NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
300 reports129,700 miles · Apr 5, 2007
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT THE VEHICLE WASEXPERIENCING ABS FAILURE, AND FOUND RECALL # 05V379000 FOR THE SAME FAILURE. WHILE DRIVING AT ANY SPEED THE CONTACT SENSED VIBRATION IN THE BRAKE PEDAL WHEN IT WAS DEPRESSED, AND EXTENDED STOPPING DISTANCE. THE CONTACT STATED TH…
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT THE VEHICLE WASEXPERIENCING ABS FAILURE, AND FOUND RECALL # 05V379000 FOR THE SAME FAILURE. WHILE DRIVING AT ANY SPEED THE CONTACT SENSED VIBRATION IN THE BRAKE PEDAL WHEN IT WAS DEPRESSED, AND EXTENDED STOPPING DISTANCE. THE CONTACT STATED THAT THE BRAKE FLUID WAS CHECKED AND LOOKED SATISFACTORY. THE VIBRATIONS PRODUCED A RUMBLING NOISE THAT INCREASED THE HARDER THE BRAKE PEDAL WAS DEPRESSED. THE INSTRUMENT PANEL DID NOT INDICATE WHEN THE ABS ACTIVATED. THE CURRENT MILEAGE WAS 130,450, AND FAILURE MILEAGE WAS 129,700.*AK
NHTSA ODI #10187110
77,900 miles · Mar 29, 2007
Engine And Engine Cooling
STARTING EARLY MARCH 2007, MY 2001 CHEVROLET 2500HD, 8.1L TRUCK BEGAN TO STALL IN MANY AND DIFFERENT CIRCUMSTANCES. I WAS FIRST STOPPED AT A LIGHT ON A BUSINESS TRIP THEN BEGAN TO GO AND SHORTLY AFTER THE ENGINE DIED AND VARIOUS LIGHTS ILLUMINATED ON THE DASH AND SYSTEM WARNING BOX. FROM THAT POINT IT HAS CONTINUED TO STALL AT…
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STARTING EARLY MARCH 2007, MY 2001 CHEVROLET 2500HD, 8.1L TRUCK BEGAN TO STALL IN MANY AND DIFFERENT CIRCUMSTANCES. I WAS FIRST STOPPED AT A LIGHT ON A BUSINESS TRIP THEN BEGAN TO GO AND SHORTLY AFTER THE ENGINE DIED AND VARIOUS LIGHTS ILLUMINATED ON THE DASH AND SYSTEM WARNING BOX. FROM THAT POINT IT HAS CONTINUED TO STALL AT DIFFERENT SPEEDS AND DIFFERENT TIMES FOR NO APPARENT REASON. IT HAS RESTARTED EACH TIME, SOMETIMES AFTER JUST A MINUTE AND SOMETIMES UP TO 5 OR SO MINUTES. TO DATE IT HAS NOT BEEN DETERMINED THE CAUSE AND NO ONE CAN TELL ME HOW TO FIX IT. THIS IS DEEPLY TROUBLING DUE TO THE FACT THAT MY WIFE DRIVES IT A LOT AND CARRIES MY THREE CHILDREN WITH HER AND IT HAS CONTINUED TO STOP ON MAJOR ROADS, RURAL ROADS, AND JUST ANYWHERE IT DECIDES. THIS NEEDS TO BE ADDRESSED THOROUGHLY!!! *JB
NHTSA ODI #10186527
34,500 miles · Mar 8, 2007
Engine And Engine Cooling
MY 2001 CHEVROLET SILVERADO PICK-UP WITH THE 8.1 L ENGINE, SUDDENLY SHUTS DOWN WHILE DRIVING. THE FAULT CODE INDICATES THAT THE CRANKCASE POSITION SENSOR IS DEFECTIVE. *JB
NHTSA ODI #10184522
70,000 miles · Mar 5, 2007
Steering
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. ON MARCH 2, 2007, WHILE DRIVING 70M PH THE CONTACT NOTICED ONCOMING TRAFFIC, AND WHEN ATTEMPTING TO APPLY THE BRAKES THEY FAILED. THE CONTACT WAS UNABLE TO GAIN CONTROL OF THE STEERING WHEEL. THE DEALER ADVISED THE CONTACT THAT THERE WAS A LINE IN THE POWER STEERING BO…
