IllustrationCORRODED STEEL BRAKE LINES RUSTED, CAUSED CATASTROPHIC LOSS OF BRAKING. *TR
2001 Chevrolet Silverado 2500
Owner reports · Recalls · Investigations
More warning signs than most Silverado 2500 years
Owner complaints for the 2001 Chevrolet Silverado 2500 are substantially higher than the model-year median of 81.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 2500 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
270–25K
3725–50K
5550–75K
5275–100K
53100–150K
31150K+
255 reports with mileage · 45 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 78 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 62 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 55 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 reports3 fire reports4 injury reports
What owners actually said
300 reportsCHEVY 2001 2500HD - I HAVE JUST OVER 25,000 MILES ON IT. AT 16,000 MILES I HAD TO REPLACE ALL THE ROTORS, ETC. BECAUSE OF RUST AND PITTING. THIS PAST SATURDAY, I RETURNED FROM A SHORT ERRAND AND I NOTICED SOMETHING DRIPPING FROM THE UNDERCARRIAGE IN MY DRIVEWAY. I CRAWLED UNDER AND NOTICE HOW PITTED AND CORRODED THE BRAKE LIN…
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CHEVY 2001 2500HD - I HAVE JUST OVER 25,000 MILES ON IT. AT 16,000 MILES I HAD TO REPLACE ALL THE ROTORS, ETC. BECAUSE OF RUST AND PITTING. THIS PAST SATURDAY, I RETURNED FROM A SHORT ERRAND AND I NOTICED SOMETHING DRIPPING FROM THE UNDERCARRIAGE IN MY DRIVEWAY. I CRAWLED UNDER AND NOTICE HOW PITTED AND CORRODED THE BRAKE LINES WERE. IT APPEARED THAT BRAKE FLUID WAS OOZING FROM THE LINES. LATER, I PUSHED ON THE BRAKE PEDAL TO SEE HOW BAD THE LINES WOULD BLEED AGAIN AND THE PEDAL WENT TO THE FLOOR - I COULD FEEL THE PRESSURE RELEASE - LIKE SOMETHING RUPTURED IN THE BRAKE SYSTEM. FORTUNATELY, I WAS IN MY DRIVEWAY AND NOT DRIVING AT THE TIME. *TR
THE BRAKE LINES ON MY 2001 CHEVY SILVERADO 2500 CREW CAB HAVE ALL RUSTED THROUGH BRAKE RUSHED OUT AND I WAS LEFT WITHOUT ANY BRAKES. STOPPED TRUCK WITH EMERGENCY BRAKE AND HAD IT TOWED. WHAT IF I HAD KILLED SOMEONE IS THAT WORTH THE EXTRA 40 DOLLARS FOR STAINLESS STEEL LINES. COME ON YOU ARE RESPONSIBLE FOR THE PUBLICS SAFETY. T…
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THE BRAKE LINES ON MY 2001 CHEVY SILVERADO 2500 CREW CAB HAVE ALL RUSTED THROUGH BRAKE RUSHED OUT AND I WAS LEFT WITHOUT ANY BRAKES. STOPPED TRUCK WITH EMERGENCY BRAKE AND HAD IT TOWED. WHAT IF I HAD KILLED SOMEONE IS THAT WORTH THE EXTRA 40 DOLLARS FOR STAINLESS STEEL LINES. COME ON YOU ARE RESPONSIBLE FOR THE PUBLICS SAFETY. THIS PROBLEM IS WIDESPREAD. IT'S A CRAP SHOOT EVERY TIME YOU DRIVE. *TR
THE ABS RECALL WHEN I CALLED GM THEY TOLD ME MY TRUCK WAS NOT PART OF THE RECALL BUT IT DOES THE SAME THING THE RECALL WAS FOR AT ABOUT 10 MPH WHEN BRAKING THE ABS KICKS IN WHICH MAKES IT TAKE LONGER TO STOP( I DON'T KNOW WHEN IT STARTED I AM GUESSING WITH THE DATE). *TR
THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL T…
