SEVERE CORROSION OF THE BRAKE LINES LEADING FROM THE ABS UNIT TO ALL FOUR WHEELS RESULTED COMPLETE FAILURE OF THE BRAKES. THE LEFT REAR BRAKE LINE DEVELOPED A RUPTURE ROUGHLY 2 INCHES LONG ABOVE THE FUEL TANK THAT MADE IT IMPOSSIBLE TO DEVELOP ANY BRAKE SYSTEM PRESSURE. THE FAILED LINE WAS REPLACED BY A LOCAL CHEVROLET DEALERS…
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SEVERE CORROSION OF THE BRAKE LINES LEADING FROM THE ABS UNIT TO ALL FOUR WHEELS RESULTED COMPLETE FAILURE OF THE BRAKES. THE LEFT REAR BRAKE LINE DEVELOPED A RUPTURE ROUGHLY 2 INCHES LONG ABOVE THE FUEL TANK THAT MADE IT IMPOSSIBLE TO DEVELOP ANY BRAKE SYSTEM PRESSURE. THE FAILED LINE WAS REPLACED BY A LOCAL CHEVROLET DEALERSHIP AND THE REST OF THE BRAKE LINES WERE "INSPECTED." THE RIGHT FRONT BRAKE LINE RUPTURED WHERE IT PASSES AROUND THE LEFT FRONT WHEEL WELL, ROUGHLY 2 MONTHS LATER AGAIN DUE TO SEVERE CORROSION, AND AGAIN RESULTING IN COMPLETE BRAKE SYSTEM PRESSURE LOSS. THIS LINE WAS COMPLETELY DETERIORATED AS WELL AND SHOULD HAVE BEEN REPLACED AT THE TIME OF THE FIRST FAILURE. THE SIZE OF THE RUPTURES IN BOTH CASES MADE IT IMPOSSIBLE TO DEVELOP AND SUPPLY ANY BRAKE SYSTEM PRESSURE TO THE 3 REMAINING WHEELS. IN BOTH CASES, THE FAILURE OCCURED WHEN THE TRUCK WAS MOVING AT UNDER 10 MPH AND APPROACHING A STOP SIGN. THE FIRST TIME I STOPPED THE VEHICLE BY RUNNING INTO THE DITCH, AND THE SECOND TIME I STOPPED IT BY STOMPING ON THE E-BRAKE AND SKIDDING TO A STOP. HAD THE FAILURE OCCURED ON THE HIGHWAY, IT WOULD HAVE RESULTED IN AN ACCIDENT INVOLVING A HEAVY TRUCK. THIS IS A TRUCK WITH A +9,000 LB GROSS VEHICLE WEIGHT AND +10,000 LB MAX TRAILER WEIGHT RATING. IT SOUNDS LIKE THIS IS A FREQUENT PROBLEM WITH GM TRUCKS AND SUVS FROM THIS TIME PERIOD. IT IS ALSO IMPORTANT TO NOTE THAT THE TRUCK WAS LOCATED IN SOUTH CAROLINA FROM 2002 UNTIL 2007 AND WAS ONLY IN THE NORTHEAST FOR FIVE WINTER SEASONS OR APPROX. 65,000 MILES. THE TRUCK HAS NO COSMETIC BODY RUST AND NO SIGNIFICANT RUST ON THE FRAME OR UNDERCARRIAGE. THIS WAS A PREMATURE FAILURE RESULTING IN A VERY DANGEROUS CONDITION. I HAVE ALREADY REPLACED MY REMAINING LINES, BUT THIS IS WAY MORE WORTHY OF A RECALL THEN A RUSTED TAILGATE SUPPORT CABLE. *TR
NHTSA ODI #10490964
Mileage unknown · Dec 28, 2012
Service Brakes
BRAKE LINE CORRODED AND BLEW UNDER DRIVER SIDE LEAKING ALL FLUID OUT AND NO BRAKES. WASNT DRIVING FAST LUCKILY AND NO ACCIDENT. *TR
NHTSA ODI #10490396
174,000 miles · Nov 8, 2012
Service Brakes
BRAKE LINES FROM ENGINE TO ABS CORRODED AND BURST CAUSING LOSS OF BRAKES. *TR
NHTSA ODI #10483760
49,000 miles · Oct 26, 2012
Service Brakes
THE ABS SYSTEM ENGAGES AT LOW SPEEDS CAUSING A PULSATION IN THE BRAKE PEDAL. I HAD THE WHEEL SPEED SENSORS REPLACED AT DEALERSHIP AND IT SOLVED THE PROBLEM. I DID FIND A RECALL FOR THIS ITEM BUT THEY SAID IT DOESN'T AFFECT MY VIN #. A FEW MONTHS LATER I HAD A BRAKE LINE BREAK WHILE COMING HOME. TOOK IT TO CHEVY DEALERSHIP AN…
