IllustrationTHERMOSTAT HOUSING BUSTED FOR THE 3RD TIME!!! *TR
2004 Chevrolet Aveo
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2004 Chevrolet Aveo do not stand out strongly from the model-year median of 169.
About this comparison →How this year compares
Owner complaints by model year
Compare all Aveo 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
380–25K
2025–50K
5250–75K
2575–100K
22100–150K
3150K+
160 reports with mileage · 46 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.
- Engine And Engine Cooling. Review the 62 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 37 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 23 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
23 crash reports9 fire reports17 injury reports
What owners actually said
206 reportsI WAS DRIVING AT 65 MPH AND THE CAR STALLED AND HAD TO CROSS TWO LANES OF TRAFFIC TO GET TO THE SIDE OF THE ROAD. THE TIMING BELT HAS BEEN THE SOURCE OF MY PROBLEM, IT STRIPPED OUT THE TEETH ON THE BELT. WHY WOULD CHEVY USE A TIMING BELT WHEN ALL OF ITS OTHER CARS USE CHAINS, WHY NOT MODIFY THE ENGINE THEY BOUGHT FROM DAEWOO AND…
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I WAS DRIVING AT 65 MPH AND THE CAR STALLED AND HAD TO CROSS TWO LANES OF TRAFFIC TO GET TO THE SIDE OF THE ROAD. THE TIMING BELT HAS BEEN THE SOURCE OF MY PROBLEM, IT STRIPPED OUT THE TEETH ON THE BELT. WHY WOULD CHEVY USE A TIMING BELT WHEN ALL OF ITS OTHER CARS USE CHAINS, WHY NOT MODIFY THE ENGINE THEY BOUGHT FROM DAEWOO AND PUT A CHAIN ON IT. *TR
INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) MY NAME IS [XXX], I HAVE A 2004 CHEVROLET AVEO LS WITH A 1.6L ENGINE. ON MAY 21 OF 2010 WHEN I WAS ON MY WAY TO SCHOOL LODI CA, TO SACRAMENTO CA, THE THERMOSTAT HOUSING CRACKED. I WAS UNABLE TO MAKE IT TO CLASS AND HAD TO PAY OVER 100.…
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INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) MY NAME IS [XXX], I HAVE A 2004 CHEVROLET AVEO LS WITH A 1.6L ENGINE. ON MAY 21 OF 2010 WHEN I WAS ON MY WAY TO SCHOOL LODI CA, TO SACRAMENTO CA, THE THERMOSTAT HOUSING CRACKED. I WAS UNABLE TO MAKE IT TO CLASS AND HAD TO PAY OVER 100.00 DOLLARS TO GET MY VEHICLE TOWED. WHEN I GOT THE CAR HOME I NOTICED THAT THE THERMOSTAT WAS MADE OF A "PLASTIC" MATERIAL. HOW COULD SOMETHING THAT FLOWS COOLANT AND HOLDS SUCH AN IMPORTANT PART OF THE COOLING SYSTEM BE MADE OF "PLASTIC." I THEN DID SOME RESEARCH ON THE PART, AND FINDING OUT THAT THE THERMOSTAT HOUSING HAS BEEN REPLACED WITH A FACTORY CORRECT REPLACEMENT. SO THIS IS NOT THE FIRST TIME IT HAS HAPPENED TO THIS VEHICLE. MY VEHICLE IS AT 125,000 MILES AND HAS BEEN WELL MAINTAINED, ALL NECESSARY TUNE-UPS, OIL CHANGES, TRANS. FLUID CHANGES, COOLANT FLUSH, PLUGS, ECT. I ALSO KNOW THIS IS NOT THE ONLY AVEO THAT THIS HAS HAPPENED TO MULTIPLE TIMES. THIS IS AN ONGOING PROBLEM FOR THE AVEO. ONCE AGAIN, WHY IS SOMETHING SO IMPORTANT MADE OF "PLASTIC?" I FEEL THAT THIS IS A SAFETY HAZARD, FOR EXAMPLE, IF THE ENGINE GOT TO A HIGHER TEMP. THAN IT DID, I WOULD BE LOOKING AT A WARPED HEAD, ARE EVEN WORSE, A CRACKED BLOCK. THAT COULD CAUSE MAJOR DAMAGE AND EVEN A WRECK. I ALSO FEEL CHEVROLET SHOULD TAKE RESPONSIBILITY IN THIS POOR JUDGMENT OF A PART. A RECALL SHOULD BE ISSUED AND A BETTER QUALITY PART SHOULD BE USED. I AM NOW FORCED TO REPLACE THIS PART WITHOUT ANY ASSISTANCE FROM CHEVROLET, AND IT IS NOT CHEAP. I AM A COLLEGE STUDENT THAT BOUGHT THIS CAR FOR THE ECONOMICAL AND WHAT I THOUGHT WAS "RELIABILITY" VALUE. IF THERE IS ANYTHING YOU CAN DO I WOULD APPRECIATE IT. I AND A LOT OF OTHER PEOPLE WOULD FEEL A RECALL IS DUE FOR THE THERMOSTAT HOUSING. [XXX] *TR
ON MY DAUGHTERS 2004 CHEVY AVEO I HAD THE TIMING BELT, WATER PUMP, AND T'BELT TENSIONER REPLACED AT 59826 MILES, PER MANUFACTURES RECOMMENDATION. ABOUT 20000 MILES LATER THE IDLER PULLEY BROKE, DESTROYED ENGINE. GM HAS NOT RECOMMENDED REPLACING THIS PART PER THEIR MAINTENANCE SCHEDULE , WHY NOT? *TR
TL*THE CONTACT OWNED A 2004 CHEVROLET AVEO. WHILE DRIVING APPROXIMATELY 35 MPH, THE VEHICLE CRASHED INTO THREE DEER. THE AIR BAGS DID NOT DEPLOY. THE VEHICLE WAS DESTROYED AND THE CONTACT WAS INJURED. THE CONTACT WAS TRANSPORTED TO THE HOSPITAL AND A POLICE REPORT WAS FILED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 45…
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TL*THE CONTACT OWNED A 2004 CHEVROLET AVEO. WHILE DRIVING APPROXIMATELY 35 MPH, THE VEHICLE CRASHED INTO THREE DEER. THE AIR BAGS DID NOT DEPLOY. THE VEHICLE WAS DESTROYED AND THE CONTACT WAS INJURED. THE CONTACT WAS TRANSPORTED TO THE HOSPITAL AND A POLICE REPORT WAS FILED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 45,300.
