IllustrationWAS DRIVING UP A BOAT LAUNCH WHEN BRAKE PEDDLE WENT TO THE FLOOR LUCKY WE WEREN'T ON THE HIGWAY. *TR
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 →How this year compares
Owner complaints by model year
Compare all Silverado 2500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
50–25K
1325–50K
1750–75K
2075–100K
26100–150K
17150K+
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 reportsTHE HYDRAULIC PUMP SHAFT BROKE THE EVENING BEFORE VERY COMMON ON THESE TRUCKS AND CHEVROLET DID A LIMITED RECALL. AFTER REPLACING THE PUMP THE REAR MAIN BRAKE LINE WAS RUSTED AND COULD NOT HANDLE THE PRESSURE OF THE NEW PUMP. *JS
MY BRAKES FAILED WITHOUT WARNING IN A PARKING LOT. CAREFULLY, I MADE IT HOME WITH NO BRAKES AND FOUND THE BRAKE LINES WERE ALL CORRODED AND LEAKED BRAKE FLUID. BRAKE LINES ARE SUPPOSED TO BE MADE FROM NON-CORROSIVE MATERIAL. FIXING BRAKES ON THIS MODEL PICKUP IS A MASSIVE UNDERTAKING. ONE BRAKE LINE IS LOCATED UNDER THE BED …
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MY BRAKES FAILED WITHOUT WARNING IN A PARKING LOT. CAREFULLY, I MADE IT HOME WITH NO BRAKES AND FOUND THE BRAKE LINES WERE ALL CORRODED AND LEAKED BRAKE FLUID. BRAKE LINES ARE SUPPOSED TO BE MADE FROM NON-CORROSIVE MATERIAL. FIXING BRAKES ON THIS MODEL PICKUP IS A MASSIVE UNDERTAKING. ONE BRAKE LINE IS LOCATED UNDER THE BED OF THE TRUCK. *TR WHEN THE CONSUMER EXAMINED THE BRAKES ON THE VEHICLE, HE WAS SHOCKED TO SEE THE EXTENT OF CORROSION ON THE MEAL BRAKE LINE. HE WAS ALSO SHOCKED TO FIND THAT FOR ONE OF THE BRAKE LINES, HE HAD TO REMOVE THE TRUCK BED, IN ORDER TO SEE IT. THE FIRST RUPTURE OCCURRED ON THE LINE RUNNING FROM THE METERING OR PROPORTIONAL VALVE TO THE REAR BRAKES. THERE WAS NO WAY HE COULD SEE THAT AREA. THE SECOND FAILURE OCCURRED DURING BLEEDING AND TESTING OF THE FIRST REPAIR. THE THIRD LEAK APPEARED BY THE MOVEMENT OF THE LINE DURING THE SECOND REPAIR. ALL WERE DUE TO CORROSION IN WHAT SHOULD HAVE BEEN NON-CORROSIVE MATERIAL. THE CONSUMER STATED THE LOCATION OF THE BRAKE LINES AND THE MATERIALS USED WERE TOTALLY UNACCEPTABLE AND HE IS SEEKING REIMBURSEMENT FOR PARTS AND LABOR. UPDATED 06/29/12. *JB
JUST BACKED INTO THE ST. CLAIR RIVER TO RETRIEVE SMALL BOAT. LOADED BOAT. AS I PUT MY FOOT DOWN ON BRAKE PEDAL TO MOVE TRANSMISSION TO DRIVE, BRAKE PEDAL WENT TO FLOOR, GOT THE TRANS TO NEUTRAL, BUT NOT TO DRIVE. THE TRUCK AND BOAT STARTED TO ROLL INTO RIVER. PANIC SITUATION... JAMBED TRANS INTO DRIVE, AND WAS ABLE TO GET…
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JUST BACKED INTO THE ST. CLAIR RIVER TO RETRIEVE SMALL BOAT. LOADED BOAT. AS I PUT MY FOOT DOWN ON BRAKE PEDAL TO MOVE TRANSMISSION TO DRIVE, BRAKE PEDAL WENT TO FLOOR, GOT THE TRANS TO NEUTRAL, BUT NOT TO DRIVE. THE TRUCK AND BOAT STARTED TO ROLL INTO RIVER. PANIC SITUATION... JAMBED TRANS INTO DRIVE, AND WAS ABLE TO GET TRUCK OUT OF RIVER, WITH WATER LINE HALF WAY UP DRIVERS DOOR. ONCE HOME DISCOVERED BADLY RUSTED BRAKE LINE ABOVE FUEL TANK RUPTURED. REPAIRED... TWO MONTHS LATER, WHILE WIFE WAS DRIVING TRUCK TO WORK, BRAKE LINE BETWEEN MASTER CYLINDER AND ABS MODUAL FAILED. HAD ENOUGH! REPLACED ALL BRAKE LINES ON TRUCK EXCEPT THE ONE OVER REAR AXEL. I STILL WILLD O THAT ONE ALSO. ABS/BRAKE LIGHTS ON DASH ARE STILL ILLUMINATED. STILL TRYING TO FIGURE OUT THAT ISSUE.. MANY DISCUSSIONS WITH OTHER SILVERADO OWNERS, AND AUTOPARTS EMPLOYEES. THIS SEEMS TO BE A VERY COMMON ISSUE, WITH VERY DANGAROUS POTENTIAL FOR INJURYS.. *TR
