I OWN A 2001 2500HD CHEVY SILVERADO AND LAST MONTH I HAD THE LEFT REAR STEEL BRAKE LINE RUPTURE AND AS A RESULT I LOST ALL BRAKING POWER. NEITHER THE BRAKE LIGHT COME ON AND THE PROPORTIONING VALVE DID NOT FUNCTION CORRECTLY DURING THIS MALFUNCTION SINCE FRONT BRAKES LOST ALL POWER. I WAS VERY FORTUNATE THAT THE ROAD WAS CLEAR…
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I OWN A 2001 2500HD CHEVY SILVERADO AND LAST MONTH I HAD THE LEFT REAR STEEL BRAKE LINE RUPTURE AND AS A RESULT I LOST ALL BRAKING POWER. NEITHER THE BRAKE LIGHT COME ON AND THE PROPORTIONING VALVE DID NOT FUNCTION CORRECTLY DURING THIS MALFUNCTION SINCE FRONT BRAKES LOST ALL POWER. I WAS VERY FORTUNATE THAT THE ROAD WAS CLEAR, TRAFFIC WAS LIGHT AND THERE WERE NO PEDESTRIANS AROUND. THE PARKING BRAKE WORKED MARGINALLY SINCE I WAS CARRYING A LOAD OF WET SOIL HOME. I TRULY BELIEVE THIS IS A VERY SERIOUS DEFEAT WITH THIS GM TRUCK. THE VERY NEXT DAY I HAD THAT REAR LEFT BRAKE LINE REPLACED AND THE GARAGE TECHNICIAN SAID ALL THE REMAINING BRAKE LINES ARE IN A SIMILAR STATE. THANK YOU, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).'*JB
NHTSA ODI #11052531
61,000 miles · Nov 15, 2016
Service Brakes
MY TRUCK ONLY HAS 61,000 MILES ON IT AND THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR ONE DAY ON MY WAY TO WORK. I CALLED THE DEALER AND THE PRICE TO FIX WAS $2,130.00 , I WATCHED A NEWS REPORT AND EVEN A SINGLE OWNER OF SIMILAR TRUCK WHO HAD IT WASHED EVERY WEEK HAD THE SAME PROBLEM. THE TRUCK SHOULD HAVE BEEN DESIGNED WITH A …
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MY TRUCK ONLY HAS 61,000 MILES ON IT AND THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR ONE DAY ON MY WAY TO WORK. I CALLED THE DEALER AND THE PRICE TO FIX WAS $2,130.00 , I WATCHED A NEWS REPORT AND EVEN A SINGLE OWNER OF SIMILAR TRUCK WHO HAD IT WASHED EVERY WEEK HAD THE SAME PROBLEM. THE TRUCK SHOULD HAVE BEEN DESIGNED WITH A GUARD PROTECTING THE BRAKES.
NHTSA ODI #10926091
111,645 miles · Sep 23, 2016
Service Brakes
MY 2001 CHEVY SILVERADO 2500HD WITH 111,000 MILES HAD A TOTAL LOSS OF BRAKING IN MY DRIVEWAY WHILE MOVING THE TRUCK FROM ONE SPOT TO ANOTHER. UPON INSPECTION OF THE TRUCK THERE WAS NO BRAKE FLUID IN THE RESERVOIR AND THE AREA UNDER THE DRIVERS SEAT WAS WET WITH BRAKE FLUID. INSPECTION OF THE BRAKE LINES FOUND SEVERE CORROSION ON…
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MY 2001 CHEVY SILVERADO 2500HD WITH 111,000 MILES HAD A TOTAL LOSS OF BRAKING IN MY DRIVEWAY WHILE MOVING THE TRUCK FROM ONE SPOT TO ANOTHER. UPON INSPECTION OF THE TRUCK THERE WAS NO BRAKE FLUID IN THE RESERVOIR AND THE AREA UNDER THE DRIVERS SEAT WAS WET WITH BRAKE FLUID. INSPECTION OF THE BRAKE LINES FOUND SEVERE CORROSION ON THE LINES. THERE WAS NO PARTIAL BRAKING EFFORT, BRAKING WENT TO ZERO. I WAS READY TO PICK UP A NEW 7600LB TRAVEL TRAILER THIS WEEK AND WE CAME CLOSE TO A TRAGEDY. LOCAL DEALER IN GETTYSBURG, PA SAID THERE WAS NO RECALL OR "SILENT RECALL".
