NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
132 reports26,500 miles · Aug 2, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS AND DEPRESSING THE BRAKES, THE PEDAL WOULD GO STRAIGHT TO THE FLOOR. THE VEHICLE WAS TAKEN TO A DEALER AND THEY ADVISED HER THAT THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS…
Read full complaint
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT WHILE DRIVING AT LOW SPEEDS AND DEPRESSING THE BRAKES, THE PEDAL WOULD GO STRAIGHT TO THE FLOOR. THE VEHICLE WAS TAKEN TO A DEALER AND THEY ADVISED HER THAT THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 26,500. THE VIN WAS UNAVAILABLE. UPDATED 2/21/12 *CN
NHTSA ODI #10416660
51,000 miles · Mar 27, 2011
Service Brakes, Hydraulic
ALL OF THE BRAKE LINES IN MY 2000 CHEVY SILVERADO ARE COMPLETELY RUSTED OUT. I HAVE HAD THE BRAKES STOP WORKING AFTER A BRAKE LINE RUPTURED WITH NO WARNING ON TWO DIFFERENT OCCASIONS. *TR
NHTSA ODI #10393015
105,597 miles · Mar 9, 2011
Service Brakes, Hydraulic
I WAS DRIVING MY 2000 CHEVROLET SILVERADO 2500 PICKUP AND PULLING AN EMPTY 16\' CARGO TRAILER, AND STARTED TO DECEND A 8% GRADE HILL. I HAD THE TRANS IN TOW MODE AND STARTED APPLYING THE BRAKES TO SLOW FROM APPROX 50 MPH, AS I WAS GOING TO TURN AT THE BOTTOM OF THE HILL. THE BRAKES FIRST HELD AND THEN AS I HELD BRAKE PEDAL PRESS…
Read full complaint
I WAS DRIVING MY 2000 CHEVROLET SILVERADO 2500 PICKUP AND PULLING AN EMPTY 16\' CARGO TRAILER, AND STARTED TO DECEND A 8% GRADE HILL. I HAD THE TRANS IN TOW MODE AND STARTED APPLYING THE BRAKES TO SLOW FROM APPROX 50 MPH, AS I WAS GOING TO TURN AT THE BOTTOM OF THE HILL. THE BRAKES FIRST HELD AND THEN AS I HELD BRAKE PEDAL PRESSURE CONSTANT THE PEDAL WENT TO THE FLOOR. I QUICKLY REALIZED I WAS IN TROUBLE AND PULLED THE TRANS TO 3 AND THEN 2. THANK GOD THERE WAS NO ONE IN FRONT OF ME MAKING THE SAME LEFT TURN AS I, AS THERE WAS A STEEP TREE LINED HILL TO MY RIGHT AND IT WOULD HAVE BEEN CATASTROPHIC AT THAT POINT. I STEPPED ON THE EMERGENCY BRAKE AND GOT THE TRUCK STOPPED BUT MISSED MY TURN BY APPROX. 100 FEET. I RECOVERED MY COMPOSURE AND AFTER A FEW MINUTES STOPPED SHAKING ENOUGH TO LIMP MY TRUCK HOME USING THE EMERGENCY BRAKE AND 2ND GEAR. I WAS APPROX. 2 MILES FROM MY HOME ON A COUNTRY BLACKTOP ROAD. WHEN CHECKING OUT THE TRUCK BRAKE LINES FOUND THEM TO BE EXTREMELY RUSTY AND IN ONE PLACE SPLIT. I REPLACED THAT LINE ONLY TO FAIL A 2ND LINE WHILE BLEEDING THE BRAKES IN MY DRIVEWAY. AFTER REPLACING THE 2 LINES FROM THE MASTER CYLINDER TO THE ABS MODULE AND THE 2 LINES FROM THE MODULE TO THE FRONT WHEEL CYLINDERS, I AGAIN VENTURED OUT ONLY TO AGAIN LOSE MY BRAKES