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. ON MARCH 2, 2007, WHILE DRIVING 70M PH THE CONTACT NOTICED ONCOMING TRAFFIC, AND WHEN ATTEMPTING TO APPLY THE BRAKES THEY FAILED. THE CONTACT WAS UNABLE TO GAIN CONTROL OF THE STEERING WHEEL. THE DEALER ADVISED THE CONTACT THAT THERE WAS A LINE IN THE POWER STEERING BOOSTER THAT CAUSED THE FAILURE. THE MANUFACTURER STATED THAT THERE WAS NOTHING THEY COULD DO TO ASSIST THE CONTACT WITH THE REPAIRS. THE CURRENT AND FAILURE MILEAGE WAS 70,000. *AK UPDATED 04/05/07. *JB
NHTSA ODI #10184231
53,800 miles · Feb 8, 2007
Service Brakes, HydraulicSteering
FOUND FLUID ON FLOOR UNDERNEATH MOTOR AREA. CHECKED POWER STEERING RESERVOIR AND FOUND IT TO BE FULL. I FOUND I HAD LOST POWER STEERING, WHEN I PUT VEHICLE IN GEAR TO MOVE OUT OF GARAGE AREA, I FOUND THAT I HAD ALSO LOST MY BRAKES. (PEDAL WENT TO THE FLOOR) I WAS THANKFUL THAT I WAS NOT ON THE HIGHWAY PULLING A TRAILER AT THIS …
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FOUND FLUID ON FLOOR UNDERNEATH MOTOR AREA. CHECKED POWER STEERING RESERVOIR AND FOUND IT TO BE FULL. I FOUND I HAD LOST POWER STEERING, WHEN I PUT VEHICLE IN GEAR TO MOVE OUT OF GARAGE AREA, I FOUND THAT I HAD ALSO LOST MY BRAKES. (PEDAL WENT TO THE FLOOR) I WAS THANKFUL THAT I WAS NOT ON THE HIGHWAY PULLING A TRAILER AT THIS TIME. NO POWER STEERING AND NO BRAKES. I CONTACTED POWER CHEVROLET IN VALENCIA AND THEY TOLD ME NOT TO DRIVE THE VEHICLE BUT TO HAVE IT TOWED TO THEIR LOCATION. WHEN THE VEHICLE ARRIVED AT THE DEALERSHIP AND WAS REMOVED FROM THE TOW TRUCK, A SERVICE REPRESENTATIVE WAS ABLE TO MOVE THE VEHICLE. HE STATED THAT IT HAD BOTH POWER STEERING AND BRAKES. THE SERVICE REPRESENTATIVE DROVE THE TRUCK AROUND THE LOT SEVERAL TIMES TO DEMONSTRATE THAT EVERYTHING WAS WORKING FINE. AT THE CONCLUSION OF HIS LAST TRIP AROUND THE LOT, THE BRAKE PEDAL WENT TO THE FLOOR. I RECEIVED A CALL FROM THE SERVICE DEPARTMENT SUGGESTING THAT I CHANGE THE POWER STEERING PUMP. I WAS NOT COMFORTABLE ABOUT THIS SUGGESTION SINCE I HAD ALSO LOST MY BRAKES. THE ONE COMPONENT PART THAT AFFECTS BOTH POWER STEERING AND BRAKES IS THE HYDRO-BOOSTER. I HAD THEM REPLACE THE POWER STEERING PUMP AND HYRO-BOOSTER. THEY CLAIM THERE HAVE NOT BEEN ANY RECALLS ON EITHER OF THESE PARTS. *JB
NHTSA ODI #10182025
80,000 miles · Jan 11, 2007
Exterior Lighting
I HAVE A 2001 DURAMAX. WHILE DRIVING HOME ONE NIGHT FROM KALISPEL MT, I DIMMED MY LIGHTS FOR ANOTHER CAR AND MY LIGHTS WOULD NOT GO BACK TO BRIGHT THEN MY STEERING WHEEL STARTED TO SMOKE AND MY LIGHTS WENT OUT ALL TOGETHER CAUSING ME TO RUN OFF THE ROAD. I PULLED THE COVER OFF THE STEERING COLUMN AND THE DIMMER SWITCH WAS MELTED…