NHTSA ODI #10909378
147,000 miles · May 16, 2016
Service BrakesSteering
WHEN SLOWING DOWN TO STOP, WHILE AT LOW SPEED, USING THE BRAKES ENGAGES THE ABS SYSTEM AND STEERING BECOMES SUDDENLY DIFFICULT.
NHTSA ODI #10865289
35,000 miles · Mar 22, 2016
Fuel/propulsion SystemService Brakes
HERE I AM 2016 AND THE THIRD TIME I HAVE TO REPLACE RUSTED CORROSIVE BRAKE LINES AND FUEL LINES. THIS TIME I ONLY PUT 3500 MILES ON THE TRUCK SINCE THE LAST TIME. THEY ARE ON THE VERGE OR BLOWING OUT, THE FIRST TWO TIMES THEY DID AND LUCKY WAS ABLE TO STOP. THE FUEL LINE IS GONE AGAIN ALSO. WHY??
NHTSA ODI #10851017
331,000 miles · Dec 19, 2015
Service BrakesSteering
WHILE DRIVING ON A RURAL COUNTRY ROAD I SOUNDLY AND WITHOUT WARNONG LOST MY POWER BRAKES AND STEERING. . STEERING WAS VERY DIFFICULT AND BRAKES WERE ALMOST NOT FUNCTIONAL. I TOOK A GREAT EFFORT TO TURN THE STEERING WHEEL AND APPLY THE BRAKES TO SAFELY STOP THE VEHICLE. IF I WAS TRAVELING IN TRAFFIC AT HIGHWAY SPEEDS I COULD NO…
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WHILE DRIVING ON A RURAL COUNTRY ROAD I SOUNDLY AND WITHOUT WARNONG LOST MY POWER BRAKES AND STEERING. . STEERING WAS VERY DIFFICULT AND BRAKES WERE ALMOST NOT FUNCTIONAL. I TOOK A GREAT EFFORT TO TURN THE STEERING WHEEL AND APPLY THE BRAKES TO SAFELY STOP THE VEHICLE. IF I WAS TRAVELING IN TRAFFIC AT HIGHWAY SPEEDS I COULD NOT CONTROL AND SAFELY STOP THE VEHICLE.. I IMMEDIATELY PARKED THE VEHICLE AND HAD IT TOWED TO A NEARBY DEALERSHIP. THE POWER STEERING PUMP WAS REPLACED. SO THE POWER STEERING PUMP MALFUNCTIONED (BROKEN SHAFT) WHILE THE VEHICLE WAS UNDERWAY.. THE POWER STEERING MALFUNCTION AFFECTED BOTH THE POWER STEERING AND BRAKES AND THERE WAS NO WARNING. I FEEL THIS IS A POOR DESIGN. MINIMALLY THERE SHOULD BE SOME SORT OF WARNING WHEN THE POWER STEERING AND OR POWER BRAKES ARE COMPROMISED. AS I UNDERSTAND IT THIS SAME ISSUE OCCURS WHEN THE SERPENTINE BELT FAILS. THE BELT WILL FAIL WHEN THE BELT TENSIONER DOES. AGAIN NO WARNING WHEN THIS OCCURS.
