IllustrationAFTER EXPERIENCING ABS BRAKING PROBLEMS ON MY 2001 GMC TRUCK MODEL NK3, I BECAME AWARE OF GM RECALL NO. 05068, 05V379000, WHICH THE LOCAL DEALER SAYS THIS ISSUE DOES NOT INVOLVE MY VEHICLE. FOR SAFETY REASONS, I DID REPAIR THE PROBLEM. *TR
2001 GMC Sierra 3500
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra 3500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
50–25K
525–50K
850–75K
775–100K
2100–150K
3150K+
30 reports with mileage · 6 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 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
3 crash reports1 fire reports2 injury reports
What owners actually said
36 reports2001 GMC SERRIA 3500 VIN #[XXX]. VEHICLE INTERMITTANTLY STALLS AND WILL NOT RESTART FOR A WHILE. I SEE A RECALL # 07V521000 FOR THIS VEHICLE BUT GM SAYS THIS VIN IS NOT ON THE RECALL LIST. IT HAS BEEN DIAGNOSED AS A FAILED CRANKSHAFT SENSOR. IT SEEMS THE RECALL DIDN'T INCLUDE ENOUGH VINS. THIS TRUCK ONLY HAS 55K MILES ON IT. PLE…
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2001 GMC SERRIA 3500 VIN #[XXX]. VEHICLE INTERMITTANTLY STALLS AND WILL NOT RESTART FOR A WHILE. I SEE A RECALL # 07V521000 FOR THIS VEHICLE BUT GM SAYS THIS VIN IS NOT ON THE RECALL LIST. IT HAS BEEN DIAGNOSED AS A FAILED CRANKSHAFT SENSOR. IT SEEMS THE RECALL DIDN'T INCLUDE ENOUGH VINS. THIS TRUCK ONLY HAS 55K MILES ON IT. PLEASE REOPEN A FAILURE INVESTIGATION. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
TL*THE CONTACT OWNS A 2001 SIERRA 3500. THE CONTACT STATED THAT INTERMITTENTLY THE ENGINE STALLED; HOWEVER, HE WAS ABLE TO RE-START IT IMMEDIATELY OR AFTER A COOL DOWN PERIOD. THE VEHICLE WAS TAKEN TO THE DEALER AND A TECHNICIAN REPLACED THE CRANK SHAFT POSITION SENSOR AT AN EXPENSE OF $400.59. HE THEN ADDED THAT BECAUSE THE VI…
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TL*THE CONTACT OWNS A 2001 SIERRA 3500. THE CONTACT STATED THAT INTERMITTENTLY THE ENGINE STALLED; HOWEVER, HE WAS ABLE TO RE-START IT IMMEDIATELY OR AFTER A COOL DOWN PERIOD. THE VEHICLE WAS TAKEN TO THE DEALER AND A TECHNICIAN REPLACED THE CRANK SHAFT POSITION SENSOR AT AN EXPENSE OF $400.59. HE THEN ADDED THAT BECAUSE THE VIN NUMBER WAS EXCLUDED FROM RECALL# 07V521000 (ENGINE AND ENGINE COOLING), HE WAS INELIGIBLE FOR A FREE REMEDY. THE MANUFACTURER WAS NOTIFIED, BUT NO ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS 65,500 AND THE CURRENT MILEAGE WAS 65,550. UPDATED 10/13/09 *LJ THE CONSUMER STATED WHILE GOING THROUGH HIS FILES, HE DISCOVERED THE CAM CAM SENSOR WAS REPLACED IN AUGUST 2004. AT THAT TIME, ONLY THE CHECK ENGINE LIGHT WAS ON. IT WAS REPAIRED UNDER WARRANTY. THE CRANK SENSOR WAS REPLACED IN SEPTEMBER 2009. UPDATED 10/14/09. *JB
TL*THE CONTACT OWNS A 2001 GMC SIERRA 3500 DIESEL. THE CONTACT STATED THAT THE ANTILOCK BRAKING SYSTEM WOULD ACTIVATE WHILE STOPPING FROM 50 MPH. THE VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE MECHANIC STATED THAT THE REPAIRS COULD COST SLIGHTLY LESS THAN $1,000. THE VE…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 3500 DIESEL. THE CONTACT STATED THAT THE ANTILOCK BRAKING SYSTEM WOULD ACTIVATE WHILE STOPPING FROM 50 MPH. THE VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE MECHANIC STATED THAT THE REPAIRS COULD COST SLIGHTLY LESS THAN $1,000. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE LESS THAN 175,000.