ON THE DOWNGRADE OF MY DRIVEWAY AGAIN, WHICH WAS THE LAST STRAW, AND I REPLACE ALL THE REMAINING LINES. PEDAL IS STILL MUSHY BUT THE BRAKES ARE HOLDING AND NOT LEAKING FLUID. I AM THE 2ND OWNER OF THE TRUCK AND PUT MAYBE 3,000 MILES A YEAR ON THE TRUCK. I ALSO OWN A 1997 AUTOMOBILE WHICH HAS OVER 300,000 MILES AND NEVER HAD A BRAKE PROBLEM AND THE BRAKE LINES SHOW VERY LITTLE RUST, AND I DRIVE THIS VEHICLE ALL WINTER WHILE I MIGHT USE THE TRUCK A HALF DOZEN TIMES DURING ADVERSE CONDITIONS. I BELIEVE GM IS AT FAULT HERE BY PUTTING CHEAP STEEL BRAKE LINES ON THEIR TRUCKS, PROBABLY AS A COST REDUCTION SINCE THEY
NHTSA ODI #10389588
299,001 miles · Mar 2, 2011
Service Brakes, Hydraulic
WHILE DRIVING MY SILVERADO APPROACHING A STOP SIGN AT 25 MPH, THE BRAKES FAILED WITHOUT WARNING, A CAR IN FRONT OF ME ALREADY STOPPED THERE! I HAD SWERVE AROUND BY GOING ON THE SIDEWALK AND USE THE EMERGENCY BRAKE TO STOP, THANK GOD I DIDN'T HIT THAT CAR OR ANY PEDESTRIANS. I NOTICED BRAKE FLUID DRIPPING FROM FRAME ABOVE LEFT …
Read full complaint
WHILE DRIVING MY SILVERADO APPROACHING A STOP SIGN AT 25 MPH, THE BRAKES FAILED WITHOUT WARNING, A CAR IN FRONT OF ME ALREADY STOPPED THERE! I HAD SWERVE AROUND BY GOING ON THE SIDEWALK AND USE THE EMERGENCY BRAKE TO STOP, THANK GOD I DIDN'T HIT THAT CAR OR ANY PEDESTRIANS. I NOTICED BRAKE FLUID DRIPPING FROM FRAME ABOVE LEFT REAR WHEEL & REAR AXEL. I HAD THE SILVERADO TOWED TO THE GM SERVICE CENTER TO INSPECT THE BRAKE LINES; $99.00 PLUS TAX GM SERVICE CENTER SAID BRAKE LINES WHERE RUSTED THROUGH AND WOULD BE $1,012.98 PLUS TAX! TO REPAIR LEAKING LINES. I BELIEVE THIS IFAILURE IS DUE TO GM NOT UTILIZING STAINLESS STEEL BRAKE LINES. *TR
NHTSA ODI #10386203
162,000 miles · Jan 30, 2011
Service Brakes, Hydraulic
BRAKE SYSTEM FAILURE DUE TO BRAKE LINE CORROSION. THIRD TIME THIS HAS HAPPENED. FIRST TWO INSTANCES WERE ON THE REAR LINES DUE TO EXPOSURE TO SALT SPRAY. RECENT OCCURRENCE WAS LOCATED AT THE RETAINMENT CLIP HOLDING THE TWO LINES RUNNING DOWNSTREAM OF THE MASTER CYLINDER TO THE FRAME RAIL. BOTH LINES RUSTED THROUGH AND BEGAN …
Read full complaint
BRAKE SYSTEM FAILURE DUE TO BRAKE LINE CORROSION. THIRD TIME THIS HAS HAPPENED. FIRST TWO INSTANCES WERE ON THE REAR LINES DUE TO EXPOSURE TO SALT SPRAY. RECENT OCCURRENCE WAS LOCATED AT THE RETAINMENT CLIP HOLDING THE TWO LINES RUNNING DOWNSTREAM OF THE MASTER CYLINDER TO THE FRAME RAIL. BOTH LINES RUSTED THROUGH AND BEGAN LEAKING. LINES STARTED LEAKING WHEN BRAKES WERE APPLIED IN ICY CONDITIONS. ABS SYSTEM ENGAGED AND THE ADDED PRESSURE LEAD TO LINE FAILURE. VEHICLE CONTINUED INTO INTERSECTION DUE TO REDUCED BRAKE FUNCTION. FORTUNATELY DID NOT RESULT IN A CRASH. *TR