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I HAVE A 2001 DURAMAX. WHILE DRIVING HOME ONE NIGHT FROM KALISPEL MT, I DIMMED MY LIGHTS FOR ANOTHER CAR AND MY LIGHTS WOULD NOT GO BACK TO BRIGHT THEN MY STEERING WHEEL STARTED TO SMOKE AND MY LIGHTS WENT OUT ALL TOGETHER CAUSING ME TO RUN OFF THE ROAD. I PULLED THE COVER OFF THE STEERING COLUMN AND THE DIMMER SWITCH WAS MELTED. I REPLACED IT AT $130. I KNOW MY WIFE'S 2002 IS DOING THE SAME THING. *JB
NHTSA ODI #10178444
25,700 miles · Nov 27, 2006
Service Brakes, Hydraulic
ANTI LOCK BRAKES ARE ACTIVATING UNDER LOW STOPPING SPEED CAUSING AN INCREASE IN STOPPING DISTANCE. BROUGHT VEHICLE TO RON CURRIER CHEVROLET IN SOMERWORTH NH. WAS TOLD THE ANTI LOCK BRAKE SENSOR IS OUT OF CALIBRATION. TRIED TO RESOLVE THE PROBLEM WITH CHEVEROLET AS VEHICLE HAD ONLY 25,400 MILES WHEN INCIDENT FIRST OCCURRED. WAS T…
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ANTI LOCK BRAKES ARE ACTIVATING UNDER LOW STOPPING SPEED CAUSING AN INCREASE IN STOPPING DISTANCE. BROUGHT VEHICLE TO RON CURRIER CHEVROLET IN SOMERWORTH NH. WAS TOLD THE ANTI LOCK BRAKE SENSOR IS OUT OF CALIBRATION. TRIED TO RESOLVE THE PROBLEM WITH CHEVEROLET AS VEHICLE HAD ONLY 25,400 MILES WHEN INCIDENT FIRST OCCURRED. WAS TOLD OF OTHER VEHICLES COVERED UNDER A RECALL, BUT MY VEHICLE WAS NOT INCLUDED. CURRENTLY THE VEHICLE HAS NOT BEEN REPAIRED. *JB
NHTSA ODI #10174482
25,400 miles · Nov 7, 2006
Service Brakes, Hydraulic
UNDER LOW BRAKING MY ANTI-LOCK BRAKES ACTIVATED CAUSING MY VEHICLE TO HAVE LOW BRAKING ABILITY AND CAUSING THE VEHICLE TO TAKE LONGER TO COME TO A COMPLETE STOP. *JB
NHTSA ODI #10172877
49,825 miles · Nov 7, 2006
Engine And Engine Cooling
ENGINE QUIT WITHOUT WARNING WHILE TOWING 12,000 LB TRAILER FORCING ME TO THE SIDE OF THE ROAD. AFTER A FEW MINUTES I WAS ABLE TO RESTART THE ENGINE AND CONTINUE. FAILED AGAIN SHORTLY THEREAFTER. I WAS EVENTUALLY ABLE TO GET HOME. SCAN TOOL REVEALED CRANKSHAFT POSITION SENSOR PROBLEM. I REPLACED THE CRANKSHAFT POSITION SENSO…
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ENGINE QUIT WITHOUT WARNING WHILE TOWING 12,000 LB TRAILER FORCING ME TO THE SIDE OF THE ROAD. AFTER A FEW MINUTES I WAS ABLE TO RESTART THE ENGINE AND CONTINUE. FAILED AGAIN SHORTLY THEREAFTER. I WAS EVENTUALLY ABLE TO GET HOME. SCAN TOOL REVEALED CRANKSHAFT POSITION SENSOR PROBLEM. I REPLACED THE CRANKSHAFT POSITION SENSOR MYSELF. *NM
NHTSA ODI #10172813
11 miles · Sep 21, 2006
Engine And Engine Cooling
DT*: THE CONTACT STATED THE LIFTERS IN THE ENGINE MADE CONSTANT NOISE SINCE THE DATE OF PURCHASE. THE NOISE WAS PRESENT WHEN THE IGNITION WAS TURNED ON. THE SERVICE DEALER WAS NOTIFIED, BUT THE MANUFACTURER WAS NOT.
NHTSA ODI #10168849
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.
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