NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
134 reports30,000 miles · Aug 25, 2009
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD. THE VEHICLE WAS REPAIRED PER RECALL 05V379000 COMPONENT: SERVICE BRAKES, HYDRAULIC: ANTILOCK ON OCTOBER, 25, 2007; HOWEVER, THE FAILURE RECURRED ON AUGUST 19, 2009. WHILE DRIVING 45 MPH, HE NOTICED THAT THE ABS SYSTEM ACTIVATED WITHOUT WARNING. THE CONTACT WAS REQUIRED TO PAY $300 T…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD. THE VEHICLE WAS REPAIRED PER RECALL 05V379000 COMPONENT: SERVICE BRAKES, HYDRAULIC: ANTILOCK ON OCTOBER, 25, 2007; HOWEVER, THE FAILURE RECURRED ON AUGUST 19, 2009. WHILE DRIVING 45 MPH, HE NOTICED THAT THE ABS SYSTEM ACTIVATED WITHOUT WARNING. THE CONTACT WAS REQUIRED TO PAY $300 TO HAVE THE VEHICLE REPAIRED. REPORT 71-752849960 WAS FILED WITH THE MANUFACTURER WHO CONFIRMED THAT THEY WOULD NOT ASSIST WITH THE REPAIR BECAUSE THE VEHICLE WAS TOO OLD. THE FAILURE MILEAGE WAS 30,000 AND THE CURRENT MILEAGE WAS 45,100.
NHTSA ODI #10281696
143,056 miles · Jun 28, 2009
EquipmentSuspension
AY HIGHWAY SPEED FELT VIGOROUS VIBRATION THROUGHOUT OUT MY 2001 GMC HD 2500 4X4 AS I SLOWED DOWN IT GOT WORSE NEXT THING I HEARD WAS A LOUD CRUNCH AND BANGING AND A PUFF OF SMOKE, THE TRUCK FISH TAILED SIDE TO SIDE (DUE TO THE TIRE STILL BEING INFLATED,IT DID NOT LOSE AIR PRESSURE) AND I CORRECTED IT TO SAFELY STOP . WHAT HAD H…
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AY HIGHWAY SPEED FELT VIGOROUS VIBRATION THROUGHOUT OUT MY 2001 GMC HD 2500 4X4 AS I SLOWED DOWN IT GOT WORSE NEXT THING I HEARD WAS A LOUD CRUNCH AND BANGING AND A PUFF OF SMOKE, THE TRUCK FISH TAILED SIDE TO SIDE (DUE TO THE TIRE STILL BEING INFLATED,IT DID NOT LOSE AIR PRESSURE) AND I CORRECTED IT TO SAFELY STOP . WHAT HAD HAPPENED WAS I LOST THE TREAD OFF THE REAR DRIVERS SIDE TIRE, CAUSING SEVERE DAMAGE TO THE WHEEL WELL AND FENDER AND EXHAUST. *TR
NHTSA ODI #10275183
Mileage unknown · Apr 14, 2009
Service Brakes, Hydraulic
I TOOK MY VEHICLE IN FOR A RECALL ON THE BRAKES A WHILE AGO. NOW THE ABS AND BRAKE LIGHTS COME ON JUST ABOUT EVERY TRIP AND DISABLES MY ABS SYSTEM. *TR
NHTSA ODI #10265212
25,259 miles · Apr 10, 2009
Service Brakes, Hydraulic
I USE MY TRUCK TO PULL A 5TH WHEEL CAMPER. WHEN I STARTED TO CHECK IT OUT THIS YEAR, I NOTICED A FUNNY SHIFT PATTERN AND A GROWL WITH TEMPORARY BRAKE LOSS AT APPROX. 4 MI. PRE HR OR LESS. I TOOK THE TRUCK IN FOR REPAIR AND THEY SENT ME TO A GM DEALER TO HAVE THE TCM REFLASHED. THAT FIXED THE SHIFT HARSHNESS. AFTER LEAVING DEALER…
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I USE MY TRUCK TO PULL A 5TH WHEEL CAMPER. WHEN I STARTED TO CHECK IT OUT THIS YEAR, I NOTICED A FUNNY SHIFT PATTERN AND A GROWL WITH TEMPORARY BRAKE LOSS AT APPROX. 