NHTSA ODI #10811266
59,000 miles · Oct 16, 2015
Service Brakes
TL* THE CONTACT OWNS A 2001 CHEVROLET 2500 HD. WHILE DRIVING AT APPROXIMATELY 5 MPH, THE BRAKE AND ABS WARNING INDICATORS ILLUMINATED INTERMITTENTLY. THE FAILURE OCCURRED WHENEVER THE VEHICLE WAS IN OPERATION. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MIL…
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TL* THE CONTACT OWNS A 2001 CHEVROLET 2500 HD. WHILE DRIVING AT APPROXIMATELY 5 MPH, THE BRAKE AND ABS WARNING INDICATORS ILLUMINATED INTERMITTENTLY. THE FAILURE OCCURRED WHENEVER THE VEHICLE WAS IN OPERATION. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 59,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10782977
230,000 miles · Jul 11, 2015
Service Brakes
I WAS LEAVING MY PROPERTY GOING UP THE DRIVEWAY, I PRESSED ON THE BRAKE PEDAL AND IT WENT TO THE FLOOR AND NO BRAKES AT ALL. I HAD MY WIFE PUMP THE PEDAL AND COULD SEE BRAKE FLUID SHOOTING FROM A RUSTED LINE. I'M GLAD I DIDN'T GET OUT ON THE HIGHWAY. I HAVE NEVER HEARD OF BRAKE LINES RUSTING OUT! I HAVE CARS FROM THE 60'S WITH …
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I WAS LEAVING MY PROPERTY GOING UP THE DRIVEWAY, I PRESSED ON THE BRAKE PEDAL AND IT WENT TO THE FLOOR AND NO BRAKES AT ALL. I HAD MY WIFE PUMP THE PEDAL AND COULD SEE BRAKE FLUID SHOOTING FROM A RUSTED LINE. I'M GLAD I DIDN'T GET OUT ON THE HIGHWAY. I HAVE NEVER HEARD OF BRAKE LINES RUSTING OUT! I HAVE CARS FROM THE 60'S WITH ORIGINAL LINES. PEOPLE NEED TO KNOW ABOUT THIS ISSUE BEFORE SOME ONE GETS HURT OR WORSE.
NHTSA ODI #10733415
Mileage unknown · Jun 8, 2015
Service Brakes
I WAS DRIVING MY 2001 CHEVY 2500HD AND COMING INTO TRAFFIC THE TRUCK SLOWED DOWN AND THE BRAKE PEDAL WENT TO THE FLOOR. I WAS ABLE TO CHANGE LANES JUST IN TIME TO AVOID AN ACCIDENT. I PULL OVER TO THE SIDE OF THE ROAD AND SURE ENOUGH BRAKE FLUID LEAKING FROM THE RUSTY GM BRAKE HARD LINES. LEAKING AT THE MOST COMMON PLACE BY T…
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I WAS DRIVING MY 2001 CHEVY 2500HD AND COMING INTO TRAFFIC THE TRUCK SLOWED DOWN AND THE BRAKE PEDAL WENT TO THE FLOOR. I WAS ABLE TO CHANGE LANES JUST IN TIME TO AVOID AN ACCIDENT. I PULL OVER TO THE SIDE OF THE ROAD AND SURE ENOUGH BRAKE FLUID LEAKING FROM THE RUSTY GM BRAKE HARD LINES. LEAKING AT THE MOST COMMON PLACE BY THE ABS PUMP WHICH IS ON THE DRIVER SIDE BEHIND THE FRONT WHEEL. I WAS ABLE TO DRIVE THE TRUCK HOME WITH USING ONLY THE FRONT BRAKES AND WILL BE REPLACING THE HARD LINES WITH STAINLESS LINES. CALLED THE LOCAL DEALER AND WAS QUOTED $1,500-$2,000....EVERYONE SHOULD SEND THE RUSTY LINES TO GM SO THEY CAN DO SOMETHING ABOUT IT.
