NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
62 reportsClear category filter63,000 miles · May 2, 2011
Engine And Engine Cooling
2005 AVEO 63,000 THIS AVEO QUIT PULLING OUT FROM THE TURNPIKE BOOTH ON PA.43. IT WAS TOWED TO FIKE CHEVROLET WHERE I WAS TOLD THE TIMING TENSIONER PULL SPLIT IN HALF THROWING THE TIMING BELT OFF. SINCE THIS IS A INTERFERENCE ENGINE ( MEANING WITHOUT THE TIMING BELT THE VALVES HIT THE PISTONS) IT CAUSES A CATASTROPHIC FAILURE TO …
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2005 AVEO 63,000 THIS AVEO QUIT PULLING OUT FROM THE TURNPIKE BOOTH ON PA.43. IT WAS TOWED TO FIKE CHEVROLET WHERE I WAS TOLD THE TIMING TENSIONER PULL SPLIT IN HALF THROWING THE TIMING BELT OFF. SINCE THIS IS A INTERFERENCE ENGINE ( MEANING WITHOUT THE TIMING BELT THE VALVES HIT THE PISTONS) IT CAUSES A CATASTROPHIC FAILURE TO THE CYLINDER HEAD AND POSSIBLE PISTON DAMAGE. THE DEALER SALVAGE YARDS AND MOST OTHER MECHANICS ADMIT THIS IS A DEFECT IN THE PLASTIC PULLEYS AND TIMING BELT. GM SAYS (IT HAPPENS TO ALL OF THEM ) AND WILL NOT COMPENSATE FOR DAMAGES. I ASK GM IF THEY RECORDED MY CONVERSATION AND THEY DO BUT WILL NOT ALLOW ME A COPY BECAUSE IT'S FOR (INTERNAL USE ONLY) THIS AVEO HAD IT'S TIMING BELT AND HEAD REPLACED AT 11,400 MILE AND AT THE CURRENT MILEAGE IS UNDER THE MILEAGE FOR RECOMMENDED REPLACEMENT. FRONT WHEEL BEARING ALSO WHERE REPLACE 4 MONTHS AGO. THIS WAS THE FIRST AND LAST GM PRODUCT I WILL EVER BUY . *TR
NHTSA ODI #10398568
98,000 miles · Apr 23, 2011
Engine And Engine Cooling
CRACKED THERMOSTAT HOUSING- CHEAPLY MADE (PLASTIC) THERMOSTAT HOUSING WHICH CAN EASILY CRACK AND IT HAS IN SEVERAL AVEO BETWEEN THE YEARS 2004-2006. I HAVE A 2005 CHEVY AVEO AND IT CRACKED COSTING ME ENTIRELY TOO MUCH MONEY ON A TOW, RENTAL CAR ETC. *TR
NHTSA ODI #10397193
78,000 miles · Apr 22, 2011
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2005 CHEVROLET AVEO. THE CONTACT WAS DRIVING APPROXIMATELY 40-45 MPH WHEN A KNOCKING WAS HEARD FROM THE ENGINE. THE CONTACT REMOVED THE VEHICLE FROM THE ROADWAY AND SHUT THE VEHICLE OFF BUT THE VEHICLE FAILED TO RESTART. THE VEHICLE WAS THEN TOWED TO A LOCAL REPAIR SHOP WHERE SHE WAS ADVISED THAT THERE W…
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TL* THE CONTACT OWNS A 2005 CHEVROLET AVEO. THE CONTACT WAS DRIVING APPROXIMATELY 40-45 MPH WHEN A KNOCKING WAS HEARD FROM THE ENGINE. THE CONTACT REMOVED THE VEHICLE FROM THE ROADWAY AND SHUT THE VEHICLE OFF BUT THE VEHICLE FAILED TO RESTART. THE VEHICLE WAS THEN TOWED TO A LOCAL REPAIR SHOP WHERE SHE WAS ADVISED THAT THERE WERE DAMAGES TO THE ENGINE VALVES AND THAT THE HEAD WOULD NEED TO BE REMOVED. THE MECHANIC ALSO RECOMMENDED TAKING THE VEHICLE TO AN AUTHORIZED DEALER. THE VEHICLE WAS NOT TAKEN TO A DEALER. SHE CONTACTED THE MANUFACTURER AND THEY ADVISED HER THAT THEY COULD NOT PROVIDE ANY ASSISTANCE UNTIL THE VEHICLE WAS INSPECTED BY AN AUTHORIZED DEALER. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 78,000.