NHTSA ODI #10379594
119,400 miles · Jan 3, 2011
Service Brakes, Hydraulic
BRAKE LINE FAILURE, LEFT SIDE BEHIND WHEEL WHERE LINES RUN ON TOP OF FRAME. WHILE IN THE DRIVE THRU LANE AT FAST FOOD RESTRAINT. NEARLY PINNED PEDESTRIAN BETWEEN MY TRUCK AND THE VEHICLE IN FRONT OF ME. *TR
NHTSA ODI #10373914
182,000 miles · Dec 9, 2010
Service Brakes, Hydraulic
BRAKE LINE LEAKING FLUID. WIFE STEPPED ON BRAKES AND ROLLED THROUGH INTERSECTION OF HIGHWAY K AND HIGHWAY N IN ST. CHARLES, MO. THE LINE THAT FAILED IS IN THE BUNDLE ALONG THE FRAME UNDER THE DRIVERS SEAT. ALL THE LINES SHOW SIGNS OF RUST. I UNDERSTAND THIS IS NOT THE FIRST OCCURRENCE. JUST GLAD SHE DID NOT HIT ANYONE OR GET…
Read full complaint
BRAKE LINE LEAKING FLUID. WIFE STEPPED ON BRAKES AND ROLLED THROUGH INTERSECTION OF HIGHWAY K AND HIGHWAY N IN ST. CHARLES, MO. THE LINE THAT FAILED IS IN THE BUNDLE ALONG THE FRAME UNDER THE DRIVERS SEAT. ALL THE LINES SHOW SIGNS OF RUST. I UNDERSTAND THIS IS NOT THE FIRST OCCURRENCE. JUST GLAD SHE DID NOT HIT ANYONE OR GET INJURED. HOPE YOU QUIT DRAGGING YOUR FEET ON THIS ISSUE AND MAKE THE CAR COMPANY THAT THE USA IS INVESTED IN FIX THEIR BRAKE PROBLEM. *TR
NHTSA ODI #10369847
80,000 miles · Oct 1, 2010
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 2500. WHILE PARKING THE VEHICLE THE ELECTRONIC BRAKING SYSTEM FAILED. AS HE DEPRESSED THE BRAKE PEDAL TO STOP THE VEHICLE THEY FAILED TO ENGAGE. HE HAD TO CONTINUALLY PRESS THE BRAKES WITH EXCESSIVE FORCE. THE DEALER AND THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS …
Read full complaint
TL*THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 2500. WHILE PARKING THE VEHICLE THE ELECTRONIC BRAKING SYSTEM FAILED. AS HE DEPRESSED THE BRAKE PEDAL TO STOP THE VEHICLE THEY FAILED TO ENGAGE. HE HAD TO CONTINUALLY PRESS THE BRAKES WITH EXCESSIVE FORCE. THE DEALER AND THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 80,000.
NHTSA ODI #10358730
100,000 miles · Sep 1, 2010
Service Brakes, Hydraulic
THE BRAKE LINES FAILED ON MY 2000 CHEVY SILVERADO 2500. THE VEHICLE WAS BACKING DOWN A BOAT LAUNCH RAMP AT THE TIME AND WAS STOPPED WITH THE PARKING BRAKE. THE TRUCK HAD TO BE TOWED AND ALL OF THE METAL BRAKE LINES REPLACED (THE BRAKE LINES HAD TO BE MADE BECAUSE GM DOES NOT SELL REPLACEMENT LINE). *TR
NHTSA ODI #10353276
63,000 miles · Aug 15, 2010
Engine And Engine CoolingFire
2000 CHEVROLET 2500 6.0 ENGINE EXHAUST MANIFOLD WARPING CAUSING THE MAIN BOLTS TO BREAK OFF LEADING TO EXHAUST LEAK AND POSSIBLE FIRE. *TR
NHTSA ODI #10349400
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.
Illustration