NHTSA ODI #10723959
96,000 miles · May 28, 2015
Service BrakesSteering
THE VEHICLE STALLED WHILE DRIVING DOWN A RAMP TO HIGHWAY 41. POWER BRAKES AND STEERING DID NOT WORK AS THE ENGINE WAS DEAD. THE VEHICLE HAD TO BE CRANKED REPEATEDLY TO GET IT TO RESTART. THIS WAS THE FIRST INCIDENT THAT I REMEMBER, BUT IT HAPPENED AGAIN MANY TIMES OVER THE YEARS WITHOUT WARNING. FINALLY THIS YEAR AFTER SOME RESE…
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THE VEHICLE STALLED WHILE DRIVING DOWN A RAMP TO HIGHWAY 41. POWER BRAKES AND STEERING DID NOT WORK AS THE ENGINE WAS DEAD. THE VEHICLE HAD TO BE CRANKED REPEATEDLY TO GET IT TO RESTART. THIS WAS THE FIRST INCIDENT THAT I REMEMBER, BUT IT HAPPENED AGAIN MANY TIMES OVER THE YEARS WITHOUT WARNING. FINALLY THIS YEAR AFTER SOME RESEARCH I FOUND THAT THE PROBLEM WAS CAUSED BY A FAULTY CRANK POSITION SENSOR. I LEARNED THERE WAS A RECALL (NHTSA - EA06016) FOR THIS BUT GM SAID MY VEHICLE WAS NOT COVERED BY IT EVEN THOUGH IT WAS THE SAME PROBLEM IDENTIFIED IN THE RECALL. I HAVE READ REPORTS OF OTHERS THAT HAD THE SAME FAILURE BUT GM HAS REFUSED TO FIX SAYING THE VEHICLE WAS NOT INCLUDED IN THE RECALL. I BELIEVE THE RECALL SHOULD BE EXPANDED AS THIS IS A SERIOUS PROBLEM THAT COULD CAUSE AN ACCIDENT. THE CRANKSHAFT POSITION SENSOR WAS REPLACED AND THE PROBLEM HAS BEEN SOLVED. I HAVE THE OLD SENSOR IF NEEDED FOR TESTING.
NHTSA ODI #10721868
Official recalls
0
No recalls in this snapshot.
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
3
EA06016 · Crank Position Sensor Failure - Stall
Opened Sep 14, 2006 · Closed Nov 9, 2007
Status: closed (inferred from source dates) · Engine And Engine Cooling; Engine And Engine Cooling:engine
IN A LETTER DATED NOVEMBER 7, 2007, GENERAL MOTORS (GM) REPORTED TO THE OFFICE OF DEFECTS INVESTIGATION (ODI) THAT IT WILL CONDUCT A SAFETY RECALL (07V-521) TO REPLACE THE CRANK POSITION SENSOR (CKP) IN APPROXIMATELY 12,000 MODEL YEAR (MY) 2001 CHEVROLET SILVERADO AND GMC SIERRA VEHICLES EQUIPPED WITH 8.1 LITER ENGINES MANUFACTURED ON OR BEFORE NOVEMBER 15, 2000.ACCORDING TO GM, THE CKP CAN FAIL INTERMITTENTLY OR PERMANENTLY.A PERMANENT CKP FAILURE WOULD RESULT IN AN ENGINE STALL WITHOUT RESTART.AN INTERMITTENT CKP FAILURE COULD CAUSE THE SERVICE ENGINE SOON LIGHT TO ILLUMINATE, THE VEHICLE TO RUN ROUGH OR THE ENGINE TO STALL BUT ALLOWS RESTART.AS A REMEDY, AN IMPROVED CKP WILL BE INSTALLED IN THE