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2001 GMC Sierra 2500

Owner reports · Recalls · Investigations

More warning signs than most Sierra 2500 years

Owner complaints for the 2001 GMC Sierra 2500 are substantially higher than the model-year median of 46.

About this comparison →

When problems were reported

Mileage at the reported incident

111 reports with mileage · 23 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes, Hydraulic. Review the 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 21 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

11 crash reports2 fire reports6 injury reports

Tires complaints

12 reports
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163,540 miles · Mar 23, 2016
Tires

HAVING HEARD ABOUT MICHELIN RECALLS I CHECKED THE TIRES ON MY 2001 GMC SIERRA PICKUP. I HAVE MICHELIN LT245/75R16 120/116R XC LT4 TIRES WITH LESS THAN 20,000 MILES WEAR. TWO OF THEM ARE "CRUMBLING" OUT 1 1/2 INCH ABOVE THE RIM. YOU CAN SEE FIBERS IN THE HOLES. THERE ARE CRACKS EVERYWHERE ON ALL THE TIRES. THEY HAVE BEEN CO…

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HAVING HEARD ABOUT MICHELIN RECALLS I CHECKED THE TIRES ON MY 2001 GMC SIERRA PICKUP. I HAVE MICHELIN LT245/75R16 120/116R XC LT4 TIRES WITH LESS THAN 20,000 MILES WEAR. TWO OF THEM ARE "CRUMBLING" OUT 1 1/2 INCH ABOVE THE RIM. YOU CAN SEE FIBERS IN THE HOLES. THERE ARE CRACKS EVERYWHERE ON ALL THE TIRES. THEY HAVE BEEN COVERED FROM THE SUN. GRANTED THE TIRES HAVE AGE BUT I HAVE NEVER SEEN "CRUMBLING" BEFORE.

NHTSA ODI #10851257

Mileage unknown · Apr 5, 2012
Tires

TL* THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD PICKUP TRUCK. THE VEHICLE WAS EQUIPPED WITH COOPER DISCOVERER ATR TIRES, TIRE SIZE 245/75/16. THE DOT NUMBER WAS 3DCBD0406. WHILE PARKED, THE CONTACT NOTICED SEVERE TREAD AND OUTER SIDEWALL SEPARATION ON ALL FOUR TIRES, WHICH OCCURRED PREMATURELY. THE WIRE BELTS WERE VISIBLE IN THE …

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TL* THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD PICKUP TRUCK. THE VEHICLE WAS EQUIPPED WITH COOPER DISCOVERER ATR TIRES, TIRE SIZE 245/75/16. THE DOT NUMBER WAS 3DCBD0406. WHILE PARKED, THE CONTACT NOTICED SEVERE TREAD AND OUTER SIDEWALL SEPARATION ON ALL FOUR TIRES, WHICH OCCURRED PREMATURELY. THE WIRE BELTS WERE VISIBLE IN THE FOUR TIRES. THE TIRES HAD NOT BEEN REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. UPDATED 5/7/12 *CN THE CONSUMER STATED ONE OF THE TIRES STEEL BELTS WERE SHOWING AND THE OTHER TIRES HAD RUBBER COMING OUT OF THEM/ ALL THREE TIRES WERE REPLACED.

NHTSA ODI #10454252

239,000 miles · Oct 20, 2011
Tires

TL* THE CONTACT OWNS A 2001 GMC 2500 HD TRUCK EQUIPPED WITH BCT HI-RUN TIRES, TIRE SIZE 275/245/75/16/ (N/A), DOT NUMBER: UNKNOWN. THE CONTACT WAS DRIVING 60 MPH WHEN THE VEHICLE EXHIBITED A LOUD NOISE. THE CONTACT MOVED THE VEHICLE FROM THE ROADWAY AND UPON FURTHER INSPECTION, FOUND THAT THE REAR DRIVER SIDE TIRE WAS BLOWN. THE…