5 MONTHS AGO, WE REPLACED OUR 2004 CHEVY AVEO'S ENGINE DUE TO TIMING BELT FAILURE AND HAD A NEW ONE PUT IN. TODAY (2 WEEKS AFTER) OUR CAR BROKE DOWN AGAIN DUE TO TIMING BELT FAILURE WE ARE FINDING OUT WE ARE NEEDING TO REPLACE THE ENGINE AGAIN! *TR
SMELLED SMOKE GOT ALMOST HOME SAW SMOKE WHITE IN COLOR OPENED HOOD AND SAW THE HOUSING ON THE THERMOSTAT WAS BLOWN AND FLUID SPRAYING OUT WITH STEAM. *TR
WHEN STARTING THE CAR AND THEN TRYING TO SHIFT FROM "P" TO "D" WILL NOT MOVE HAVE TO TURN THE VEHICLE OFF PUT KEY IN SHIFT LOCK HOLE AND THEN SHIFT TO "N" AND THEN DEPRESS THE BRAKE, START THE VEHICLE THEN SHIFT DOWN TO "D" OR UP TO "R". *TR
ENGINE DESTROYED BY TIMING CHAIN FAILURE. TIMING CHAIN FAILURE RESULTED IN DAMAGED PISTONS AND VALVES. VEHICLE HAD 95,000 MILES ON IT. *TR
THE TIMING BELT ON MY 2004 CHEVY AVEO BROKE AT 55,000 MILES. GM RECOMMENDS THAT THE TIMING BELT ON AVEOS BE REPLACED AT 60,000 MILES. THERE HAVE BEEN NUMEROUS REPORTS OF AVEO TIMING BELTS BREAKING BETWEEN 50,000 TO 56,000 MILES; HOWEVER, GM HAS NOT POSTED A WARNING ON THEIR WEBSITE, NOR HAVE DEALERSHIPS BEEN INFORMED. A CLOSER I…
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THE TIMING BELT ON MY 2004 CHEVY AVEO BROKE AT 55,000 MILES. GM RECOMMENDS THAT THE TIMING BELT ON AVEOS BE REPLACED AT 60,000 MILES. THERE HAVE BEEN NUMEROUS REPORTS OF AVEO TIMING BELTS BREAKING BETWEEN 50,000 TO 56,000 MILES; HOWEVER, GM HAS NOT POSTED A WARNING ON THEIR WEBSITE, NOR HAVE DEALERSHIPS BEEN INFORMED. A CLOSER INSPECTION OF MY CAR REVEALED THAT THE IDLER PULLEY, WHICH IS MADE OF PLASTIC, MELTED AND MOLDED ITSELF TO THE ENGINE BLOCK, WHICH IS WHAT CAUSED THE BELT TO BREAK. *TR
Official recalls
214V261000 · Exterior Lighting:headlights
May 19, 2014
General Motors is recalling certain model year 2004-2008 Chevrolet Aveo vehicles equipped with daytime running lights (DRL). In the affected vehicles, there may be heat generated within the DRL module located in the center console in the instrument panel, which could melt the DRL module.
Consequence & remedy
Consequence: If the DRL module melts due to the heat generation, it could cause a vehicle fire.
Remedy: GM will notify owners, and dealers will install a revised DRL module, inspect the wiring connector for heat damage, and clean the DRL circuit grounds. Owners were sent interim notices on August 14, 2014. The recall began on February 6, 2015. Owners may contact General Motors customer service at 1-800-222-1020 (Chevrolet). General Motors recall number for this campaign is 14236.
04V407000 · Seat Belts:rear/other
Aug 17, 2004
ON CERTAIN PASSENGER VEHICLES, THE REAR SAFETY BELT CAN BECOME TWISTED.
Consequence & remedy
Consequence: IF THIS OCCURS THE SAFETY BELT RETRACTOR MAY LOCK IN POSITION SO THAT THE BELT CANNOT BE USED. IN THE EVENT OF A VEHICLE CRASH, PERSONAL INJURY TO THE SEAT OCCUPANT COULD OCCUR.
Remedy: DEALERS WILL INSTALL A SAFETY BELT WEBBING GUIDE TO PREVENT THE BELT FROM TWISTING. THE RECALL BEGAN ON OCTOBER 15, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438. VEHICLE OWNERS LOCATED IN GUAM SHOULD CONTACT GM CUSTOMER ASSISTANCE AT 1-671-648-8453.
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
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.