SUBJECT VEHICLES.THE RECALL CAMPAIGN WILL START IN DECEMBER 2007. DURING THE PRELIMINARY EVALUATION (PE06-016), AND THIS EA INVESTIGATION, GM AND ODI INDEPENDENTLY CONDUCTED DETAILED REVIEWS OF CERTAIN FIELD DATA TO UNDERSTAND THE NATURE AND RATE OF SUBJECT VEHICLE STALLING DUE TO CKP FAILURES.GM AND ODI REVIEWED GM'S WARRANTY CLAIMS FOR THE CKP WITH THE OBJECTIVE OF ASCERTAINING AN ESTIMATE OF THOSE CLAIMS REPRESENTING AN ENGINE STALL WHILE DRIVING.THE CKP WARRANTY CLAIMS WITHOUT VERBATIM TEXT WERE THE LARGEST SEGMENT OF WARRANTY CLAIMS.USING THOSE CLAIMS, GM SURVEYED VEHICLE OWNERS TO GATHER ADDITIONAL INFORMATION TO DETERMINE IF THE CLAIM WAS ASSOCIATED WITH A STALL WHILE DRIVING EVENT.BASED ON THE SURVEY, GM ESTIMATED THAT APPROXIMATELY 49% OF ALL WARRANTY REPAIRS FOR THE CKP INVOLVED A STALL WHILE DRIVING.ODI?S REVIEW OF GM'S SURVEY DATA PRODUCED A HIGHER ESTIMATE (71%) FOR STALL WHILE DRIVING.GM FURTHER ESTIMATED THE RATE OF STALL WHILE DRIVING FOR THE SUBJECT VEHICLES OVER TIME.IT ESTIMATED STALLING WHILE DRIVING RATES OF 1.6%, 4.6% AND 8.9% AT 1, 3 AND 6 YEARS IN SERVICE RESPECTIVELY.ODI'S REVIEW OF THE GM'S SURVEY DATA FINDS HIGHER ESTIMATED STALL WHILE DRIVING RATES OF 2.2%, 6.8% AND 13% AT 1, 3 AND 6 YEARS IN SERVICE RESPECTIVELY. ODI ALSO CONDUCTED A SURVEY OF VEHICLE OWNERS USING CONSUMER COMPLAINTS REPORTED TO BOTH ODI AND GM.THE OBJECTIVE WAS TO ASCERTAIN THE POTENTIAL SAFETY CONSEQUENCES OF AN ENGINE STALL DUE TO THE ALLEGED DEFECT.WITH RESPECT TO THE ABILITY TO RESTART THE VEHICLE AFTER A STALL, 11% REPORTED IMMEDIATE RESTART, 69% REPORTED DELAYED RESTART AND 20% REPORTED NO RESTART.OVER HALF NOTED AT LEAST ONE ENGINE STALL INCIDENT AT SPEEDS IN EXCESS OF 40MPH. ABOUT ONE-THIRD NOTED THE VEHICLE WAS STRANDED EITHER PARTIALLY OR FULLY IN A LANE OF TRAFFIC AFTER THE ENGINE STALL.ALL OF THE CONSUMERS SURVEYED NOTED MULTIPLE STALLING EVENTS PRIOR TO PROPER DIAGNOSIS AND REPLACEMENT OF THE CKP.BASED ON GM'S DECISION TO CONDUCT A SAFETY RECALL, THIS INVESTIGATION IS CLOSED.
Additional source detail variants (2)
Engine And Engine Cooling:engine
