NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
117 reportsClear category filter119,000 miles · Jun 1, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. WHILE DRIVING LESS THAN 20 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE ABS LIGHT ILLUMINATED. THE VEHICLE SLOWED DOWN, BUT DID NOT COME TO A COMPLETE STOP. THE BRAKE PEDAL EXTENDED TO THE FLOOR, BUT THE VEHICLE DID NOT STOP PROPERLY. THROUGH ONLINE RESEARCH, THE CON…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. WHILE DRIVING LESS THAN 20 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE ABS LIGHT ILLUMINATED. THE VEHICLE SLOWED DOWN, BUT DID NOT COME TO A COMPLETE STOP. THE BRAKE PEDAL EXTENDED TO THE FLOOR, BUT THE VEHICLE DID NOT STOP PROPERLY. THROUGH ONLINE RESEARCH, THE CONTACT FOUND NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK); HOWEVER, HER VIN WAS EXCLUDED BECAUSE SHE DOES NOT LIVE IN ONE OF THE AFFECTED STATES. THE CONTACT BELIEVES THAT HER VEHICLE SHOULD BE INCLUDED IN THE RECALL SINCE THE FAILURES ARE IDENTICAL. THE VEHICLE HAS NOT YET BEEN REPAIRED. THE CURRENT AND FAILURE MILEAGES WERE 119,000.
NHTSA ODI #10272493
70,775 miles · Mar 31, 2009
Service Brakes, Hydraulic
I OWN A 2002 CHEVY 2500 HD AND THE LAST COUPLE OF MONTHS I NOTICED THE ANTI-LOCK BRAKES ACTIVATE AT LOW SPEED. I THOUGHT THIS WAS RELATED TO WINTER SNOW/ICE BUT THIS CONTINUES ON DRY PAVEMENT. I CALLED CHEVY CUSTOMER SERVICE AND WAS ADVISED THERE WERE NO LISTED RECALLS FOR THIS VIN. FOUND NHTSA RECALL 05V379000 & ACTION …
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I OWN A 2002 CHEVY 2500 HD AND THE LAST COUPLE OF MONTHS I NOTICED THE ANTI-LOCK BRAKES ACTIVATE AT LOW SPEED. I THOUGHT THIS WAS RELATED TO WINTER SNOW/ICE BUT THIS CONTINUES ON DRY PAVEMENT. I CALLED CHEVY CUSTOMER SERVICE AND WAS ADVISED THERE WERE NO LISTED RECALLS FOR THIS VIN. FOUND NHTSA RECALL 05V379000 & ACTION # PE05020 LISTS EXACT SYMPTOMS OF VEHICLE EVERY TIME BREAKS ARE APPLIED AT LOW SPEED. ESTIMATED TIME AND COST TO REPAIR 2 HOURS AT APROX $180.00 A CHEVY DEALER WAS CALLED AND I WAS ADVISED THEY CANNOT REPAIR WITHOUT AUTHORIZED RECALL PER THE VIN. THIS SAFETY ISSUE SHOULD APPLY TO THE LISTED VIN. *TR
NHTSA ODI #10263789
30,000 miles · Dec 1, 2008
Service Brakes, Hydraulic
WHEN STEPPING ON BRAKES AT A LOW SPEED, I HAVE VERY LITTLE BRAKING. FEW TIMES CAUSED ME TO COME VERY CLOSE TO VEHICLE IN FRONT OF ME. LOOKED UP ON INTERNET PROBLEMS FOR THIS VEHICLE & FOUND RECALL 05068C. CALLED CHEVY & THEY SAID VEHICLE DOES NOT HAVE RECALL FOR BRAKES. *TR
NHTSA ODI #10250252
51,000 miles · Nov 14, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. WHILE DRIVING APPROXIMATELY 5 MPH ON NORMAL ROAD CONDITIONS, THE CONTACT HEARD A LOUD GRINDING NOISE WHEN THE BRAKE PEDAL WAS DEPRESSED. THERE WERE NO WARNING INDICATORS ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THEY STATED THAT …
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. WHILE DRIVING APPROXIMATELY 5 MPH ON NORMAL ROAD CONDITIONS, THE CONTACT HEARD A LOUD GRINDING NOISE WHEN THE BRAKE PEDAL WAS DEPRESSED. THERE WERE NO WARNING INDICATORS ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THEY STATED THAT THE FAILURE WAS RELATED TO THE ANTILOCK BRAKE SYSTEM. THE VEHICLE HAS NOT BEEN REPAIRED. THE CONTACT WAS CONCERNED OF THE SAFETY RISK INVOLVED. THE FAILURE MILEAGE WAS 51,000 AND CURRENT MILEAGE WAS 53,000.