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THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. . ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. THE DAY OF SEPTEMBER 17TH 2009 HAD TWO FAILURES. THE FIRST OCCURRED WHILE TRAVELING ALONG DIVIDED STATE ROUTE AT 65 MPH WHEN THE ENGINE SUDDENLY STALLED BUT I WAS ABLE TO PULL OUT OF TRAFFIC AND RESTART THE ENGINE AFTER THE COOL DOWN PERIOD. THERE WERE NO SES INDICATORS BEING SHOWN. THE SECOND ENGINE FAILURE OCCURRED ON MY WAY HOME. I WAS A TRAVELING ALONG STATE ROUTE 35 WHICH IS A DIVIDED HIGHWAY BUT HAS A GREAT DEAL OF TRAFFIC ON IT. THIS HIGHWAY ALSO HAS SEVERAL STOP LIGHTS IN THE AREA OF BEAVERCREEK OHIO. I HAD STOPPED AT A RED LIGHT AND WHEN I STARTED TO ACCELERATE THE ENGINE SUDDENLY DIED. TRAFFIC BEHIND ME HAD STARTED TO ACCELERATE BUT SUDDENLY HAD TO TAKE EVASIVE ACTION TO AVOID HITTING MY STALLED VEHICLE. THE GROUP OF TRAFFIC THAT WAS BEHIND ME WAS ABLE TO GET AROUND ME LEAVING ME SITTING DEAD IN THE MIDDLE OF THE HIGHWAY WITH MY 4-WAY FLASHERS ON. FURTHER TRAFFIC WAS NOT PAYING ATTENTION AND ALMOST REAR ENDED ME WHILE I WAS STALLED. I PUSHED THIS 6,700 LBS. 4X4 TRUCK OFF THE HIGHWAY MYSELF TO THE SHOULDER AND WAS NEARLY HIT A COUPLE OF TIME DURING THE PROCESS. AFTER A VERY LONG COOL DOWN PERIOD, THE ENGINE FINALLY RESTARTED. THIS TIME THERE WAS AN SES INDICATOR AND I PROCEEDED TO DRIVE TO AUTOZONE WHERE THEY SAID IT WAS THE 'CRANKSHAFT POSITION SENSOR' FAILURE. WHAT WAS DONE TO CORRECT THE FAILURE; AT THIS TIME NOTHING HAS BEEN DONE TO CORRECT THE FAILURE AND THE TRUCK IS NOT. *TR
THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIAT…
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THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. THE ONLY COMMON FACTOR THAT I HAVE BEEN ABLE TO ISOLATE IS THAT THE FAILURES HAVE ALL OCCURRED WITHIN THE FIRST TWENTY MINUTES OF DRIVING. ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. ON SEPTEMBER 10TH 2009, WHILE TRAVELING ALONG A RURAL ROAD AND APPROACHING A TRAFFIC SIGNAL THE ENGINE SUDDENLY DIES WITHOUT WARNING. I WAS ABLE TO PULL OFF THE ROAD AND THE ENGINE RESTARTED AFTER A COUPLE OF MINUTE COOL DOWN PERIOD. THERE WERE NO SERVICE ENGINE SOON (SES) INDICATORS BEING SHOWN. I THEN BEGAN TO SEARCH THE INTERNET AND FOUND THIS IS A COMMON FAILURE MODE WITH GM TRUCKS THAT HAVE THE 8.1 L ENGINE FROM THIS PERIOD AND THAT A SAFETY RECALL (07V521000) WAS DONE ON CERTAIN VIN NUMBERS TO REPLACE A DEFECTIVE OEM CRANKSHAFT POSITION SENSOR. WHAT WAS DONE TO CORRECT THE FAILURE;, AT THIS TIME NOTHING HAS BEEN DONE TO CORRECT THE FAILURE AND THE TRUCK IS NOT BEING USED. I FEEL THAT GM DOES NOT HAVE CONTAINMENT OF THIS FAILURE AND THAT ADDITIONAL VIN NUMBERS INCLUDING MINE NEED TO BE ADDED TO THE RECALL. FROM SEARCHING THE INTERNET, I HAVE FOUND SEVERAL OTHER FAILURE OCCURRENCES OUTSIDE THE CONTAINMENT RANGE. THE OLD PART IS AVAILABLE AND GM SHOULD REPLACE THE DEFECT BEFORE AN ACCIDENT DOES OCCUR CAUSING INJURY, DEATH, AND/OR LITIGATION. *TR
THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIAT…
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THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. THE ONLY COMMON FACTOR THAT I HAVE BEEN ABLE TO ISOLATE IS THAT THE FAILURES HAVE ALL OCCURRED WITHIN THE FIRST TWENTY MINUTES OF DRIVING. ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. SEPTEMBER 3RD 2009, ONCE AGAIN I WAS PULLING MY 12,000 LBS. CAMPER ALONG A STATE HIGHWAY 202 IN OHIO WHEN ONCE AGAIN THE ENGINE SUDDENLY STALLED AND I LOST ALL POWER TO THE ENGINE, POWER STEERING AND HYDRAULIC ASSISTED BRAKES. WE WERE GOING UP A HILL AND TRAFFIC BEHIND ME HAD TO SUDDENLY TAKE EVASIVE ACTION SINCE I WAS NO LONGER ACCELERATING AND WAS LOOSING SPEED AT A RAPID RATE. LUCKILY, THERE WAS JUST ENOUGH SHOULDER WIDTH THAT ALLOWED ME TO PULL OVER WITHIN 300 FEET. THE ENGINE RESTARTED AFTER