NHTSA ODI #10397127
92,647 miles · Apr 16, 2011
Engine And Engine Cooling
I DO HAVE COMPLAINT THAT I WOULD LIKE TO FILE. IT IS REGARDS TO 2004-2007 CHEVROLET AVEOS. I HAD BOUGHT MY 2005 AVEO BRAND NEW FROM CHEVY. IT IS NOW MY SONS CAR. HE WAS DRIVING THE CAR AT 45 MPH CAME TO A STOP LIGHT AND THE CAR JUST STOPPED. WHAT HAD HAPPENED IS THE THERMOSTAT HOUSING HAD BLOWN APART. IT IS A 2 PIECE PLASTIC PIE…
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I DO HAVE COMPLAINT THAT I WOULD LIKE TO FILE. IT IS REGARDS TO 2004-2007 CHEVROLET AVEOS. I HAD BOUGHT MY 2005 AVEO BRAND NEW FROM CHEVY. IT IS NOW MY SONS CAR. HE WAS DRIVING THE CAR AT 45 MPH CAME TO A STOP LIGHT AND THE CAR JUST STOPPED. WHAT HAD HAPPENED IS THE THERMOSTAT HOUSING HAD BLOWN APART. IT IS A 2 PIECE PLASTIC PIECE OF JUNK. A THERMOSTAT HOUSING SHOULD NEVER BLOW APART. IN 2008 CHEVY STARTING PUTTING METAL ONES ON THE CAR. ONE WEEK BEFORE THIS HAPPENED MY SON WAS TRAVELING WITH HIS 2.5 YEAR OLD DAUGHTER IN THE BACK ROADS OF PA HEADING DOWN TO VISIT HIS GRANDFATHER. IF THIS HAD HAPPENED AT THAT TIME THERE ARE LONG STRETCHES OF DESOLATE ROAD AND WITH THE MOUNTAINS MANY TIMES CELL PHONES DO NOT WORK. HE AND MY GRANDDAUGHTER COULD HAVE BEEN IN A LOT OF TROUBLE. I CANNOT BELIEVE THAT THIS HAS NOT BEEN BROUGHT TO YOUR ATTENTION BEFORE, IT IS ALL OVER THE WEB. I WILL INCLUDE SOME LINKS BELOW. THIS PROBLEM WARPED THE HEAD AND COULD HAVE DONE LOWER ENGINE DAMAGE AND CHEVY JUST WALKS AWAY, NOT OUR PROBLEM. ANYONE WHO KNOWS ABOUT CARS KNOWS A THERMOSTAT HOUSING SHOULD NOT BLOW APART. CHEVY HAS PUT AN INFERIOR QUALITY THAT IS PRONE TO FAILURE IN A CRITICAL AREA OF A CARS COOLING SYSTEM. THERE WAS NOTHING MECHANICALLY WRONG WITH THIS CAR PRIOR TO THIS INCIDENT. HTTP://TOWNHALL-TALK.EDMUNDS.COM/DIRECT/VIEW/.F117C65/ HTTP://WWW.AUTOMOTIVEFORUMS.COM/T880909-BEWARE_AVEO_S_PLASTIC_T_STAT_HOUSING.HTML HTTP://WWW.ARFC.ORG/COMPLAINTS/2004/CHEVROLET/AVEO/?Q=&PAGE=1. *TR
NHTSA ODI #10396066
39,600 miles · Mar 23, 2011
Engine And Engine Cooling
I AM DISABLED, AND IN 2005, I PURCHASED A NEW CHEVY AVEO FROM GM DEALER AND IN 2006 GM SENT NOTICE TO ALL DEALERS THAT THESE ENGINES HAD A DEFECTIVE TIMING BELT AND TO NOTIFY AND OFFER NEW CAR BUYERS A FREE REPLACEMENT OF THE DEFECTIVE PART AS FAILURE OF DEFECTIVE PART WOULD LIKELY DESTROY THE ENGINE. I RECEIVED NO NOTICE FRO…
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I AM DISABLED, AND IN 2005, I PURCHASED A NEW CHEVY AVEO FROM GM DEALER AND IN 2006 GM SENT NOTICE TO ALL DEALERS THAT THESE ENGINES HAD A DEFECTIVE TIMING BELT AND TO NOTIFY AND OFFER NEW CAR BUYERS A FREE REPLACEMENT OF THE DEFECTIVE PART AS FAILURE OF DEFECTIVE PART WOULD LIKELY DESTROY THE ENGINE. I RECEIVED NO NOTICE FROM GM OR MY DEALER. WHEN MY CAR REACHED JUST 49K MILES THE DEFECTIVE PART FAILED (RUBBER TIMING BELT) AND HAS CAUSED MASSIVE ENGINE DAMAGE REQUIRING ALL NEW HEAD, VALVES, AND OTHER PARTS. DEALER REFUSED TO EVEN DIAGNOSIS THE VEHICLE TO AVOID DOCUMENTATION OF CAUSE AND LIABILITY AND I HAD AT ATTEMPT MYSELF AND WAS SEVERELY INJURED. I LIVE ON KEY WEST AND ONLY DEALER WHO SOLD ME THE VEHICLE IS MILES SALES AND SERVICE. I HAVE SPENT $600.00 TO REPLACE DEFECTIVE TIMING BELT AND ASSOCIATED PARTS BUT ONE CYLINDER HAS NO COMPRESSION CONFIRMING VALUES WERE BENT AND A 1.5K HEAD REPLACEMENT IS NEEDED WHICH I CANNOT AFFORD LIVING SOLELY ON SOCIAL SECURITY DISABILITY IN SECTION 8 PUBLIC HOUSINGS SO NOW BEING DISABLED I HAVE NO TRANSPORTATION FOR MEDICAL APPOINTMENTS, OR EVEN FOOD SHOPPING. I WAS VICTIM SURVIVOR OF 9/11 WTC ATTACK AND SINCE GM AND DEALER KNEW OF THIS DEFECT AND FAILED TO GIVE NOTICE I BELIEVE THEY ARE IN VIOLATION OF SEVERAL CONSUMER AND REGULATORY REQUIREMENTS ABOUT KNOWN DEFECTS NOTICE AND REPLACEMENT STANDARDS AND HAVE PUT BUYERS OF THEIR PRODUCT WHO ARE DISABLED.... IN PHYSICAL DANGER. *TR
NHTSA ODI #10392679
58,872 miles · Mar 2, 2011
Engine And Engine Cooling
THE TIMING BELT IDLER PULLEY BROKE, MY TIMING BELT IS STRIPPED, AND MY VALVES ARE BENT ON MY 2005 CHEVY AVEO. IT HAS 58,872 MILES. I BOUGHT IT LESS THAN 8 WEEKS AGO. GM IS NOT BEING COOPERATIVE. *TR
NHTSA ODI #10386242
89,535 miles · Jan 25, 2011
Engine And Engine Cooling
2005 CHEVY AVEO BROKEN TIMING BELT WARPED VALVES AFTER 89,535 MILES. CAR WAS NEVER INSPECTED BY DEALERSHIP PRIOR TO SELLING CAR. TAKEN IN NUMEROUS TIMES BECAUSE OF CHECK ENGINE LIGHT ON OR FLASHING. PURCHASED CAR 5-21-10. *TR
NHTSA ODI #10378603
50,300 miles · Dec 27, 2010
Engine And Engine Cooling
I HAVE A 2005 CHEVROLET AVEO WITH 50,000 MILES. I HAVE DONE THE ROUTINE MAINTENANCE ON THE VEHICLE. HOWEVER, A WEEK AGO THE TIMING BELT BROKE AND RUINED MY ENGINE. IN MY MAINTENANCE BOOK IT SAYS NOT TO CHANGE THE BELT UNTIL 60,000 MILES AND GM IS TELLING ME IT IS MY PROBLEM SINCE I AM NO LONGER UNDER WARRANTY. I HAVE LOOKED …
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I HAVE A 2005 CHEVROLET AVEO WITH 50,000 MILES. I HAVE DONE THE ROUTINE MAINTENANCE ON THE VEHICLE. HOWEVER, A WEEK AGO THE TIMING BELT BROKE AND RUINED MY ENGINE. IN MY MAINTENANCE BOOK IT SAYS NOT TO CHANGE THE BELT UNTIL 60,000 MILES AND GM IS TELLING ME IT IS MY PROBLEM SINCE I AM NO LONGER UNDER WARRANTY. I HAVE LOOKED ON LINE AND FOUND OTHERS WHO HAVE PROBLEMS WITH THEIR TIMING BELTS GOING BEFORE THE REQUIRED MAINTENANCE. CAN YOU PLEASE HELP. THEY WANT $2,200 TO FIX VEHICLE. THIS OCCURRED WHILE I WAS DRIVING AND I LOST POWER IN MY CAR WHILE GLIDING THROUGH A RED LIGHT. THANK GOD NO ONE HIT ME. UPDATED IVOQ 02/02/11 *TR
NHTSA ODI #10372548
82,937 miles · Dec 25, 2010
Engine And Engine Cooling