4 MI. PRE HR OR LESS. I TOOK THE TRUCK IN FOR REPAIR AND THEY SENT ME TO A GM DEALER TO HAVE THE TCM REFLASHED. THAT FIXED THE SHIFT HARSHNESS. AFTER LEAVING DEALERSHIP I NOTICED THE GROWLING AGAIN. IT IS NOT EVERY TIME I APPLY THE BRAKES, BUT I AM AFRAID THAT I WILL END UP LOOSING THE BRAKES LONG ENOUGH TO HIT ANOTHER VEHICLE. AFTER DOING EXTENSIVE INTERNET STUDIES I FOUND THAT THIS VEHICLE SHOULD BE INCLUDED IN A RECALL THAT IS FOR THE EXACT SAME SYMPTOMS. I CALLED 2 DEALERSHIPS BUT WAS TOLD THAT MY VIN WAS NOT PART OF THE RECALL. I WAS TOLD THAT THEY WERE RECALLED BECAUSE OF DEFECTIVE PARTS USED ONLY ON SPECIFIC VIN NUMBERED VEHICLES. I ASKED THAT IF THIS IS TRUE THEN WHY IS MY PART FAILING IN THE EXACT SAME MANNER IF IT IS NOT DEFECTIVE. I WAS TOLD BY THE SERVICE TECH. THAT THIS WAS A GOOD QUESTION AND HE WOULD CALL GM TO SEE IF MY TRUCK QUALIFIED. APPARENTLY NOT OR I WOULDN'T BE FILING THIS. MY RESEARCH ALSO SHOWED ANOTHER COMPLAINT EXACTLY THE SAME AS MINE ON THIS SITE (NOVEMBER 10, 2006 ODI ID NUMBER : 10173313). PLEASE LET ME KNOW WHAT TO DO FROM HERE. *TR
NHTSA ODI #10264900
172,000 miles · Apr 3, 2009
Fuel System, Gasoline
TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD. WHILE DRIVING LESS THAN 65 MPH, THE VEHICLE STALLED BETWEEN 20-30 MPH. THE VEHICLE PROCEEDED TO JERK VIOLENTLY AND PERFORM AS IF IT WANTED TO STALL. THE DEALER STATED THAT ALL EIGHT FUEL INJECTORS NEEDED TO BE REPLACED AT THE ESTIMATED COST OF $350 PER FUEL INJECTOR. THIS DID NO…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD. WHILE DRIVING LESS THAN 65 MPH, THE VEHICLE STALLED BETWEEN 20-30 MPH. THE VEHICLE PROCEEDED TO JERK VIOLENTLY AND PERFORM AS IF IT WANTED TO STALL. THE DEALER STATED THAT ALL EIGHT FUEL INJECTORS NEEDED TO BE REPLACED AT THE ESTIMATED COST OF $350 PER FUEL INJECTOR. THIS DID NOT INCLUDE THE LABOR COST. THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER 06E043000. THE CONTACT WAS CONCERNED WITH THE SAFETY OF THE VEHICLE STALLING IN HEAVY TRAFFIC, WHICH COULD POTENTIALLY LEAD TO A CRASH. THE CURRENT AND FAILURE MILEAGES WERE LESS THAN 172,000.
NHTSA ODI #10264075
84,000 miles · Dec 6, 2008
Engine And Engine Cooling
CRANK SENSOR FAILURE, WITH VEHICLE STALLING AND NOT RE-STARTING UNTIL ENGINE COOLS DOWN. ALSO CRANK SENSOR WAS REPLACED AT APPROX. 60,000 MILES. SAME PROBLEM RE-OCCURRING WITH VEHICLE NOW AT 84,000 MILES. *TR
NHTSA ODI #10250932
81,000 miles · Nov 12, 2008
Engine And Engine Cooling
I HAVE A TRUCK THAT HAS THE SAME ISSUE AS THE RECALL IN THIS RECALL NUMBER 07V521000 YET GMC DOES NOT CLAIM IT IN THE RECALL. THE ISSUE IS THAT THE RECALL IS FOR A STALLED ENGINE THAT I HAVE EXPERIENCED MANY TIMES. WHY WOULDN'T GMC COVER ALL THE VEHICLES INVOLVED. THE ENGINE HAS STALLED A NUMBER OF TIMES AT HIGH SPEEDS. I AM ABL…
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I HAVE A TRUCK THAT HAS THE SAME ISSUE AS THE RECALL IN THIS RECALL NUMBER 07V521000 YET GMC DOES NOT CLAIM IT IN THE RECALL. THE ISSUE IS THAT THE RECALL IS FOR A STALLED ENGINE THAT I HAVE EXPERIENCED MANY TIMES. WHY WOULDN'T GMC COVER ALL THE VEHICLES INVOLVED. THE ENGINE HAS STALLED A NUMBER OF TIMES AT HIGH SPEEDS. I AM ABLE TO CONTROL THE VEHICLE , BUT WHEN IT HAPPENS TO MY WIFE THE BEST SHE CAN DO IS COAST TO A STOP. THIS IS CITY DRIVING SO THE FAILURE IS AN ACCIDENT WAITING TO HAPPEN. *TR
NHTSA ODI #10248549
165,000 miles · Oct 22, 2008
Exterior Lighting