IN A LETTER DATED NOVEMBER 7, 2007, GENERAL MOTORS (GM) REPORTED TO THE OFFICE OF DEFECTS INVESTIGATION (ODI) THAT IT WILL CONDUCT A SAFETY RECALL (07V-521) TO REPLACE THE CRANK POSITION SENSOR (CKP) IN APPROXIMATELY 12,000 MODEL YEAR (MY) 2001 CHEVROLET SILVERADO AND GMC SIERRA VEHICLES EQUIPPED WITH 8.1 LITER ENGINES MANUFACTURED ON OR BEFORE NOVEMBER 15, 2000.ACCORDING TO GM, THE CKP CAN FAIL INTERMITTENTLY OR PERMANENTLY.A PERMANENT CKP FAILURE WOULD RESULT IN AN ENGINE STALL WITHOUT RESTART.AN INTERMITTENT CKP FAILURE COULD CAUSE THE SERVICE ENGINE SOON LIGHT TO ILLUMINATE, THE VEHICLE TO RUN ROUGH OR THE ENGINE TO STALL BUT ALLOWS RESTART.AS A REMEDY, AN IMPROVED CKP WILL BE INSTALLED IN THE SUBJECT VEHICLES.THE RECALL CAMPAIGN WILL START IN DECEMBER 2007. DURING THE PRELIMINARY EVALUATION (PE06-016), AND THIS EA INVESTIGATION, GM AND ODI INDEPENDENTLY CONDUCTED DETAILED REVIEWS OF CERTAIN FIELD DATA TO UNDERSTAND THE NATURE AND RATE OF SUBJECT VEHICLE STALLING DUE TO CKP FAILURES.GM AND ODI REVIEWED GM'S WARRANTY CLAIMS FOR THE CKP WITH THE OBJECTIVE OF ASCERTAINING AN ESTIMATE OF THOSE CLAIMS REPRESENTING AN ENGINE STALL WHILE DRIVING.THE CKP WARRANTY CLAIMS WITHOUT VERBATIM TEXT WERE THE LARGEST SEGMENT OF WARRANTY CLAIMS.USING THOSE CLAIMS, GM SURVEYED VEHICLE OWNERS TO GATHER ADDITIONAL INFORMATION TO DETERMINE IF THE CLAIM WAS ASSOCIATED WITH A STALL WHILE DRIVING EVENT.BASED ON THE SURVEY, GM ESTIMATED THAT APPROXIMATELY 49% OF ALL WARRANTY REPAIRS FOR THE CKP INVOLVED A STALL WHILE DRIVING.ODI?S REVIEW OF GM'S SURVEY DATA PRODUCED A HIGHER ESTIMATE (71%) FOR STALL WHILE DRIVING.GM FURTHER ESTIMATED THE RATE OF STALL WHILE DRIVING FOR THE SUBJECT VEHICLES OVER TIME.IT ESTIMATED STALLING WHILE DRIVING RATES OF 1.6%, 4.6% AND 8.9% AT 1, 3 AND 6 YEARS IN SERVICE RESPECTIVELY.ODI'S REVIEW OF THE GM'S SURVEY DATA FINDS HIGHER ESTIMATED STALL WHILE DRIVING RATES OF 2.2%, 6.8% AND 13% AT 1, 3 AND 6 YEARS IN SERVICE RESPECTIVELY. ODI ALSO CONDUCTED A SURVEY OF VEHICLE OWNERS USING CONSUMER COMPLAINTS REPORTED TO BOTH ODI AND GM.THE OBJECTIVE WAS TO ASCERTAIN THE POTENTIAL SAFETY CONSEQUENCES OF AN ENGINE STALL DUE TO THE ALLEGED DEFECT.WITH RESPECT TO THE ABILITY TO RESTART THE VEHICLE AFTER A STALL, 11% REPORTED IMMEDIATE RESTART, 69% REPORTED DELAYED RESTART AND 20% REPORTED NO RESTART.OVER HALF NOTED AT LEAST ONE ENGINE STALL INCIDENT AT SPEEDS IN EXCESS OF 40MPH. ABOUT ONE-THIRD NOTED THE VEHICLE WAS STRANDED EITHER PARTIALLY OR FULLY IN A LANE OF TRAFFIC AFTER THE ENGINE STALL.ALL OF THE CONSUMERS SURVEYED NOTED MULTIPLE STALLING EVENTS PRIOR TO PROPER DIAGNOSIS AND REPLACEMENT OF THE CKP.BASED ON GM'S DECISION TO CONDUCT A SAFETY RECALL, THIS INVESTIGATION IS CLOSED.
