR TRUCK DRIVER. I STARTED MY TRUCK TO LET IT WARM UP AND WHEN I GOT IN TO LEAVE, I DEPRESSED THE BRAKE PEDAL TO SHIFT MY TRUCK INTO (R) AND MY BRAKE PEDAL WENT TO THE FLOOR. SINCE I DO MOST MY MAINT. ON MY VEHICLES I FIGURED THE (MASTER CYLINDER) WENT BAD. AFTE…

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I HAD COME HOME FROM BEING OUT ON THE ROAD ALL WEEK, SINCE I AM AN OTR TRUCK DRIVER. I STARTED MY TRUCK TO LET IT WARM UP AND WHEN I GOT IN TO LEAVE, I DEPRESSED THE BRAKE PEDAL TO SHIFT MY TRUCK INTO (R) AND MY BRAKE PEDAL WENT TO THE FLOOR. SINCE I DO MOST MY MAINT. ON MY VEHICLES I FIGURED THE (MASTER CYLINDER) WENT BAD. AFTER REPLACING I WAS NOTICING THAT THERE WAS A PUDDLE OF BRAKE FLUID ON THE FLOOR UNDER THE DRIVERS SIDE OF THE CAB. CRAWLED UNDER AND FOUND THAT ALL THE BRAKE LINES HAD RUSTED THROUGH AND BLOWN AT THE ABS BLOCK. THE LOCAL CHEVY DEALER DID MY REPAIRS AT THE GRAND SUM OF $850.21. *TR

NHTSA ODI #10320808

75,000 miles · Mar 4, 2010
Fuel System, GasolinePower TrainService Brakes, Hydraulic

I WAS PARKING MY TRUCK AND LOST MY BRAKES. FOUND THAT THE BRAKE LINES RUSTED OUT AND I HAD TO REPLACE THEM. ALSO I NOTICED THAT THE TRANSMISSION AND FUEL LINES ARE RUSTED BADLY. I REPAIRED THE FUEL LINE 6 MONTHS AGO BECAUSE IT RUSTED THREW. THERE SHOULD BE A RECALL TO REPLACE ALL LINES DO TO POOR QUALITY LINES WERE USED. *TR

NHTSA ODI #10316634

85,000 miles · Feb 5, 2010
Service Brakes, HydraulicCrash

2000 CHEVY PICKUP ANTI-LOCK BRAKE KICK IN AND HAD COMPLETE LOSS OF BRAKES AND TRUCK ACCELERATED INTO VEHICLE IN FRONT. *TR

NHTSA ODI #10306338

93,640 miles · Dec 10, 2009
Service Brakes, Hydraulic

LOST BRAKES,BRAKE LINES RUSTED AND LOST FLUID. *TR

NHTSA ODI #10295249

115,000 miles · Dec 8, 2009
Service Brakes, Hydraulic

ANTILOCK BRAKES IN FRONT ACTIVATING WHEN NOT SUPPOSED TO. CAMPAIGN ID: 00V055000. THIS WAS FIXED ONCE AND IS NOW RECURRING. DEALER WILL NOT FIX AGAIN. VERY DANGEROUS! *TR

NHTSA ODI #10294875

123,235 miles · Oct 14, 2009
Service Brakes, Hydraulic

PURCHASED A USED 200 CHEVROLET SILVERADO K2500 4WD. THE ANTI LOCK BRAKES ACTIVATE AT 7MPH WHILE STOPPING. IT OCCURS AT EVERY STOP. THE DEALER REPLACED THE SPEED SENSORS PER THE RECALL WHICH DID NOT SOLVE THE PROBLEM. THE DEALER TESTED THE VEHICLE AFTER THE FIX AND FOUND IT STILL FAILING. NOW GM WON'T DO ANYTHING MORE AND MY TRUC…

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PURCHASED A USED 200 CHEVROLET SILVERADO K2500 4WD. THE ANTI LOCK BRAKES ACTIVATE AT 7MPH WHILE STOPPING. IT OCCURS AT EVERY STOP. THE DEALER REPLACED THE SPEED SENSORS PER THE RECALL WHICH DID NOT SOLVE THE PROBLEM. THE DEALER TESTED THE VEHICLE AFTER THE FIX AND FOUND IT STILL FAILING. NOW GM WON'T DO ANYTHING MORE AND MY TRUCK STILL HAS FAULTY ANTI LOCK BRAKES. *TR

NHTSA ODI #10287315

138,000 miles · Jul 21, 2009
Electrical SystemFuel System, Gasoline

TRUCK HAD HARD TIME STARTING WHEN COLD FOR 2 WEEKS PRIOR TO TRUCK NOT STARTING AT ALL. TOOK TRUCK IN WAS TOLD FUEL PUMP SHORTED , MELTED WIRE HARNESS AND FUEL PUMP MODULE MELTED. HALF OF ENGINE COMPARTMENT WIRE HARNESS MELTED ALSO. WAS TOLD BY MECHANIC WE WERE VERY LUCKY THAT THE TRUCK DID NOT EXPLODE. THIS IS TO COST $1800.00 I…

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TRUCK HAD HARD TIME STARTING WHEN COLD FOR 2 WEEKS PRIOR TO TRUCK NOT STARTING AT ALL. TOOK TRUCK IN WAS TOLD FUEL PUMP SHORTED , MELTED WIRE HARNESS AND FUEL PUMP MODULE MELTED. HALF OF ENGINE COMPARTMENT WIRE HARNESS MELTED ALSO. WAS TOLD BY MECHANIC WE WERE VERY LUCKY THAT THE TRUCK DID NOT EXPLODE. THIS IS TO COST $1800.00 IN REPAIRS. *TR