I HAVE HAD TWO GM TRUCKS THAT HAVE HAD AN ISSUE WITH THE LOW BEAM HEAD LIGHTS NOT FUNCTIONING. IN BOTH CASES IT HAS BEEN THE MULTIFUNCTION SWITCH ON THE STEERING COLUMN. THE CHEVY C2500 HAPPENED ABOUT 18 MONTHS AGO. THE 2001 YUKON HAPPENED RECENTLY. *TR
NHTSA ODI #10246409
43,000 miles · Oct 3, 2008
Parking Brake
TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500. THE CONTACT WENT TO A MECHANIC INQUIRING ABOUT THE BACKING PLATE LOCATED NEAR THE EMERGENCY BRAKE. THE MECHANIC INFORMED HIM THAT THE BACKING PLATES OFTEN DISINTEGRATED. THE CONTACT BELIEVED THAT IT WAS MADE OUT OF AN INFERIOR METAL AND SHOULD NOT HAVE FAILED AT SUCH A RATE. THE EM…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500. THE CONTACT WENT TO A MECHANIC INQUIRING ABOUT THE BACKING PLATE LOCATED NEAR THE EMERGENCY BRAKE. THE MECHANIC INFORMED HIM THAT THE BACKING PLATES OFTEN DISINTEGRATED. THE CONTACT BELIEVED THAT IT WAS MADE OUT OF AN INFERIOR METAL AND SHOULD NOT HAVE FAILED AT SUCH A RATE. THE EMERGENCY BRAKE WAS NOT WORKING IN HIS VEHICLE BECAUSE IT WAS RUSTED, WHICH THE CONTACT ATTRIBUTED TO THE DEFECTIVE BACKING PLATE. THE DEALER STATED THAT THEY HAD NO ISSUES WITH THE BACKING PLATES AND THERE WERE NO RECALLS FOR THIS ISSUE. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 43,000.
NHTSA ODI #10244298
130,000 miles · Sep 3, 2008
Engine And Engine Cooling
I HAVE A 2001 GMC SIERRA 2500HD WITH AN 8.1 LITER V8 GASOLINE ENGINE. WHILE I WAS DOING SOME RESEARCH ON THE INTERNET TRYING TO DIAGNOSE WHAT COULD BE WRONG WITH IT, I STUMBLED ACROSS YOUR WEBSITE STATING THAT THERE HAD BEEN A RECALL ON THAT TRUCK WITH THAT ENGINE. NHTSA CAMPAIGN ID NUMBER : 07V521000. THIS RECALL INFORMATION…
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I HAVE A 2001 GMC SIERRA 2500HD WITH AN 8.1 LITER V8 GASOLINE ENGINE. WHILE I WAS DOING SOME RESEARCH ON THE INTERNET TRYING TO DIAGNOSE WHAT COULD BE WRONG WITH IT, I STUMBLED ACROSS YOUR WEBSITE STATING THAT THERE HAD BEEN A RECALL ON THAT TRUCK WITH THAT ENGINE. NHTSA CAMPAIGN ID NUMBER : 07V521000. THIS RECALL INFORMATION DESCRIBES EXACTLY WHAT HAS BEEN HAPPENING WITH MY VEHICLE AND THAT PART IS ONE I WAS DOING RESEARCH ON BASED UPON A MECHANIC FRIENDS ADVICE. I WAS EXCITED TO HEAR THAT THERE WAS A RECALL AS I CANNOT AFFORD TO HAVE THE PART PUT ON PROFESSIONALLY AND AM NOT KNOWLEDGEABLE TO DO IT MYSELF. THIS DEFECT REALLY IS A SAFETY ISSUE. OVER THE PAST COUPLE OF WEEKS THE TRUCK HAS GONE DEAD AND I HAVE BEEN STUCK IN AN INTERSECTION AND ALSO HAD TO PULL OVER SEVERAL TIMES WHILE THE VEHICLE WAS NOT RUNNING AND NOT STEERING EASILY OR STOPPING EASILY. SO I CALLED A TOLL FREE NUMBER THAT I GOT FOR GMC AND THEY TELL ME THAT MY TRUCK IS NOT COVERED EVEN THOUGH IT IS CLEARLY DOING THE SAME THING THAT THE RECALL DEFINES. MY VIN# IS . I HOPE THAT THERE IS SOMETHING THAT YOUR ORGANIZATION CAN DO TO EXTEND THE RECALL TO AFFECT MY VEHICLE OR LET GMC KNOW THAT IT ALREADY DOES. THANK YOU VERY MUCH AND DO NOT HESITATE TO CALL ME IF YOU NEED ANY FURTHER INFORMATION. *TR
NHTSA ODI #10240817
NHTSA investigations
2EA06016 · 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.
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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