Engine And Engine Cooling
IN A LETTER DATED NOVEMBER 7, 2007, GENERAL MOTORS (GM) REPORTED TO THE OFFICE OF DEFECTS INVESTIGATION (ODI) THAT IT WILL CONDUCT A SAFETY RECALL (07V-521) TO REPLACE THE CRANK POSITION SENSOR (CKP) IN APPROXIMATELY 12,000 MODEL YEAR (MY) 2001 CHEVROLET SILVERADO AND GMC SIERRA VEHICLES EQUIPPED WITH 8.1 LITER ENGINES MANUFACTURED ON OR BEFORE NOVEMBER 15, 2000.ACCORDING TO GM, THE CKP CAN FAIL INTERMITTENTLY OR PERMANENTLY.A PERMANENT CKP FAILURE WOULD RESULT IN AN ENGINE STALL WITHOUT RESTART.AN INTERMITTENT CKP FAILURE COULD CAUSE THE SERVICE ENGINE SOON LIGHT TO ILLUMINATE, THE VEHICLE TO RUN ROUGH OR THE ENGINE TO STALL BUT ALLOWS RESTART.AS A REMEDY, AN IMPROVED CKP WILL BE INSTALLED IN THE SUBJECT VEHICLES.THE RECALL CAMPAIGN WILL START IN DECEMBER 2007. DURING THE PRELIMINARY EVALUATION (PE06-016), AND THIS EA INVESTIGATION, GM AND ODI INDEPENDENTLY CONDUCTED DETAILED REVIEWS OF CERTAIN FIELD DATA TO UNDERSTAND THE NATURE AND RATE OF SUBJECT VEHICLE STALLING DUE TO CKP FAILURES.GM AND ODI REVIEWED GM'S WARRANTY CLAIMS FOR THE CKP WITH THE OBJECTIVE OF ASCERTAINING AN ESTIMATE OF THOSE CLAIMS REPRESENTING AN ENGINE STALL WHILE DRIVING.THE CKP WARRANTY CLAIMS WITHOUT VERBATIM TEXT WERE THE LARGEST SEGMENT OF WARRANTY CLAIMS.USING THOSE CLAIMS, GM SURVEYED VEHICLE OWNERS TO GATHER ADDITIONAL INFORMATION TO DETERMINE IF THE CLAIM WAS ASSOCIATED WITH A STALL WHILE DRIVING EVENT.BASED ON THE SURVEY, GM ESTIMATED THAT APPROXIMATELY 49% OF ALL WARRANTY REPAIRS FOR THE CKP INVOLVED A STALL WHILE DRIVING.ODI?S REVIEW OF GM'S SURVEY DATA PRODUCED A HIGHER ESTIMATE (71%) FOR STALL WHILE DRIVING.GM FURTHER ESTIMATED THE RATE OF STALL WHILE DRIVING FOR THE SUBJECT VEHICLES OVER TIME.IT ESTIMATED STALLING WHILE DRIVING RATES OF 1.6%, 4.6% AND 8.9% AT 1, 3 AND 6 YEARS IN SERVICE RESPECTIVELY.ODI'S REVIEW OF THE GM'S SURVEY DATA FINDS HIGHER ESTIMATED STALL WHILE DRIVING RATES OF 2.2%, 6.8% AND 13% AT 1, 3 AND 6 YEARS IN SERVICE RESPECTIVELY. ODI ALSO CONDUCTED A SURVEY OF VEHICLE OWNERS USING CONSUMER COMPLAINTS REPORTED TO BOTH ODI AND GM.THE OBJECTIVE WAS TO ASCERTAIN THE POTENTIAL SAFETY CONSEQUENCES OF AN ENGINE STALL DUE TO THE ALLEGED DEFECT.WITH RESPECT TO THE ABILITY TO RESTART THE VEHICLE AFTER A STALL, 11% REPORTED IMMEDIATE RESTART, 69% REPORTED DELAYED RESTART AND 20% REPORTED NO RESTART.OVER HALF NOTED AT LEAST ONE ENGINE STALL INCIDENT AT SPEEDS IN EXCESS OF 40MPH. ABOUT ONE-THIRD NOTED THE VEHICLE WAS STRANDED EITHER PARTIALLY OR FULLY IN A LANE OF TRAFFIC AFTER THE ENGINE STALL.ALL OF THE CONSUMERS SURVEYED NOTED MULTIPLE STALLING EVENTS PRIOR TO PROPER DIAGNOSIS AND REPLACEMENT OF THE CKP.BASED ON GM'S DECISION TO CONDUCT A SAFETY RECALL, THIS INVESTIGATION IS CLOSED.
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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