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TL* THE CONTACT OWNS A 2001 GMC 2500 HD TRUCK EQUIPPED WITH BCT HI-RUN TIRES, TIRE SIZE 275/245/75/16/ (N/A), DOT NUMBER: UNKNOWN. THE CONTACT WAS DRIVING 60 MPH WHEN THE VEHICLE EXHIBITED A LOUD NOISE. THE CONTACT MOVED THE VEHICLE FROM THE ROADWAY AND UPON FURTHER INSPECTION, FOUND THAT THE REAR DRIVER SIDE TIRE WAS BLOWN. THE CONTACT STATED THAT HE HAD EXPERIENCED FOUR TIRE BLOW OUTS WHEN THE SAME BRAND OF TIRE ON FOUR SEPARATE VEHICLES. THE VEHICLE WAS TAKEN TO THE MECHANIC, BUT THE MANUFACTURER WAS NOT CONTACTED. THE TIRE WAS REPLACED WITH A SPARE BY THE CONTACT. THE FAILURE MILEAGE FOR THE TIRE WAS 12,000. THE FAILURE MILEAGE OF THE VEHICLE WAS 239,000 AND THE CURRENT MILEAGE WAS 242,000.

NHTSA ODI #10430915

31,000 miles · Jun 10, 2008
Tires

TRAVELING DOWN INTERSTATE 40 LEFT REAR TIRE SEPARATED AND TURNED VEHICLE SIDEWAYS. I WAS ABLE TO REGAIN CONTROL OF VEHICLE WITHOUT CRASHING. I HAVE VEHICLE DAMAGE TO THE LEFT REAR AND LEFT FRONT OF TOWED VEHICLE. THERE WERE NO INJURIES. *TR

NHTSA ODI #10230485

101,476 miles · Aug 22, 2007
Tires

TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD. THE VEHICLE HAS COOPER TIRES, SIZE LT26575-16. WHILE DRIVING 70 MPH, THE VEHICLE BEGAN TO SHAKE AND PIECES OF THE INNER BELT OF THE TIRE BEGAN TO SEPARATE. THE FENDER FLARE AND THE MUD FLAP ALSO DETACHED FROM THE VEHICLE. A SPARE TIRE WAS PLACED ON THE VEHICLE AND IT WAS TAKEN T…

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TL*THE CONTACT OWNS A 2001 GMC SIERRA 2500 HD. THE VEHICLE HAS COOPER TIRES, SIZE LT26575-16. WHILE DRIVING 70 MPH, THE VEHICLE BEGAN TO SHAKE AND PIECES OF THE INNER BELT OF THE TIRE BEGAN TO SEPARATE. THE FENDER FLARE AND THE MUD FLAP ALSO DETACHED FROM THE VEHICLE. A SPARE TIRE WAS PLACED ON THE VEHICLE AND IT WAS TAKEN TO THE DEALER. THE CURRENT AND FAILURE MILEAGES WERE 101,476.

NHTSA ODI #10200460

47,300 miles · Apr 20, 2006
Tires

WHILE TRAVELING WEST ON I-10, IN JEFFERSON COUNTY, I FELT A VIBRATION AND WAS SLOWING DOWN WHEN THE LEFT REAR TIRE FAILED. MY VEHICLE SWERVED AND I PULLED OFF THE SIDE OF THE ROAD. THE RUBBER ON THE TIRE SEPARATED AND EXPOSED THE INFLATED TIRE. THE TIRE MAINTAINED ITS AIR PRESSURE AND SOME OF THE STEEL BELT WAS VISIBLE BUT TH…