WHILE DRIVING I NOTICED A SMOKE COMING FROM UNDER THE HOOD. I LOOKED DOWN TO SEE MY ENGINE TEMP INDICATOR ON HOT. I WASN'T FAR FROM MY HOME LUCKILY AT THE TIME, SO I DROVE IT HOME. I OPENED MY HOOD A COUPLE MINUTES LATER TO FIND WATER SIZZLING ON MY THERMOSTAT HOUSING. (WHICH IS CONSTRUCTED OF TWO PIECES OF PLASTIC, GLUED TOGE…
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WHILE DRIVING I NOTICED A SMOKE COMING FROM UNDER THE HOOD. I LOOKED DOWN TO SEE MY ENGINE TEMP INDICATOR ON HOT. I WASN'T FAR FROM MY HOME LUCKILY AT THE TIME, SO I DROVE IT HOME. I OPENED MY HOOD A COUPLE MINUTES LATER TO FIND WATER SIZZLING ON MY THERMOSTAT HOUSING. (WHICH IS CONSTRUCTED OF TWO PIECES OF PLASTIC, GLUED TOGETHER) I TRIED TO LOOK UP INFO ON IT AND CAME ACROSS ALL KINDS OF PEOPLE COMPLAINING ABOUT THIS EXACT SAME PROBLEM WITH THEIR 2004-2005 CHEVY AVEO LS. THE EARLIEST COMPLAINT I SAW WAS AS EARLY AS JANUARY OF 2009. AFTER LOOKING AT YOUR WEBSITE, I FOUND OUT THAT THERE IS NO RECALLS ON THIS ITEM AT ALL. ALSO, THE ONLY PLACE TO GET A NEW ONE IS AT THE DEALERSHIP FOR $91.00 AND THAT IS WITHOUT LABOR COST. IN ADDITION, IT IS NOT COVERED UNDER WARRANTY. *TR
NHTSA ODI #10372395
51,000 miles · Dec 16, 2010
Electrical SystemEngine And Engine Cooling
WAS DRIVING TO WORK AND WENT THROUGH A DRIVE THROUGH FOR COFFEE. NOTICED THAT WHILE IDLE, MY CAR STARTED TO OVER HEAT. CONTINUED ON TO WORK APPROX 1 MILE DOWN THE ROAD. WHEN I GOT THERE I OPENED THE HOOD AND FOUND THAT A HOSE WAS NO LONGER CONNECTED TO THE THERMOSTAT HOUSING. THEN I NOTICED THAT THE PLASTIC HOUSING ITSELF WAS CR…
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WAS DRIVING TO WORK AND WENT THROUGH A DRIVE THROUGH FOR COFFEE. NOTICED THAT WHILE IDLE, MY CAR STARTED TO OVER HEAT. CONTINUED ON TO WORK APPROX 1 MILE DOWN THE ROAD. WHEN I GOT THERE I OPENED THE HOOD AND FOUND THAT A HOSE WAS NO LONGER CONNECTED TO THE THERMOSTAT HOUSING. THEN I NOTICED THAT THE PLASTIC HOUSING ITSELF WAS CRACKED IN HALF AND HANGING OFF THE CAR. IT COST ME ABOUT $80 FOR A REPLACEMENT METAL PART WHICH I HAD INSTALLED BY A FRIEND. THIS HAPPENED DURING THE SUMMER 2010; CAR HAD APPROX 51,000 MILES. IT IS NOW DECEMBER 2010, AND CAR HAS APPROX 56,00 MILES. MY CHECK ENGINE LIGHT IS ON AND I BROUGHT THE CAR TO A CAR PART STORE TO HAVE THEM CHECK THE CODE. APPARENTLY NOW I HAVE TO REPLACE THE OXYGEN SENSOR, WHICH COSTS ABOUT $150.00 + LABOR. I BOUGHT THIS CAR USED IN 2007 AND STILL HAVE ABOUT 2 YEARS LEFT TO PAY ON IT. THE WARRANTY IS NO LONGER GOOD. *TR
NHTSA ODI #10370916
NHTSA investigations
2EA08005 · Stuck Throttle Valve
Opened Feb 14, 2008 · Closed Oct 14, 2008
Status: closed (inferred from source dates) · Engine And Engine Cooling:exhaust System:emission Control:crankcase (pcv); Vehicle Speed Control