TL*THE CONTACT OWNS A 2001 GMC SIERRA 3500. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT NOTICED THAT THE SES WARNING LIGHT ILLUMINATED ON THE INSTRUMENT CONTROL PANEL. AFTERWARDS, THE VEHICLE STALLED AND TYPICALLY RESTARTS. SHE TOOK THE VEHICLE TO THE DEALER AND THEY STATED THAT HER VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN …
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 3500. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT NOTICED THAT THE SES WARNING LIGHT ILLUMINATED ON THE INSTRUMENT CONTROL PANEL. AFTERWARDS, THE VEHICLE STALLED AND TYPICALLY RESTARTS. SHE TOOK THE VEHICLE TO THE DEALER AND THEY STATED THAT HER VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER 07V521000 (ENGINE AND ENGINE COOLING), ALTHOUGH THE FAILURES WERE IDENTICAL. THE CONTACT WOULD HAVE TO PAY OVER $400 TO HAVE THE VEHICLE PROPERLY REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 52,500. UPDATED 12/30/08 . *LJ THE DEALER REPLACED A FAULTY CRANK SHAFT POSITION SENSOR. THE CONSUMER WAS INFORMED THE REPAIR WOULD NOT BE FREE OF CHARGE BECAUSE HE WAS NOT THE ORIGINAL OWNER OF THE VEHICLE AND ALSO BECAUSE OF THE AGE OF THE VEHICLE. UPDATED 01/05/09. *JB
TL*THE CONTACT OWNS A 2001 GMC SIERRA 3500. INTERMITTENTLY, WHEN THE VEHICLE IS DRIVEN AT ANY RATE OF SPEED, IT SHUTS OFF WITHOUT WARNING. THE CONTACT MUST WAIT UP TO 20 MINUTES TO RESTART THE VEHICLE. THE FUEL PUMP WAS REPLACED. THE VEHICLE WAS TAKEN TO THE DEALER AT LEAST FOUR TIMES FOR THIS FAILURE. THE FUEL FILTER WAS C…
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TL*THE CONTACT OWNS A 2001 GMC SIERRA 3500. INTERMITTENTLY, WHEN THE VEHICLE IS DRIVEN AT ANY RATE OF SPEED, IT SHUTS OFF WITHOUT WARNING. THE CONTACT MUST WAIT UP TO 20 MINUTES TO RESTART THE VEHICLE. THE FUEL PUMP WAS REPLACED. THE VEHICLE WAS TAKEN TO THE DEALER AT LEAST FOUR TIMES FOR THIS FAILURE. THE FUEL FILTER WAS CHANGED ON ONE OCCASION, BUT THE FAILURE COULD NOT BE DUPLICATED FOR THE OTHER THREE. THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER 07V521000 (ENGINE AND ENGINE COOLING). THE CURRENT MILEAGE WAS 115,000 AND FAILURE MILEAGE WAS 80,000.
TL*THE CONTACT OWNS A 2001 GMC SIERRA C3. WHEN THE VEHICLE APPROACHES A STOP, THE ABS GRAB AND MAKE IT HARDER TO STOP THE VEHICLE. THE CONTACT STATED THAT THIS FAILURE OCCURRED ONE YEAR EARLIER WHILE DRIVING AT ANY SPEED. THE EMERGENCY BRAKE ALSO FAILED, WHICH CAUSED THE VEHICLE TO FAIL INSPECTION. A LOCAL MECHANIC INFORMED …
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TL*THE CONTACT OWNS A 2001 GMC SIERRA C3. WHEN THE VEHICLE APPROACHES A STOP, THE ABS GRAB AND MAKE IT HARDER TO STOP THE VEHICLE. THE CONTACT STATED THAT THIS FAILURE OCCURRED ONE YEAR EARLIER WHILE DRIVING AT ANY SPEED. THE EMERGENCY BRAKE ALSO FAILED, WHICH CAUSED THE VEHICLE TO FAIL INSPECTION. A LOCAL MECHANIC INFORMED HIM THAT THE WHEEL SENSORS POSSIBLY NEEDED TO BE CLEANED OR REPLACED. THE MANUFACTURER STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC:ANTILOCK). THE REPAIRS WOULD COST APPROXIMATELY $1,500. THE FAILURE MILEAGE WAS 35,000 AND CURRENT MILEAGE WAS 47,000. UPDATED 06/25/08. *LJ UPDATED 06/25/08
GMC 2001 SIERRA C3 PARKING BRAKE NO LONGER FUNCTIONS AS IT SHOULD. THIS IS A SEVERE SAFETY ISSUE AS THE PEDAL GOES TO THE FLOOR AND THERE IS NO WAY TO ADJUST IT (FROM WHAT I CAN TELL). A PREVIOUS CAMPAIGN 05V161000 ALLUDED TO THIS ISSUE BUT ONLY FOR MANUAL TRANSMISSION TRUCKS. THIS IS NOT LOGICAL AS THE MECHANISM IS THE SAME. …
