IllustrationWe were in a roll over accident going under 30mph. I was a passenger in the back seat. When I woke up I saw that the driver was hanging out the door window. The air bags did not deploy. The driver who was also the owner of the truck died of multiple blunt forces. The insurance company had the truck towed to COPART in Las Vegas.
2002 GMC Sierra 2500
Owner reports · Recalls · Investigations
More warning signs than most Sierra 2500 years
Owner complaints for the 2002 GMC Sierra 2500 are substantially higher than the model-year median of 46.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra 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
110–25K
1525–50K
2450–75K
1975–100K
30100–150K
15150K+
114 reports with mileage · 20 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 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 32 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
10 crash reports1 fire reports5 injury reports
What owners actually said
134 reportsWHILE TRAVELING ON THE HIGHWAY WE HIT BLACK ICE AND ULTIMATELY ENDED UP WITH A FRONT IMPACT WHICH TURNED INTO A 2 TIME VEHICLE ROLLOVER. BOTH FRONT SEAT BELTS AND BUCKLED DURING THE ROLLOVER AND DID NOT LOCK AND NEITHER OF THE AIRBAGS IN FRONT WHEN OFF AT ANY POINT DURING THE COLLISION
I PURCHASE THIS TRUCK 2/03/17 AND HAVE USED IT UNTIL 2 WEEKS AGE WHEN THE BRAKE LINES BROKE IN MY DRIVEWAY, I AM HAVING THE LINES REPLACED WITH STAINLESS LINES AT A COST OF ABOUT $1200 ( I AM NOT SURE OF THE TOTAL COST BECAUSE IT ALSO NEEDS A ANTILOCK BRAKING PUMP WHICH WAS BADLY CORRODED) THE FUEL LINGS ARE ALSO RUSTED AND NEED…
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I PURCHASE THIS TRUCK 2/03/17 AND HAVE USED IT UNTIL 2 WEEKS AGE WHEN THE BRAKE LINES BROKE IN MY DRIVEWAY, I AM HAVING THE LINES REPLACED WITH STAINLESS LINES AT A COST OF ABOUT $1200 ( I AM NOT SURE OF THE TOTAL COST BECAUSE IT ALSO NEEDS A ANTILOCK BRAKING PUMP WHICH WAS BADLY CORRODED) THE FUEL LINGS ARE ALSO RUSTED AND NEED TO BE REPLACED AND ALSO THE TRANSMISSION COOLING LINES NEED TO BE REPLACED AT A COST TO BE DETERMINED LATER. I HAVE A 1953 CHEVY PICKUP THAT STILL HAS GOOD BRAKE LINES AND THE FRAME IS IN BETTER SHAPE THAN THE NEWER ONES, IF GM LOOKED TO THE PAST AT THE MATERIALS & METHODS THEY MIGHT BUILD A BETTER PRODUCT RATHER THAN THE GARBAGE THEY PRODUCE NOW! I AM GLAD I DIDN'T PAY $30-$60,000 FOR THIS TRUCK.
THE TUBULAR FRAME THAT SUPPORTS BOTH THE GAS TANK AND REAR PASSENGER SIDE SHOCK ABSORBER EXTREMELY RUSTS OUT CAUSING THE FRAME TO EVENTUALLY DISCONNECT FROM ITSELF AND ALLOW THE GAS TANK TO DROP AND/OR THE SHOCK TO DISCONNECT FROM THE AXLE, BOTH IN WHICH MAY CAUSE A FATAL ACCIDENT.
WHILE DRIVING OF A CITY STREET, AT A SLOW RATE (10-15MPH) AND TAKING A SLOW, APPROXIMATELY 90 DEGREE LEFT TURN, I HEARD A LOUD "POPPING/BREAKING SOUND". WHILE MAKING THE TURN, I INITIALLY HAD TURNING CAPABILITIES UNTIL I HEARD THE "POP" SOUND. UPON HEARING THE SOUND, I NO LONGER HAD THE ABILITY TO TURN THE WHEELS TO EITHER DIREC…
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WHILE DRIVING OF A CITY STREET, AT A SLOW RATE (10-15MPH) AND TAKING A SLOW, APPROXIMATELY 90 DEGREE LEFT TURN, I HEARD A LOUD "POPPING/BREAKING SOUND". WHILE MAKING THE TURN, I INITIALLY HAD TURNING CAPABILITIES UNTIL I HEARD THE "POP" SOUND. UPON HEARING THE SOUND, I NO LONGER HAD THE ABILITY TO TURN THE WHEELS TO EITHER DIRECTION. UPON STOPPING AND TURNING OFF THE TRUCK, I FOUND THE PITMAN ARM(CONNECTED TO STEERING BOX AND STEERING BAR) WAS DETACHED FROM THE STEERING BAR BUT STILL ATTACHED TO STEERING BOX. THE BOLT OF THE PITMAN ARM HAD BROKEN OFF CLEANLY FROM THE STEERING BAR, RENDERING MY STEERING CAPABILITIES INEFFECTUAL. ATTACHED IS A PICTURE OF THE PITMAN ARM SHEERED BOLT. I WOULD LIKE TO FILE A COMPLAINT THAT THIS DEFECTIVE PIECE OF MATERIAL COULD HAVE COST DAMAGE TO LIFE, PROPERTY AND POTENTIALLY DEATH OF MYSELF OR OTHERS ON THE ROAD. I WOULD LIKE SOME FORM OF RESTITUTION ON PART OF THE MANUFACTURE. THE TOTAL COST OF THE REPAIR WAS APPROXIMATELY $225 USD. I CAN PROVIDE THE BILL FOR TOWING, MECHANICAL REPAIRS AND COST OF REPLACEMENT PART. *TR
ANTI-LOCK BRAKES ENGAGE ON DRY PAVEMENT JUST PRIOR TO COMING TO A COMPLETE STOP.