TO DATE, THE OFFICE OF DEFECTS INVESTIGATION (ODI) IS AWARE OF 29 NON-DUPLICATIVE COMPLAINTS/FIELD REPORTS AND 52 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT AFFECTING 69 UNIQUE SUBJECT VEHICLES.BECAUSE THE ALLEGED DEFECT CONDITION IS MOST LIKELY TO OCCUR DURING WINTER MONTHS WHEN AMBIENT TEMPERATURES ARE BELOW FREEZING, ODI UPGRADED THIS INVESTIGATION TO AN ENGINEERING ANALYSIS ON FEBRUARY 14, 2008 SO THAT IT COULD CONTINUE TO MONITOR THE FIELD EXPERIENCE DURING THE 2007/2008 WINTER SEASON.BY LETTER DATED MAY 22, 2008, GENERAL MOTORS CORP. (GM) SUPPLEMENTED ITS PREVIOUS INFORMATION REQUEST RESPONSE WITH FIELD DATA RECEIVED BY GM THROUGH MAY 1, 2008.ACCORDING TO GM, WHEN MOISTURE FREEZES IN THE POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM AND/OR THE ENGINE AIR INTAKE TRACT IT IS MOST OFTEN OBSERVED AS A HARD TO START/NO START CONDITION, THROTTLE STUCK CLOSED, ROUGH RUNNING ENGINE, STALLING AT IDLE, OR OIL LEAKAGE.OF THE 29 COMPLAINTS RELATED TO STUCK THROTTLE, ODI IDENTIFIED 5 REPORTS THAT ALLEGE UNWANTED ACCELERATION, 13 REPORTS DESCRIBE AN APPARENT HIGH-IDLE CONDITION AT START UP OR WHEN SLOWING THE VEHICLE TO A STOP WITHOUT ANY ALLEGATION OF UNWANTED ACCELERATION OR DIMINISHED BRAKING PERFORMANCE, AND THE REMAINING 11 REPORTS DESCRIBE AMBIGUOUS ALLEGATIONS OF STUCK THROTTLE WITHOUT REGARD TO SEVERITY OR CONSEQUENCE.ODI ANALYSIS OF FIELD INCIDENT DATA SHOWS THAT THE COMPLAINT AND WARRANTY TRENDS APPEAR TO BE IN DECLINE, WITH ONLY 1 ADDITIONAL COMPLAINT AND 6 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT RECEIVED BY GM SINCE APRIL 2007. A SAFETY-RELATED DEFECT TREND HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION HAS BEEN CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
Additional source detail variants (2)
Engine And Engine Cooling:exhaust System:emission Control:crankcase (pcv)
TO DATE, THE OFFICE OF DEFECTS INVESTIGATION (ODI) IS AWARE OF 29 NON-DUPLICATIVE COMPLAINTS/FIELD REPORTS AND 52 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT AFFECTING 69 UNIQUE SUBJECT VEHICLES.BECAUSE THE ALLEGED DEFECT CONDITION IS MOST LIKELY TO OCCUR DURING WINTER MONTHS WHEN AMBIENT TEMPERATURES ARE BELOW FREEZING, ODI UPGRADED THIS INVESTIGATION TO AN ENGINEERING ANALYSIS ON FEBRUARY 14, 2008 SO THAT IT COULD CONTINUE TO MONITOR THE FIELD EXPERIENCE DURING THE 2007/2008 WINTER SEASON.BY LETTER DATED MAY 22, 2008, GENERAL MOTORS CORP. (GM) SUPPLEMENTED ITS PREVIOUS INFORMATION REQUEST RESPONSE WITH FIELD DATA RECEIVED BY GM THROUGH MAY 1, 2008.ACCORDING TO GM, WHEN MOISTURE FREEZES IN THE POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM AND/OR THE ENGINE AIR INTAKE TRACT IT IS MOST OFTEN OBSERVED AS A HARD TO START/NO START CONDITION, THROTTLE STUCK CLOSED, ROUGH RUNNING ENGINE, STALLING AT IDLE, OR OIL LEAKAGE.OF THE 29 COMPLAINTS RELATED TO STUCK THROTTLE, ODI IDENTIFIED 5 REPORTS THAT