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GMC 2001 SIERRA C3 PARKING BRAKE NO LONGER FUNCTIONS AS IT SHOULD. THIS IS A SEVERE SAFETY ISSUE AS THE PEDAL GOES TO THE FLOOR AND THERE IS NO WAY TO ADJUST IT (FROM WHAT I CAN TELL). A PREVIOUS CAMPAIGN 05V161000 ALLUDED TO THIS ISSUE BUT ONLY FOR MANUAL TRANSMISSION TRUCKS. THIS IS NOT LOGICAL AS THE MECHANISM IS THE SAME. *TR
FRONT RIGHT ABS WHEEL SENSOR FAILED 2001 SIERRA TRUCK CAUSING SUDDEN AND UNEXPECTED PULLING TO THE RIGHT AS THE ABS SYSTEM ENGAGED AT LOW SPEED. TRUCK IS SUBJECT TO A GMC REGIONAL RECALL (RECALL ID# 58438 ) BUT GMC HAS REFUSED TO FIX PROBLEM STATING THE TRUCK WAS NOT IN THE RECALL DATABASE. TRUCK WAS SHIPPED BY DEALER TO MAS…
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FRONT RIGHT ABS WHEEL SENSOR FAILED 2001 SIERRA TRUCK CAUSING SUDDEN AND UNEXPECTED PULLING TO THE RIGHT AS THE ABS SYSTEM ENGAGED AT LOW SPEED. TRUCK IS SUBJECT TO A GMC REGIONAL RECALL (RECALL ID# 58438 ) BUT GMC HAS REFUSED TO FIX PROBLEM STATING THE TRUCK WAS NOT IN THE RECALL DATABASE. TRUCK WAS SHIPPED BY DEALER TO MASS IN 2002 WHERE IT WAS REGISTERED UNTIL SEPTEMBER 2005. *TR
INJECTOR FAILURES ON 2001 GMC DURAMAX 6.6 DIESEL ENGINE. INJECTORS FAILED AND REPLACED UNDER WARRANTY AT 167,000 MILES, FAILED AGAIN AT 197,000 MILES AND REPLACED UNDER WARRANTY. G M CUSTOMER SERVICE SAID THEY WOULD REPLACE THEM UNDER WARRANTY IF THEY FAILED AGAIN IN SUCH A SHORT PERIOD OF TIME. INJECTORS FAILED AT 234,000 MILES…
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INJECTOR FAILURES ON 2001 GMC DURAMAX 6.6 DIESEL ENGINE. INJECTORS FAILED AND REPLACED UNDER WARRANTY AT 167,000 MILES, FAILED AGAIN AT 197,000 MILES AND REPLACED UNDER WARRANTY. G M CUSTOMER SERVICE SAID THEY WOULD REPLACE THEM UNDER WARRANTY IF THEY FAILED AGAIN IN SUCH A SHORT PERIOD OF TIME. INJECTORS FAILED AT 234,000 MILES AND GM CUSTOMER SERVICE RENIGGED ON THEIR WORD. MANY OTHERS HAVE HAD FAILURES IN 30,000 TO 40,000 MILES. THEY ARE REPLACING PARTS WITH REMANUFACTURED PARTS AND THEY ARE NOT LASTING. GM DEALERS ARE CHARGING $3600.00 TO $4,500.00 TO REPLACE THESE INJECTORS OUT OF WARRANTY. IT IS PLAIN THAT THEY KNOW THAT THERE IS A PROBLEM WITH THE INJECTORS WHEN THEY EXTENDED THE WARRANTY ON INJECTORS FROM 100,000 TO 200,000 MILES OR SEVEN YEARS. THEY GET AWAY WITH THIS BECAUSE MOST PEOPLE DO NOT DRIVE THEIR VEHICLES THAT MUCH IN SEVEN YEARS. ALL I WANTED WAS A FAIR DEAL AND DID NOT GET IT. *NM
Official recalls
204V562000 · Equipment Adaptive/mobility
Nov 26, 2004
ON CERTAIN VANS EQUIPPED WITH SURE-LOK WHEELCHAIR SECUREMENT SYSTEMS, THE SPROCKET TEETH OF THE RETRACTOR ASSEMBLY IS OUT OF ALIGNMENT.
Consequence & remedy
Consequence: IN THE EVENT OF A VEHICLE CRASH, THE WHEELCHAIR MAY NOT BE ADEQUATELY SECURED POSSIBLY RESULTING IN INJURIES TO A WHEELCHAIR OCCUPANT.
Remedy: DEALERS WILL INSPECT AND REPLACE THE WHEELCHAIR SECUREMENT RETRACTORS AS NECESSARY. SURE-LOK WILL HANDLE THE REPAIRS FOR THIS CAMPAIGN. OWNERS SHOULD CONTACT SURE-LOCK AT 1-908-231-1804 OR MOBILITYWORKS AT 1-800-769-8267.
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.
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
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.