NHTSA ODI #10277663

77,009 miles · Mar 19, 2009
Service Brakes, Hydraulic

DRIVING SILVERADO, DEPRESSED BRAKE AND BRAKES FAILED. I WAS TRAVELING SLOWLY SO LUCKILY THERE I DIDN'T STRIKE ANYONE. I IMMEDIATELY STOPPED, AND NOTICED THAT THERE WAS FLUID DRIPPING FROM UNDER THE DRIVER SIDE PASSENGER COMPARTMENT. I TOOK THE SILVERADO IMMEDIATELY TO THE GM DEALER AND WAS TOLD MY BRAKE LINES WHERE RUSTED, A…

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DRIVING SILVERADO, DEPRESSED BRAKE AND BRAKES FAILED. I WAS TRAVELING SLOWLY SO LUCKILY THERE I DIDN'T STRIKE ANYONE. I IMMEDIATELY STOPPED, AND NOTICED THAT THERE WAS FLUID DRIPPING FROM UNDER THE DRIVER SIDE PASSENGER COMPARTMENT. I TOOK THE SILVERADO IMMEDIATELY TO THE GM DEALER AND WAS TOLD MY BRAKE LINES WHERE RUSTED, AND ONE WAS RUSTED THROUGH. I HAVE NEVER OWNED A VEHICLE THAT HAD RUSTED LINES. THIS IS A FAILURE DUE TO COST CUTTING MEASURES BY GM. USING A BARE STEEL TUBE THAT IS SUSCEPTIBLE TO RUSTING IS TOTAL IRRESPONSIBLE. SUCH AN IMPORTANT PART SHOULD NOT BE DESIGNED TO FAIL. *TR

NHTSA ODI #10262495

115,000 miles · Dec 18, 2008
Service Brakes, Hydraulic

WE ARE EXPERIENCING UNWANTED ABS ACTIVATION AT LOW SPEEDS GIVING US NO BRAKING WHEN ACTIVATED. THIS VEHICLE HAS BEEN SERVICED ON !0/28/05 FOR ABS RECALL #05068 AT 75,484 MILES THIS PROBLEM IS RE OCCURRING FOR THE LAST 18MONTHS. THE VEHICLE NOW HAS 115,000 MILES. I,VE NOTICED A NEW RECALL OUT #05V379000 FOR THIS ISSUE. THIS BRAKI…

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WE ARE EXPERIENCING UNWANTED ABS ACTIVATION AT LOW SPEEDS GIVING US NO BRAKING WHEN ACTIVATED. THIS VEHICLE HAS BEEN SERVICED ON !0/28/05 FOR ABS RECALL #05068 AT 75,484 MILES THIS PROBLEM IS RE OCCURRING FOR THE LAST 18MONTHS. THE VEHICLE NOW HAS 115,000 MILES. I,VE NOTICED A NEW RECALL OUT #05V379000 FOR THIS ISSUE. THIS BRAKING ISSUE WAS ONCE IN A WHILE NOW TO BE EVERY DAY AND ALMOST EVERY COMPLETE STOP. COULD THE MANUFACTURER BE REQUIRED TO FIX THIS ISSUE AGAIN AT NO COST TO US? IT DOES APPEAR TO US THAT GM FIXED THE ISSUE THE FIRST TIME BUT NOT THE PROBLEM,THAT CAUSED THE ISSUE.*TR

NHTSA ODI #10252201

67,000 miles · Oct 29, 2008
Service Brakes, Hydraulic

TOTAL BRAKE FAILURE, FORTUNATELY AT SLOW SPEED WHERE PARKING BRAKE COULD BE USED TO STOP. IT WAS IMMEDIATELY AFTER EXITING A HIGH-SPEED INTERSTATE, HOWEVER, WHERE THE FAILURE COULD WELL HAVE RESULTED IN A SERIOUS CRASH. THE VEHICLE, A 2000 CHEVROLET 3/4 TON SILVERADO HD TRUCK, WAS TAKEN TO A NEARBY CHEVROLET DEALER, WHERE IT W…

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TOTAL BRAKE FAILURE, FORTUNATELY AT SLOW SPEED WHERE PARKING BRAKE COULD BE USED TO STOP. IT WAS IMMEDIATELY AFTER EXITING A HIGH-SPEED INTERSTATE, HOWEVER, WHERE THE FAILURE COULD WELL HAVE RESULTED IN A SERIOUS CRASH. THE VEHICLE, A 2000 CHEVROLET 3/4 TON SILVERADO HD TRUCK, WAS TAKEN TO A NEARBY CHEVROLET DEALER, WHERE IT WAS DETERMINED THAT RUST HAD CAUSED TWO LEAKS IN THE BRAKE LINES, CAUSING IMMEDIATE FAILURE OF ALL FOUR WHEEL BRAKES. AN ESTIMATE OF UP TO $7000 FOR REPAIR WAS GIVEN. *TR

NHTSA ODI #10247190

Official recalls

1

00V222000 · Service Brakes, Hydraulic:power Assist:vacuum

Aug 8, 2000

VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES EQUIPPED WITH VACUUM POWER, 4-WHEEL DISC BRAKES. THESE VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 105, "HYDRAULIC BRAKE SYSTEMS." THESE VEHICLES WERE BUILT WITH A KINKED BRAKE BOOSTER VACUUM SUPPLY HOSE.

Consequence & remedy

Consequence: THESE VEHICLES DO NOT COMPLY WITH REQUIREMENTS OF FMVSS NO. 105.

Remedy: DEALERS WILL RE-ROUTE THE BRAKE BOOSTER VACUUM SUPPLY HOSE.

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

2

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.