NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
117 reportsClear category filter85,000 miles · Nov 19, 2014
Service BrakesService Brakes, Hydraulic
ON MY 2002 SILVERADO, THE ABS ACTIVATES AT LOW SPEEDS CAUSING BRAKES TO PULSE AND INCREASE STOPPING DISTANCE. CLEARLY NHTSA REFERENCE #05V379000 STATES THAT THIS ONLY AFFECTS CERTAIN STATES. MY VEHICLE FALLS INTO THE MANUFACTURER'S RECALL DATE RANGE AS IT WAS MANUFACTURED IN AUGUST 2001. CHEVROLET REFUSES TO FIX THIS ISSUE UN…
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ON MY 2002 SILVERADO, THE ABS ACTIVATES AT LOW SPEEDS CAUSING BRAKES TO PULSE AND INCREASE STOPPING DISTANCE. CLEARLY NHTSA REFERENCE #05V379000 STATES THAT THIS ONLY AFFECTS CERTAIN STATES. MY VEHICLE FALLS INTO THE MANUFACTURER'S RECALL DATE RANGE AS IT WAS MANUFACTURED IN AUGUST 2001. CHEVROLET REFUSES TO FIX THIS ISSUE UNDER A RECALL AND ARE TELLING ME THAT THEY DO NOT ISSUE RECALLS THAT ARE STATE SPECIFIC AND THAT MY VEHICLE DOES NOT QUALIFY. NEEDING HELP GETTING THIS ISSUE RESOLVED. *TR
NHTSA ODI #10659383
Mileage unknown · Sep 19, 2013
Service Brakes, Hydraulic
2002 CHEVROLET SILVERADO 2500. ATTORNEY REPRESENTING CONSUMER WRITES IN REGARDS TO ENGINEERING ANALYSIS OF FAULTY BRAKE LINES THAT FAILED. *SMD
NHTSA ODI #10544752
132,400 miles · Oct 2, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500HD. THE CONTACT STATED WHILE DRIVING THE BRAKES FAILED. THE CONTACT WAS ONLY ABLE TO STOP THE VEHICLE AS THE SPEED DECREASED. THE CONTACT TOOK THE VEHICLE TO HIS LOCAL MECHANIC, WHO STATED THE BRAKE FLUID LEAKED OUT AND THE FRONT AND REAR BRAKE LINES WERE COMPLETELY COVERED WIT…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500HD. THE CONTACT STATED WHILE DRIVING THE BRAKES FAILED. THE CONTACT WAS ONLY ABLE TO STOP THE VEHICLE AS THE SPEED DECREASED. THE CONTACT TOOK THE VEHICLE TO HIS LOCAL MECHANIC, WHO STATED THE BRAKE FLUID LEAKED OUT AND THE FRONT AND REAR BRAKE LINES WERE COMPLETELY COVERED WITH RUST. THE VEHICLE WAS REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 132,400. UPDATED 11/01/12 *BF THE BRAKE LINES WERE REPLACED WITH STAINLESS STEEL LINES. UPDATED 11/02/12
NHTSA ODI #10478250
Mileage unknown · May 8, 2012
Service Brakes, Hydraulic
RUSTED HOLE IN BRAKE LINE. *TR
NHTSA ODI #10457759
97,000 miles · Mar 24, 2012
Service Brakes, Hydraulic
DRIVING DOWN HIGHWAY, APPLIED BRAKES TO FEEL THE PEDAL GO TO FLOOR. ABLE TO STOP AND INSPECT AFTER SOME DISTANCE. REAR STEEL BRAKE LINE UNDER TRUCK BED HAD CORRODED THROUGH, AND WITH A PUSH OF THE PEDAL, BRAKE FLUID SPRAYED EVERYWHERE. HAD TO HAVE LINE REPLACED FROM DIVERTER BOX UNDER CAB TO REAR CROSSOVER AT DRIVER REAR WHEEL, …
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DRIVING DOWN HIGHWAY, APPLIED BRAKES TO FEEL THE PEDAL GO TO FLOOR. ABLE TO STOP AND INSPECT AFTER SOME DISTANCE. REAR STEEL BRAKE LINE UNDER TRUCK BED HAD CORRODED THROUGH, AND WITH A PUSH OF THE PEDAL, BRAKE FLUID SPRAYED EVERYWHERE. HAD TO HAVE LINE REPLACED FROM DIVERTER BOX UNDER CAB TO REAR CROSSOVER AT DRIVER REAR WHEEL, BADLY CORRODED! NOW IT IS MARCH OF 2012 (107,000 MILES), AND THE FRONT LINES FROM THE MASTER CYLINDER TO DIVERTER ARE LEAKING AS WELL. THANKFULLY I NOTICED BEFORE DRIVING. I AM HAVING THE BAD LINE REPLACED, AND I AM LOOKING FOR A STAINLESS STEEL REPLACEMENT FOR ALL LINES! *TR
NHTSA ODI #10452882
133,000 miles · Feb 29, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 5 MPH AND DEPRESSING THE BRAKES, THE ABS ACTIVATED ERRONEOUSLY. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTICS WHERE THE TECHNICIAN STATED THAT THE FRONT DRIVER SIDE SPEED SENSOR WAS CORRODED AND WOULD HAVE TO BE CLEANED. THE FAILURE CONTIN…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 5 MPH AND DEPRESSING THE BRAKES, THE ABS ACTIVATED ERRONEOUSLY. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTICS WHERE THE TECHNICIAN STATED THAT THE FRONT DRIVER SIDE SPEED SENSOR WAS CORRODED AND WOULD HAVE TO BE CLEANED. THE FAILURE CONTINUED AFTER THE SPEED SENSOR WAS CLEANED. THE CONTACT REPLACED THE FRONT PASSENGER SIDE WHEEL BEARING, HUB ASSEMBLY AND SPEED SENSOR INDEPENDENTLY YET THE FAILURE PERSISTED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 133,000.