I HAVE OWNED MANY GM TRUCKS, AND NEVER HAD ONE WITH SO MANY RUSTED OUT BRAKE LINES. WHY CAN'T THEY MAKE THEM WITH STAINLESS STEEL LINES. THEY SHOULD HAVE A RECALL FOR THIS. WHAT HAPPENS WHEN FRONT AND BACK LINES GO AT THE SAME TIME, I WILL TELL YOU, NO BRAKES ! THIS IS THE WORST ONE WITH THE RUST THAT I HAVE HAD. 3 LINES RUST OU…
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I HAVE OWNED MANY GM TRUCKS, AND NEVER HAD ONE WITH SO MANY RUSTED OUT BRAKE LINES. WHY CAN'T THEY MAKE THEM WITH STAINLESS STEEL LINES. THEY SHOULD HAVE A RECALL FOR THIS. WHAT HAPPENS WHEN FRONT AND BACK LINES GO AT THE SAME TIME, I WILL TELL YOU, NO BRAKES ! THIS IS THE WORST ONE WITH THE RUST THAT I HAVE HAD. 3 LINES RUST OUT ON THE GMC 2500 HD (2002) WITH MORE TO COME, I HAVE 25,000 MILES ON THIS TRUCK. THE FIRST LINE WENT ABOUT 15,000 MILES. ALSO I ONLY GOT ABOUT 5,000 MILES ON THOSE FIRESTONE TIRES, CHEAP TIRES COME WITH THIS TRUCK. I HAVE ALSO NOTICED THE FRAME IS RUSTING, HAD TO HAVE THE CABLE REPLACED THAT SHIFTS THE TRUCK INTO GEAR, IT RUSTED OUT. I GO TO THE CAR WASH AND ALWAYS WASH THE UNDERSIDE OF THE TRUCK TO GET ALL THE DIRT AND SALT OFF EVERY CHANCE I GET. WHEN I GOT THE GMC I WAS TOLD BY THE GMC GARAGE NOT TO HAVE THE TRUCK UNDERCOATED BECAUSE IT WOULD VOID THE WARRANTY ON IT. I ALSO HAD TO HAVE THE CABLES REPLACED ON THE TAIL GATE DUE TO RUST. VERY SAD ABOUT THIS GMC TRUCK. EVERYTHING IS RUSTING. I SHOULD HAVE A LOT OF MILES LEFT ON THIS TRUCK, IF IT DOESN'T RUST ITSELF TO DEATH OR GET ME KILLED BECAUSE OF RUSTED OUT BRAKE LINES !
REAR STEEL BRAKE LINE FAILURE WHILE IN PARKING LOT, COMPLETE LOSS OF BRAKING ABILITY
TL* THE CONTACT OWNS A 2002 GMC SIERRA 2500 HD. THE CONTACT STATED THAT WHILE DRIVING 5 MPH, WHEN THE BRAKE PEDAL WAS DEPRESSED AND THE BRAKES FAILED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000.
DRIVING INTO DRIVEWAY APPLIED BRAKES , PEDAL WENT RIGHT TO THE FLOOR NO WARNING LIGHT OR ANY INDICATION OF A PROBLEM GOT OUT OF TRUCK AND FOUND FLUID DRIPPING OFF FRAME BY FUEL TANK. RUPTURED LINE ABOVE TANK ON FRAME, OTHER BRAKE LINES ALSO LOOK CORRODED. AFTER SOME RESEARCH I FOUND THIS TO BE A COMMON PROBLEM ON GM TRUCKS . …
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DRIVING INTO DRIVEWAY APPLIED BRAKES , PEDAL WENT RIGHT TO THE FLOOR NO WARNING LIGHT OR ANY INDICATION OF A PROBLEM GOT OUT OF TRUCK AND FOUND FLUID DRIPPING OFF FRAME BY FUEL TANK. RUPTURED LINE ABOVE TANK ON FRAME, OTHER BRAKE LINES ALSO LOOK CORRODED. AFTER SOME RESEARCH I FOUND THIS TO BE A COMMON PROBLEM ON GM TRUCKS . OWNERS NEED TO BE MADE AWARE OF THIS PROBLEM BEFORE SOMEONE IS SERIOUSLY HURT. I BELIEVE GM SHOULD BE FORCED TO REPAIR THE DEFECTIVE LINES. *TR
Official recalls
101V220000 · 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
3EA07013 · 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.
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.