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WHILE TRAVELING WEST ON I-10, IN JEFFERSON COUNTY, I FELT A VIBRATION AND WAS SLOWING DOWN WHEN THE LEFT REAR TIRE FAILED. MY VEHICLE SWERVED AND I PULLED OFF THE SIDE OF THE ROAD. THE RUBBER ON THE TIRE SEPARATED AND EXPOSED THE INFLATED TIRE. THE TIRE MAINTAINED ITS AIR PRESSURE AND SOME OF THE STEEL BELT WAS VISIBLE BUT THE TREAD WAS MISSING. THE VEHICLE TRAVELING BEHIND ME, APPARENTLY, OVER STEERED IN AN EFFORT TO AVOID MY DISCARDED RUBBER AND DROVE OFF THE ROADWAY. EMERGENCY PERSONNEL ASSISTED THIS DRIVER. THE DISCARDED RUBBER DAMAGED THE REAR BUMPER AND TAILGATE OF MY VEHICLE. THE TIRE WAS SENT TO FIRESTONE'S COMPLAINT DEPARTMENT AT BFNT LLC ( REF # 917284) AND THEY EVALUATED IT. THEY ARE NOT CLAIMING THE TIRE WAS DEFECTIVE. MY VEHICLE IS NOT USED OFF ROAD AND THE MODEL NUMBER IS LT245/75R16, STEELTEX RADIAL R4S II. *NM

NHTSA ODI #10155768

51,000 miles · Jan 18, 2005
Tires

WHILE DRIVING AT 40 MPH, THE DRIVER SIDE REAR TIRE LOST ITS TREAD, BUT IT DID NOT GO FLAT. THE ENTIRE TREAD WAS GONE. THE CONSUMER WAS ABLE TO DRIVE ON THE TIRE. THE CONSUMER HAD ALL OF THE TIRES REPLACED. THE TIRE MANUFACTURER OFFERED NO ASSISTANCE. *JB

NHTSA ODI #10107423

Mileage unknown · Oct 18, 2004
Tires

WHILE TRAVELING ON INTERSTATE 10 IN EL PASO, TEXAS, THE LEFT REAR TIRE (MICHELIN XPS RIB 245-75R-16) ON MY PICKUP CATASTROPHICALLY FAILED, CAUSING DAMAGE TO THE TRUCK AND A POTENTIALLY DEADLY SITUATION ON THE INTERSTATE. THE TIRE IS NO LONGER AVAILABLE, BUT PICTURES OF THE FAILED CARCAS ARE. AS ALL FOUR TIRES WERE THE SAME MOD…

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WHILE TRAVELING ON INTERSTATE 10 IN EL PASO, TEXAS, THE LEFT REAR TIRE (MICHELIN XPS RIB 245-75R-16) ON MY PICKUP CATASTROPHICALLY FAILED, CAUSING DAMAGE TO THE TRUCK AND A POTENTIALLY DEADLY SITUATION ON THE INTERSTATE. THE TIRE IS NO LONGER AVAILABLE, BUT PICTURES OF THE FAILED CARCAS ARE. AS ALL FOUR TIRES WERE THE SAME MODEL AND PURCHASED AT THE SAME TIME, IT WAS NECESSARY THAT ALL FOUR BE REPLACED IN ADDITION TO BODY REPAIR TO THE TRUCK.*AK

NHTSA ODI #10095974

Mileage unknown · Apr 28, 2004
Tires

TREAD SEPARATION ON FIRESTONE STEELTEX RADIAL A/T, LT245/75/R16, DOT VN11 BAC1301. WHILE TRAVELING AT HIGHWAY SPEED ON I80, OUTER BELT APPARENTLY BROKE, CAUSING A STRIP OF TREAD 1 1/2 " WIDE X 33" LONG TO SEPARATE FROM THE TIRE. TREAD SEPARATION WAS DIAGONAL ACROSS THE TIRE FROM OUTSIDE TO IN. TIRE WAS MOUNTED ON THE LEFT REAR…

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TREAD SEPARATION ON FIRESTONE STEELTEX RADIAL A/T, LT245/75/R16, DOT VN11 BAC1301. WHILE TRAVELING AT HIGHWAY SPEED ON I80, OUTER BELT APPARENTLY BROKE, CAUSING A STRIP OF TREAD 1 1/2 " WIDE X 33" LONG TO SEPARATE FROM THE TIRE. TREAD SEPARATION WAS DIAGONAL ACROSS THE TIRE FROM OUTSIDE TO IN. TIRE WAS MOUNTED ON THE LEFT REAR OF A 2001 GMC 2500HD PICKUP TRUCK. TIRE HAD 47,600 MILES ON IT, APPROXIMATELY 30,000 ON THE REAR. TIRE DID NOT BLOW OUT OR DEFLATE, AND WAS STILL INFLATED TO 80PSI WHEN REMOVED FROM THE TRUCK. TIRE REPLACED. OLD TIRE IS AVAILABLE FOR INSPECTION.