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THE ABS SYSTEM ENGAGES AT LOW SPEEDS CAUSING A PULSATION IN THE BRAKE PEDAL. I HAD THE WHEEL SPEED SENSORS REPLACED AT DEALERSHIP AND IT SOLVED THE PROBLEM. I DID FIND A RECALL FOR THIS ITEM BUT THEY SAID IT DOESN'T AFFECT MY VIN #. A FEW MONTHS LATER I HAD A BRAKE LINE BREAK WHILE COMING HOME. TOOK IT TO CHEVY DEALERSHIP AND THEY SAID ALL THE LINES NEEDED REPLACED, BECAUSE THEY WERE SEVERELY RUSTED. *TR
NHTSA ODI #10482295
98,016 miles · Oct 14, 2012
Service Brakes
ALL OF THE STEEL BRAKE LINES ON MY CHEVY SILVERADO 2500 HD HAVE SEVERELY CORRODED AND ARE IN NEED OF REPLACEMENT. THE TRUCK HAS NOT BEEN USED OFF ROAD OR IN HARSH ENVIRONMENTS AND HAS BEEN REGULARLY MAINTAINED. *TR
NHTSA ODI #10480050
107,895 miles · Sep 19, 2012
EnginePower TrainService Brakes
1. BRAKE LINE (REAR) CORRODED AT PLASTIC RETAINING CLIP LOCATED APPROX HALFWAY TOWARD THE REAR AXLE, LOST BRAKING EFFECTIVENESS NO ACCIDENT 2. TRANSMISSION COOLING LINE CORRODED AT PLASTIC RETAINING CLIP, LEAKED FLUID, WAS REPAIRED WITHOUT CAUSING ANY OTHER DAMAGE WITHIN 3 WEEKS OF INCIDENT (1) ABOVE. 3. BRAKE LINE (FRONT …
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1. BRAKE LINE (REAR) CORRODED AT PLASTIC RETAINING CLIP LOCATED APPROX HALFWAY TOWARD THE REAR AXLE, LOST BRAKING EFFECTIVENESS NO ACCIDENT 2. TRANSMISSION COOLING LINE CORRODED AT PLASTIC RETAINING CLIP, LEAKED FLUID, WAS REPAIRED WITHOUT CAUSING ANY OTHER DAMAGE WITHIN 3 WEEKS OF INCIDENT (1) ABOVE. 3. BRAKE LINE (FRONT LEFT) CORRODED AT PLASTIC RETAINING CLIP CAUSING LOSS OF BRAKING EFFECTIVENESS AT 30 MPH, NO ACCIDENT, DATE OF OCCURRENCE 9/18/2012 MILEAGE 110K. *TR
NHTSA ODI #10475963
79,000 miles · Sep 5, 2012
Service Brakes
I WAS TOWING MY BOAT HOME WITH MY 2001 CHEVY SILVERADO 2500HD AND AS I APPROACHED AN INTERSECTION I APPLIED THE BRAKES AND THE BRAKE PEDAL WENT RIGHT TO THE FLOORBOARD!! THERE WAS NO WARNING OF A LOSS IN HYDRAULIC PRESSURE AND NO OTHER INDICATIONS OF AN IMMINENT BRAKE SYSTEM FAILURE. IMMEDIATELY UPON NOTICING THE BRAKE SYSTEM …
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I WAS TOWING MY BOAT HOME WITH MY 2001 CHEVY SILVERADO 2500HD AND AS I APPROACHED AN INTERSECTION I APPLIED THE BRAKES AND THE BRAKE PEDAL WENT RIGHT TO THE FLOORBOARD!! THERE WAS NO WARNING OF A LOSS IN HYDRAULIC PRESSURE AND NO OTHER INDICATIONS OF AN IMMINENT BRAKE SYSTEM FAILURE. IMMEDIATELY UPON NOTICING THE BRAKE SYSTEM FAILURE I DOWNSHIFTED THE AUTOMATIC TRANSMISSION TO HELP SLOW THE TRUCK DOWN. LUCKILY THERE WAS NO OTHER TRAFFIC AS I ROLLED THROUGH THE INTERSECTION WITH A 3,000 POUND BOAT/TRAILER LOAD I WAS TOWING. I MANAGED TO MAKE IT HOME BY ALTERING MY ROUTE TO AVOID DOWNSLOPING INTERSECTIONS AND ALSO DOWNSHIFTING THE TRANSMISSION TO SLOW DOWN AS I APPROACHED THOSE INTERSECTIONS I COULD NOT AVOID. SINCE I DID NOT HAVE A VEHICLE LIFT OR THE PROPER TOOLS/EQUIPMENT TO MAKE THE REPAIRS, I HAD THE TRUCK TOWED TO AN AUTOMOTIVE REPAIR FACILITY. THEIR DIAGNOSIS: BRAKE LINE FAILURE DUE TO SIGNIFICANT CORROSION. REPAIR BILL WAS $260 TO REPAIR/REPLACE