NHTSA ODI #10248819
47,000 miles · Nov 5, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 40 MPH, THE CONTACT NOTICED THAT THE VEHICLE WOULD VIBRATE WHEN THE BRAKE PEDAL WAS DEPRESSED. THE FAILURE OCCURRED ON SEVERAL OCCASIONS WHILE BRAKING AT LESS THAN 10 MPH. SEVERAL MECHANICS STATED THAT HE NEEDED TO REPLACE THE FRONT WHEEL SPEE…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 40 MPH, THE CONTACT NOTICED THAT THE VEHICLE WOULD VIBRATE WHEN THE BRAKE PEDAL WAS DEPRESSED. THE FAILURE OCCURRED ON SEVERAL OCCASIONS WHILE BRAKING AT LESS THAN 10 MPH. SEVERAL MECHANICS STATED THAT HE NEEDED TO REPLACE THE FRONT WHEEL SPEED SENSORS LOCATED IN THE HUB. THE MANUFACTURER HAS NOT BEEN NOTIFIED. THE VEHICLE HAS NOT BEEN REPAIRED OR PROPERLY DIAGNOSED. THE CURRENT MILEAGE WAS 49,080 AND FAILURE MILEAGE WAS 47,000.
NHTSA ODI #10247728
96,000 miles · Nov 1, 2008
Service Brakes, Hydraulic
UPON BRAKING PEDAL WENT TO FLOOR. RUSTED, PITTED MAIN BRAKE LINE FROM MASTER CYLINDER TO ABS PUMP. NO BRAKES. LINE REPAIRED. WHEN BLEEDING BRAKES ANOTHER LINE BURST. ALL LINES VERY RUSTED AND PITTED. ALL REPLACED. *TR
NHTSA ODI #10247415
37,000 miles · Sep 17, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 20 MPH AND APPROACHING A STOP SIGN, THE ANTILOCK BRAKING SYSTEM BEGAN TO PULSATE WHEN THE BRAKE PEDAL WAS DEPRESSED. THE VEHICLE WAS UNABLE TO STOP AND THE FAILURE PERSISTED. THE CONTACT TOOK THE VEHICLE TO A LOCAL REPAIR SHOP AND THE MECHANIC…
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TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 20 MPH AND APPROACHING A STOP SIGN, THE ANTILOCK BRAKING SYSTEM BEGAN TO PULSATE WHEN THE BRAKE PEDAL WAS DEPRESSED. THE VEHICLE WAS UNABLE TO STOP AND THE FAILURE PERSISTED. THE CONTACT TOOK THE VEHICLE TO A LOCAL REPAIR SHOP AND THE MECHANIC STATED THAT THE FAILURE WAS DUE TO CORROSION OF THE ANTILOCK BRAKE SYSTEM. SHE WAS INFORMED THAT THERE WAS A RECALL FOR THIS SPECIFIC COMPONENT AND WAS ADVISED TO TAKE THE VEHICLE TO THE DEALER. THE DEALER STATED THAT HER VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE MANUFACTURER CONFIRMED THAT THE VEHICLE WAS EXCLUDED AND STATED THAT THEY WERE NOT LIABLE FOR THE REPAIRS. THE CURRENT MILEAGE WAS 38,000 AND FAILURE MILEAGE WAS 37,000.
NHTSA ODI #10242562
14,000 miles · Aug 20, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT THE FRONT ROTORS ARE RUSTING. THE REAR ROTORS ALSO RUSTED, BUT THEY WERE REPLACED UNDER WARRANTY. THE CURRENT MILEAGE WAS 27,129 AND FAILURE MILEAGE WAS 14,000. UPDATED 09/29/08. *LJ
NHTSA ODI #10239040
86,000 miles · Jul 26, 2008
Service Brakes, Hydraulic
BRAKE LINE FAILURE ON MY 2002 CHEVROLET SILVERADO 2500HD. I WAS VERY FORTUNATE THAT THE LINE BROKE AT HOME WHILE I WAS PARKING MY TRAILER. APPARENTLY THERE IS A MAJOR PROBLEM WITH THE STEEL LINES RUSTING OUT PREMATURELY. IF YOU GO ON THE WEB AND LOOK UP BRAKE LINE FAILURE FOR THIS YEAR VEHICLE, YOU WILL FIND MANY. *TR
NHTSA ODI #10235888
160,000 miles · Jun 11, 2008
Service Brakes, Hydraulic
BRAKE LINES FROM THE MASTER CYLINDER TO THE ABS CONTROL UNIT AND FROM THE ABS CONTROL UNIT TO THE FRONT WHEEL BRAKES ARE RUSTED THROUGH. THIS OCCURRED ON JUNE 9, 2008. THE VEHICLE IS ONLY SIX YEARS OLD AND THE BRAKE LINE SHOULD NOT RUST THROUGH THAT QUICKLY. THIS IS A DANGEROUS CONDITION AS ALL OF THE BRAKE FLUID IS PUMPED OUT O…
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BRAKE LINES FROM THE MASTER CYLINDER TO THE ABS CONTROL UNIT AND FROM THE ABS CONTROL UNIT TO THE FRONT WHEEL BRAKES ARE RUSTED THROUGH. THIS OCCURRED ON JUNE 9, 2008. THE VEHICLE IS ONLY SIX YEARS OLD AND THE BRAKE LINE SHOULD NOT RUST THROUGH THAT QUICKLY. THIS IS A DANGEROUS CONDITION AS ALL OF THE BRAKE FLUID IS PUMPED OUT OF THE MASTER CYLINDER AND YOU THEN LOSE ALL BRAKING ON THE VEHICLE. *TR
NHTSA ODI #10230577
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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