ON 11/23/2011 AT 6:45 AM EST, I WAS HEADED DOWN A SNOW COVERED ROAD WHEN I NOTICED A PLOW TRUCK COMING TOWARDS ME AT A HIGH RATE OF SPEED. I THEN HIT THE BRAKES AT NORMAL PRESSURE AND THE PEDAL WENT TO THE FLOOR WITH NEXT TO NO RESISTANCE, HAVING NO BRAKES I DOWNSHIFTED THE AUTOMATIC TRANSMISSION SLOWING ME BUT NOT FAST ENOUGH, …
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ON 11/23/2011 AT 6:45 AM EST, I WAS HEADED DOWN A SNOW COVERED ROAD WHEN I NOTICED A PLOW TRUCK COMING TOWARDS ME AT A HIGH RATE OF SPEED. I THEN HIT THE BRAKES AT NORMAL PRESSURE AND THE PEDAL WENT TO THE FLOOR WITH NEXT TO NO RESISTANCE, HAVING NO BRAKES I DOWNSHIFTED THE AUTOMATIC TRANSMISSION SLOWING ME BUT NOT FAST ENOUGH, I COLLIDED WITH A FIRE HYDRANT AT THE TOP OF A STEEP EMBANKMENT ON THE SIDE OF THE AT APPROXIMATELY 35MPH AND KNOCKED THE FIRE HYDRANT OUT OF THE GROUND. HAD THE FIRE HYDRANT NOT BEEN THERE, I COULD'VE FELL MORE THAN 50 FEET DOWN TO MY DEMISE. LUCKILY, THE HYDRANT WAS SHUT OFF AND THE ONLY DAMAGE (BECAUSE THE PLOW FRAME ABSORBED MOST OF THE IMPACT) WAS THE FRONT BUMPER. I HAVE HAD TO PAY $75 JUST TO HAVE THE LINE PATCHED GOOD ENOUGH FOR THE TRUCK TO BE DRIVABLE, WITH IMMINENT FAILURE OF THE REAR BRAKE LINES ACROSS THE REAR AXLE AND THE FRONT BRAKE LINES TO THE FRONT BRAKE CALIPERS. I HAVE HAD THIS PROBLEM WITH BOTH MY CHEVROLET SILVERADO 2500 (MODEL YEAR 2000) AND MY CHEVROLET SILVERADO 1500 (MODEL YEAR 1999). *TR
HARD BRAKE LINE FAILURE ON DRIVER'S SIDE. SOFT PEDAL AND INCREASED STOPPING DISTANCE. EXORBITANT CORROSION OF LINES. ALL METAL LINES NEED REPLACEMENT ON INSPECTION. ALSO EXCESSIVE RUSTING OF ENTIRE UNDERSIDE OF VEHICLE. *TR
THE BRAKE LINES HAVE CORRODED AND LEAKED FLUID OUT AND IT CAUSED COMPLETE FAILURE OF BRAKING SYSTEM. THERE WERE NO SYMPTOMS GIVING WARNING TO THIS FAILURE. *TR
BRAKES FAILED DUE TO LOSS OF BRAKE FLUID THROUGH BROKEN RUSTED THROUGH STEEL BRAKE LINES. UPON FURTHER INSPECTION ALL BRAKE LINES ARE IN SIMILAR CONDITION. *TR
THE MAIN BRAKE LINE FROM THE MASTER CYLINDER TO THE ANTILOCK UNIT RUSTED THROUGH AND LEAKED CAUSING THE BRAKES TO FAIL. *TR
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT AN ABNORMAL ODOR ENTERED INTO THE VEHICLE CABIN ACCOMPANIED BY AN UNUSUAL NOISE FROM THE ENGINE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE CONTACT WAS ADVISED THAT THE MANIFOLD BOLTS WERE FRACTURED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WA…
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TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT AN ABNORMAL ODOR ENTERED INTO THE VEHICLE CABIN ACCOMPANIED BY AN UNUSUAL NOISE FROM THE ENGINE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE CONTACT WAS ADVISED THAT THE MANIFOLD BOLTS WERE FRACTURED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 43,000. THE VIN WAS NOT AVAILABLE.
Official recalls
100V222000 · 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
2EA04012 · 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.