ALLEGE UNWANTED ACCELERATION, 13 REPORTS DESCRIBE AN APPARENT HIGH-IDLE CONDITION AT START UP OR WHEN SLOWING THE VEHICLE TO A STOP WITHOUT ANY ALLEGATION OF UNWANTED ACCELERATION OR DIMINISHED BRAKING PERFORMANCE, AND THE REMAINING 11 REPORTS DESCRIBE AMBIGUOUS ALLEGATIONS OF STUCK THROTTLE WITHOUT REGARD TO SEVERITY OR CONSEQUENCE.ODI ANALYSIS OF FIELD INCIDENT DATA SHOWS THAT THE COMPLAINT AND WARRANTY TRENDS APPEAR TO BE IN DECLINE, WITH ONLY 1 ADDITIONAL COMPLAINT AND 6 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT RECEIVED BY GM SINCE APRIL 2007. A SAFETY-RELATED DEFECT TREND HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION HAS BEEN CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
Vehicle Speed Control
TO DATE, THE OFFICE OF DEFECTS INVESTIGATION (ODI) IS AWARE OF 29 NON-DUPLICATIVE COMPLAINTS/FIELD REPORTS AND 52 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT AFFECTING 69 UNIQUE SUBJECT VEHICLES.BECAUSE THE ALLEGED DEFECT CONDITION IS MOST LIKELY TO OCCUR DURING WINTER MONTHS WHEN AMBIENT TEMPERATURES ARE BELOW FREEZING, ODI UPGRADED THIS INVESTIGATION TO AN ENGINEERING ANALYSIS ON FEBRUARY 14, 2008 SO THAT IT COULD CONTINUE TO MONITOR THE FIELD EXPERIENCE DURING THE 2007/2008 WINTER SEASON.BY LETTER DATED MAY 22, 2008, GENERAL MOTORS CORP. (GM) SUPPLEMENTED ITS PREVIOUS INFORMATION REQUEST RESPONSE WITH FIELD DATA RECEIVED BY GM THROUGH MAY 1, 2008.ACCORDING TO GM, WHEN MOISTURE FREEZES IN THE POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM AND/OR THE ENGINE AIR INTAKE TRACT IT IS MOST OFTEN OBSERVED AS A HARD TO START/NO START CONDITION, THROTTLE STUCK CLOSED, ROUGH RUNNING ENGINE, STALLING AT IDLE, OR OIL LEAKAGE.OF THE 29 COMPLAINTS RELATED TO STUCK THROTTLE, ODI IDENTIFIED 5 REPORTS THAT ALLEGE UNWANTED ACCELERATION, 13 REPORTS DESCRIBE AN APPARENT HIGH-IDLE CONDITION AT START UP OR WHEN SLOWING THE VEHICLE TO A STOP WITHOUT ANY ALLEGATION OF UNWANTED ACCELERATION OR DIMINISHED BRAKING PERFORMANCE, AND THE REMAINING 11 REPORTS DESCRIBE AMBIGUOUS ALLEGATIONS OF STUCK THROTTLE WITHOUT REGARD TO SEVERITY OR CONSEQUENCE.ODI ANALYSIS OF FIELD INCIDENT DATA SHOWS THAT THE COMPLAINT AND WARRANTY TRENDS APPEAR TO BE IN DECLINE, WITH ONLY 1 ADDITIONAL COMPLAINT AND 6 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT RECEIVED BY GM SINCE APRIL 2007. A SAFETY-RELATED DEFECT TREND HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION HAS BEEN CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
PE07051 · Stuck Throttle Valve
Opened Oct 19, 2007 · Closed Feb 14, 2008
Status: closed (inferred from source dates) · Engine And Engine Cooling:exhaust System:emission Control:crankcase (pcv); Vehicle Speed Control