NHTSA ODI #10068011

27,268 miles · Jun 5, 2003
TiresInjury

FIRESTONE STEELTEX R4SII TREAD SEPARATION OF TWO TIRES WITHIN FOUR DAYS .*AK

NHTSA ODI #10021124

Official recalls

2

01V220000 · Interior Lighting

Jun 26, 2001

VEHICLE DESCRIPTION: CERTAIN PICKUP TRUCKS EQUIPPED WITH 6.6L DIESEL ENGINES FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 105, "HYDRAULIC AND ELECTRIC BRAKE SYSTEMS." THESE VEHICLES HAVE A BRAKE SYSTEM WARNING LIGHT IN THE INSTRUMENT CLUSTER THAT MAY NOT ILLUMINATE WHEN THE BRAKE FLUID IS LOW. IN ADDITION, WHEN THE BRAKE FLUID IS LOW, THE VEHICLE MAY NOT MEET THE PARTIAL SYSTEM REQUIREMENTS OF FMVSS NO. 105.

Consequence & remedy

Consequence: THESE CONDITIONS COULD RESULT IN REDUCED BRAKING CAPABILITY, WHICH COULD LEAD TO A CRASH.

Remedy: DEALERS WILL CHANGE THE LOCATION OF A WIRE CONNECTION IN THE UNDERHOOD BUSSED ELECTRICAL CENTER. OWNER NOTIFICATION BEGAN JULY 9, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.

01V125000 · Equipment:other:labels

Apr 10, 2001

VEHICLE DESCRIPTION: CERTAIN 2-WHEEL DRIVE PICKUP TRUCKS FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 120, "TIRE SELECTION AND RIMS FOR MOTOR VEHICLES OTHER THAN PASSENGER CARS." THE PROBLEM WAS CAUSED BY A COMPUTER ERROR THAT RESULTED IN THE CERTIFICATION LABEL LISTING TIRE SIZE AND INFLATION PRESSURE INFORMATION THAT DIFFER FROM THE TIRE SIZE AND THE INFLATION PRESSURE INFORMATION FOR THE TIRES ON THE VEHICLE. IF THE VEHICLE OWNER OR SOMEONE SERVICING THE VEHICLE INFLATES THE TIRES ACCORDING TO THE PRESSURE SPECIFIED ON THE LABEL VERSUS THE APPROPRIATE PRESSURE FOR THE TIRES, THE TIRES COULD BE UNDER-INFLATED OR OVER-INFLATED DEPENDING ON THE TIRES MOUNTED ON THE VEHICLE.

Consequence & remedy

Consequence: IF THE TIRES ARE UNDER-INFLATED, IT COULD REDUCE THE TREAD LIFE OF THE TIRE, AND THE TIRE COULD DEGRADE TO A POINT OF ALLOWING SUDDEN AIR LOSS. IF THE TIRES ARE OVER-INFLATED, IT COULD REDUCE THE TREAD LIFE OF THE TIRE AND INCREASE SUSCEPTIBILITY TO ROAD HAZARD DAMAGE. IF SUDDEN AIR LOSS OR A ROAD HAZARD CAUSES DAMAGE TO A TIRE, CONTROL OF THE VEHICLE COULD BE ADVERSELY AFFECTED AND COULD RESULT IN A VEHICLE CRASH.

Remedy: OWNERS WILL BE PROVIDED WITH A NEW LABEL AND INSTALLATION INSTRUCTIONS. HOWEVER, A DEALER CAN INSTALL THE LABEL IF THE OWNER SO DESIRES. OWNER NOTIFICATION BEGAN MAY 31, 2001. OWNERS WHO DO NOT RECEIVE THE LABEL AND INSTALLATION INSTRUCTIONS WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.

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

2

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.

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.