A BRIEF COOL DOWN PERIOD BUT AGAIN I HAD NO IDEA AT THIS TIME WHY THE ENGINE HAD DIED. THERE WERE NO SERVICE ENGINE SOON (SES) INDICATORS BEING SHOWN. WHAT WAS DONE TO CORRECT THE FAILURE; I.E, PARTS REPAIRED OR REPLACED (AND IF OLD PART IS AVAILABLE), AT THIS TIME NOTHING HAS BEEN DONE TO CORRECT THE FAILURE AND THE TRUCK IS NOT BEING USED. I FEEL THAT GM DOES NOT HAVE CONTAINMENT OF THIS FAILURE AND THAT ADDITIONAL VIN NUMBERS INCLUDING MINE NEED TO BE ADDED TO THE RECALL. FROM SEARCHING THE INTERNET, I HAVE FOUND SEVERAL OTHER FAILURE OCCURRENCES OUTSIDE THE CONTAINMENT RANGE. THE OLD PART IS AVAILABLE AND GM SHOULD REPLACE THE DEFECT BEFORE AN ACCIDENT DOES OCCUR CAUSING INJURY, DEATH, AND/OR LITIGATION. *TR
THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIAT…
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THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. THE ONLY COMMON FACTOR THAT I HAVE BEEN ABLE TO ISOLATE IS THAT THE FAILURES HAVE ALL OCCURRED WITHIN THE FIRST TWENTY MINUTES OF DRIVING. ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. ON JULY 24TH 2009, I HAD JUST MERGED INTO MODERATELY HEAVY TRAFFIC ON I-70 PULLING A 12,000 LBS. 5TH WHEEL CAMPER AND GAINING SPEED WHEN THE ENGINE SUDDENLY WITHOUT WARNING THE ENGINE STALLED. TRAFFIC FOLLOWING ME WHICH INCLUDED SEMI TRUCKS HAD TO MOVE TO THE CENTER LANE WHILE I PULLED OVER WITHOUT POWER STEERING TO THE RIGHT SHOULDER TO SLOW DOWN. THE ENGINE RESTARTED AFTER A BRIEF COOL DOWN PERIOD BUT I HAD NO IDEA AT THIS TIME WHY THE ENGINE HAD DIED. THERE WERE NO SERVICE ENGINE SOON (SES) INDICATORS BEING SHOWN. WHAT WAS DONE TO CORRECT THE FAILURE; I.E, PARTS REPAIRED OR REPLACED (AND IF OLD PART IS AVAILABLE), AT THIS TIME NOTHING HAS BEEN DONE TO CORRECT THE FAILURE AND THE TRUCK IS NOT BEING USED. I FEEL THAT GM DOES NOT HAVE CONTAINMENT OF THIS FAILURE AND THAT ADDITIONAL VIN NUMBERS INCLUDING MINE NEED TO BE ADDED TO THE RECALL. FROM SEARCHING THE INTERNET, I HAVE FOUND SEVERAL OTHER FAILURE OCCURRENCES OUTSIDE THE CONTAINMENT RANGE. THE OLD PART IS AVAILABLE AND GM SHOULD REPLACE THE DEFECT BEFORE AN ACCIDENT DOES OCCUR CAUSING INJURY, DEATH, AND/OR LITIGATION. *TR
THE BOLT HEADS ON THE EXHAUST MANIFOLDS RUST OFF, THE MANIFOLD BECOMES LOOSE AND CAUSES A LEAK THAT COULD 1 CAUSE A FIRE OR CARBON MONOXIDE POISONING.. *TR
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STARTED THE IGNITION AND THE VEHICLE MISFIRED AND EXHIBITED EXTREMELY LOW RPMS. ON SEPARATE OCCASIONS, THE ENGINE STALLED AND HESITATED. THE FAILURES OCCURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THEY STATED THAT THE CRANKSHAFT P…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STARTED THE IGNITION AND THE VEHICLE MISFIRED AND EXHIBITED EXTREMELY LOW RPMS. ON SEPARATE OCCASIONS, THE ENGINE STALLED AND HESITATED. THE FAILURES OCCURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THEY STATED THAT THE CRANKSHAFT POSITION SENSOR FAILED. THE VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 07V521000 (ENGINE AND ENGINE COOLING), ALTHOUGH THE FAILURES WERE IDENTICAL. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS 19,300 AND THE CURRENT MILEAGE IS 19,325. THE CONSUMER STATED THE CODE READ A PROBLEM WITH THE CAMSHAFT POSITION SENSOR. UPDATED 08/14/09.*JB
Official recalls
0No 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
3EA06016 · 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.