ON OCTOBER 19, 2007, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION TO INVESTIGATE ALLEGED STUCK THROTTLE INCIDENTS DUE TO ICE FORMATION WITHIN THE ENGINE AIR INTAKE TRACT IN CERTAIN MODEL YEAR (MY) 2004-2005 CHEVROLET AVEO VEHICLES MANUFACTURED FOR SALE OR LEASE IN THE UNITED STATES.THIS INVESTIGATION WAS PROMPTED BY A SAFETY RECALL CAMPAIGN (05F-069) CONDUCTED BY GENERAL MOTORS CORP. (GM) INVOLVING SUBSTANTIALLY SIMILAR VEHICLES MANUFACTURED FOR SALE OR LEASE IN CANADA.AT THAT TIME, GM ISSUED A TECHNICAL SERVICE BULLETIN (TSB #05-06-04-065) TO ADDRESS THE ALLEGED DEFECT CONDITION IN U.S. VEHICLES.GM SUBSEQUENTLY REVISED THE CANADIAN RECALL CAMPAIGN TO INCLUDE MORE DETAILED INSTRUCTIONS AFTER IT DISCOVERED CERTAIN VEHICLES WERE NOT PROPERLY SERVICED UNDER THE ORIGINAL RECALL CAMPAIGN.GM REVISED THE CANADIAN RECALL CAMPAIGN A SECOND TIME TO INCLUDE MORE SUBSTANTIAL CHANGES TO THE THROTTLE BODY, INTAKE MANIFOLD, POSITIVE CRANKCASE VENTILATION (PCV) AND ENGINE COOLING SYSTEMS TO FURTHER REDUCE THE LIKELIHOOD OF ICING WITHIN THE ENGINE AIR INTAKE TRACT.AGAIN, GM ISSUED A TECHNICAL SERVICE BULLETIN (TSB #08-06-04-009) TO ADDRESS THE ALLEGED DEFECT CONDITION IN U.S. VEHICLES USING THE REVISED PROCEDURE.ODI IS AWARE OF 28 NON-DUPLICATIVE COMPLAINTS/FIELD REPORTS AND 46 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT AFFECTING 63 UNIQUE SUBJECT VEHICLES.THE ALLEGED DEFECT CONDITION IS MOST LIKELY TO OCCUR DURING THE WINTER MONTHS WHEN AMBIENT TEMPERATURES ARE BELOW FREEZING.HOWEVER, THE INFORMATION PROVIDED IN GM'S RESPONSE TO ODI'S INFORMATION REQUEST LETTER DATED NOVEMBER 2, 2007, DOES NOT CAPTURE EVENTS THAT MAY HAVE OCCURRED DURING THE MOST RECENT WINTER MONTHS.ACCORDINGLY, THIS INVESTIGATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS (EA08-005) TO FURTHER STUDY THE FREQUENCY OF THE ALLEGED DEFECT.
Additional source detail variants (2)
Engine And Engine Cooling:exhaust System:emission Control:crankcase (pcv)
ON OCTOBER 19, 2007, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION TO INVESTIGATE ALLEGED STUCK THROTTLE INCIDENTS DUE TO ICE FORMATION WITHIN THE ENGINE AIR INTAKE TRACT IN CERTAIN MODEL YEAR (MY) 2004-2005 CHEVROLET AVEO VEHICLES MANUFACTURED FOR SALE OR LEASE IN THE UNITED STATES.THIS INVESTIGATION WAS PROMPTED BY A SAFETY RECALL CAMPAIGN (05F-069) CONDUCTED BY GENERAL MOTORS CORP. (GM) INVOLVING SUBSTANTIALLY SIMILAR VEHICLES MANUFACTURED FOR SALE OR LEASE IN CANADA.AT THAT TIME, GM ISSUED A TECHNICAL SERVICE BULLETIN (TSB #05-06-04-065) TO ADDRESS THE ALLEGED DEFECT CONDITION IN U.S. VEHICLES.GM SUBSEQUENTLY REVISED THE CANADIAN RECALL CAMPAIGN TO INCLUDE MORE DETAILED INSTRUCTIONS AFTER IT DISCOVERED CERTAIN VEHICLES WERE NOT PROPERLY SERVICED UNDER THE ORIGINAL RECALL CAMPAIGN.GM REVISED THE CANADIAN RECALL CAMPAIGN A SECOND TIME TO INCLUDE MORE SUBSTANTIAL CHANGES TO THE THROTTLE BODY, INTAKE MANIFOLD, POSITIVE CRANKCASE