NHTSA ODI #10449728
88,000 miles · Feb 21, 2012
Service Brakes, Hydraulic
WE HAVE JUST HAD 27 FEET OF FRONT BRAKE LINE REPLACED FOR THE SECOND TIME IN OUR 2002 CHEVY SILVERADO 2500 SERIES. TWO YEARS AGO LOST BRAKES AND LUCKILY AVOIDED AN ACCIDENT. GM DEALERSHIP REPLACED, AND THE LINE FAILED YET AGAIN LAST WEEK. THIS TIME MY 19-YEAR-OLD SON WAS DRIVING WITH A PASSENGER. LUCKILY, HE AVOIDED THE CARS…
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WE HAVE JUST HAD 27 FEET OF FRONT BRAKE LINE REPLACED FOR THE SECOND TIME IN OUR 2002 CHEVY SILVERADO 2500 SERIES. TWO YEARS AGO LOST BRAKES AND LUCKILY AVOIDED AN ACCIDENT. GM DEALERSHIP REPLACED, AND THE LINE FAILED YET AGAIN LAST WEEK. THIS TIME MY 19-YEAR-OLD SON WAS DRIVING WITH A PASSENGER. LUCKILY, HE AVOIDED THE CARS IN FRONT OF HIM AT A STOP LIGHT BY CROSSING TWO LANES SO THAT HE COULD SLOW THE VEHICLE DOWN ON THE GRASSY ROADSIDE. REFUSED TO TAKE TO GM FOR REPAIR THIS TIME. SOMETHING HAS TO BE DONE ABOUT FAULTY CHEVY BRAKELINES IN EARLY 2000 CHEVY TRUCKS BEFORE SOMEONE LOSES THEIR LIFE. *TR
NHTSA ODI #10448630
77,000 miles · Jan 17, 2012
Service Brakes, Hydraulic
COMPLETE BRAKE FAILURE WHEN I APPLIED THE BRAKES TO STOP. ALL BRAKE LINES COMING OUT OF THE BLOCK BY THE DRIVERSIDE FRONT DOOR ARE RUSTED BEYOND RECOGNITION. REAR BREAK LINE FAILURE OCCURRED IN 2010 SAME BRAKE LINE CONDITION. I KEEP MY TRUCK CLEAN AND DO NOT OFF ROAD WITH IT. *TR
NHTSA ODI #10444284
71,662 miles · Jan 13, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 25 MPH, THE BRAKE PEDAL WAS APPLIED WHICH EXTENDED TO THE FLOOR WITHOUT ANY RESPONSE. THE VEHICLE FAILED TO SLOW DOWN AND IN ORDER TO STOP THE TRAILER BRAKES WERE ENGAGED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE ABS MODULE'S M…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 25 MPH, THE BRAKE PEDAL WAS APPLIED WHICH EXTENDED TO THE FLOOR WITHOUT ANY RESPONSE. THE VEHICLE FAILED TO SLOW DOWN AND IN ORDER TO STOP THE TRAILER BRAKES WERE ENGAGED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE ABS MODULE'S MAIN BRAKE LINE WAS REPLACED. THE FAILURE RECURRED AND THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR THE SECOND TIME; HOWEVER THE MAIN BRAKE LINE CONNECTED TO THE MASTER CYLINDER WAS REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 71,662.
NHTSA ODI #10443714
129,016 miles · Jan 13, 2012
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 4 MPH, THE BRAKE PEDAL EXTENDED TO FLOOR UPON ENGAGING. THERE WAS A SIGNIFICANT DELAY IN THE BRAKE RESPONSE. THE FAILURE RECURRED WHENEVER THE VEHICLE WAS IN MOTION AT LOW SPEEDS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED…
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TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 4 MPH, THE BRAKE PEDAL EXTENDED TO FLOOR UPON ENGAGING. THERE WAS A SIGNIFICANT DELAY IN THE BRAKE RESPONSE. THE FAILURE RECURRED WHENEVER THE VEHICLE WAS IN MOTION AT LOW SPEEDS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE CONSTANT MALFUNCTION. THE APPROXIMATE FAILURE MILEAGE WAS 129,016. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10443660
NHTSA investigations
4EA07013 · 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.
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