THE CORRODED BRAKE LINE THAT SUPPLIED THE BRAKES TO THE LEFT FRONT WHEEL! THIS SAME CIRCUMSTANCE OCCURRED AGAIN ON 9/3/12 (I.E., SAME LOSS OF HYDRAULIC PRESSURE (WITHOUT WARNING) & TOTAL BRAKE SYSTEM FAILURE)! THE TRUCK IS AGAIN IN THE REPAIR SHOP AND THE MECHANIC STATED THE BRAKE LINE TO THE RIGHT FRONT WHEEL FAILED DUE TO CORROSION & HE ALSO SAID ALL THE OTHER BRAKE LINES, EXCEPT FOR THE ONE REPLACED ON 6/22/2012, ARE CORRODED "PRETTY BAD." HE ALSO STATED THAT THE DESIGN & LOCATION OF THE BRAKE SYSTEMS ON THESE CHEVROLET & GMC SILVERADO PICKUP TRUCKS IS SUCH THAT CORROSION AND BRAKE SYSTEM FAILURE IS A VERY COMMON OCCURRENCE, ESPECIALLY IN OUR REGION (UPPER MICHIGAN) WITH LONG WINTERS AND ROAD SALT. WHAT'S WORSE IS THAT KEY COMPONENTS OF THE SYSTEM (IN PARTICULAR THE ABS VALVE) ARE NOT EASILY ACCESSIBLE FOR SERVICE, MAINTENANCE OR REPAIR, WHICH ONLY ADDS TO THE COST OF REPAIR. PLEASE ISSUE A RECALL!! *TR
NHTSA ODI #10473953
200,000 miles · Sep 4, 2012
Service Brakes
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, THE BRAKES FAILED. THE CONTACT STATED THAT THE DRIVER OF THE VEHICLE DEPRESSED THE BRAKE PEDAL INTO THE FLOORBOARD HOWEVER, THE VEHICLE WOULD NOT DECELERATE. THE VEHICLE WAS TAKEN TO A DEALER FOR INSPECTION WHERE THEY STATED TH…
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE DRIVING 35 MPH, THE BRAKES FAILED. THE CONTACT STATED THAT THE DRIVER OF THE VEHICLE DEPRESSED THE BRAKE PEDAL INTO THE FLOORBOARD HOWEVER, THE VEHICLE WOULD NOT DECELERATE. THE VEHICLE WAS TAKEN TO A DEALER FOR INSPECTION WHERE THEY STATED THAT THE BRAKE LINES WERE RUSTED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 200,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10473829
62,761 miles · Aug 25, 2012
Service Brakes
BRAKE LINE FAILURE DUE TO CORROSION (RUST). BRAKE LINE TO REAR WHEELS SPRUNG LEAK AND STOPPING WAS DIFFICULT. HAD THIS BEEN AT HIGHER SPEED, COULD HAVE FATALITY. THE MATERIAL THE BRAKE LINES ARE MADE OF SHOULD NOT BE USED TO MAKE BRAKE LINES. CHECKED BRAKE LINES AND THEY ARE ALL HEAVILY CORRODED. ALL WILL HAVE TO BE REPLAC…
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BRAKE LINE FAILURE DUE TO CORROSION (RUST). BRAKE LINE TO REAR WHEELS SPRUNG LEAK AND STOPPING WAS DIFFICULT. HAD THIS BEEN AT HIGHER SPEED, COULD HAVE FATALITY. THE MATERIAL THE BRAKE LINES ARE MADE OF SHOULD NOT BE USED TO MAKE BRAKE LINES. CHECKED BRAKE LINES AND THEY ARE ALL HEAVILY CORRODED. ALL WILL HAVE TO BE REPLACED. SIMILARLY THE FUEL LINE IS HEAVILY CORRODED BETWEEN TANK AND ENGINE. IT IS APPARENT THAT SAVING A FEW PENNIES ON COST OF BRAKE LINES ALLOY, IS MORE IMPORTANT TO GM THAN THE LIVES OF THE OCCUPANTS OF THE VEHICLES. *TR
NHTSA ODI #10472470
58,922 miles · Jul 31, 2012
Service Brakes
I WAS BACKING OUT OF MY DRIVEWAY WHEN THE BRAKE PEDAL WENT TO THE FLOOR. UPON INSPECTION FOUND BRAKE LINES RUSTED AND BRAKE FLUID LEAKING. *TR
NHTSA ODI #10468489
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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