VENTILATION (PCV) AND ENGINE COOLING SYSTEMS TO FURTHER REDUCE THE LIKELIHOOD OF ICING WITHIN THE ENGINE AIR INTAKE TRACT.AGAIN, GM ISSUED A TECHNICAL SERVICE BULLETIN (TSB #08-06-04-009) TO ADDRESS THE ALLEGED DEFECT CONDITION IN U.S. VEHICLES USING THE REVISED PROCEDURE.ODI IS AWARE OF 28 NON-DUPLICATIVE COMPLAINTS/FIELD REPORTS AND 46 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT AFFECTING 63 UNIQUE SUBJECT VEHICLES.THE ALLEGED DEFECT CONDITION IS MOST LIKELY TO OCCUR DURING THE WINTER MONTHS WHEN AMBIENT TEMPERATURES ARE BELOW FREEZING.HOWEVER, THE INFORMATION PROVIDED IN GM'S RESPONSE TO ODI'S INFORMATION REQUEST LETTER DATED NOVEMBER 2, 2007, DOES NOT CAPTURE EVENTS THAT MAY HAVE OCCURRED DURING THE MOST RECENT WINTER MONTHS.ACCORDINGLY, THIS INVESTIGATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS (EA08-005) TO FURTHER STUDY THE FREQUENCY OF THE ALLEGED DEFECT.
Vehicle Speed Control
ON OCTOBER 19, 2007, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION TO INVESTIGATE ALLEGED STUCK THROTTLE INCIDENTS DUE TO ICE FORMATION WITHIN THE ENGINE AIR INTAKE TRACT IN CERTAIN MODEL YEAR (MY) 2004-2005 CHEVROLET AVEO VEHICLES MANUFACTURED FOR SALE OR LEASE IN THE UNITED STATES.THIS INVESTIGATION WAS PROMPTED BY A SAFETY RECALL CAMPAIGN (05F-069) CONDUCTED BY GENERAL MOTORS CORP. (GM) INVOLVING SUBSTANTIALLY SIMILAR VEHICLES MANUFACTURED FOR SALE OR LEASE IN CANADA.AT THAT TIME, GM ISSUED A TECHNICAL SERVICE BULLETIN (TSB #05-06-04-065) TO ADDRESS THE ALLEGED DEFECT CONDITION IN U.S. VEHICLES.GM SUBSEQUENTLY REVISED THE CANADIAN RECALL CAMPAIGN TO INCLUDE MORE DETAILED INSTRUCTIONS AFTER IT DISCOVERED CERTAIN VEHICLES WERE NOT PROPERLY SERVICED UNDER THE ORIGINAL RECALL CAMPAIGN.GM REVISED THE CANADIAN RECALL CAMPAIGN A SECOND TIME TO INCLUDE MORE SUBSTANTIAL CHANGES TO THE THROTTLE BODY, INTAKE MANIFOLD, POSITIVE CRANKCASE VENTILATION (PCV) AND ENGINE COOLING SYSTEMS TO FURTHER REDUCE THE LIKELIHOOD OF ICING WITHIN THE ENGINE AIR INTAKE TRACT.AGAIN, GM ISSUED A TECHNICAL SERVICE BULLETIN (TSB #08-06-04-009) TO ADDRESS THE ALLEGED DEFECT CONDITION IN U.S. VEHICLES USING THE REVISED PROCEDURE.ODI IS AWARE OF 28 NON-DUPLICATIVE COMPLAINTS/FIELD REPORTS AND 46 WARRANTY CLAIMS RELATED TO THE ALLEGED DEFECT AFFECTING 63 UNIQUE SUBJECT VEHICLES.THE ALLEGED DEFECT CONDITION IS MOST LIKELY TO OCCUR DURING THE WINTER MONTHS WHEN AMBIENT TEMPERATURES ARE BELOW FREEZING.HOWEVER, THE INFORMATION PROVIDED IN GM'S RESPONSE TO ODI'S INFORMATION REQUEST LETTER DATED NOVEMBER 2, 2007, DOES NOT CAPTURE EVENTS THAT MAY HAVE OCCURRED DURING THE MOST RECENT WINTER MONTHS.ACCORDINGLY, THIS INVESTIGATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS (EA08-005) TO FURTHER STUDY THE FREQUENCY OF THE ALLEGED DEFECT.
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