Illustration2004 CHEVROLET AVEO. CONSUMER WRITES IN REGARDS TO WARRANTY NOTICE #14093 ISSUES. *SMD THE DEALER INFORMED THE CONSUMER, THE WARRANY HAD EXPIRED. ALSO, THE WATER PUMP AND TIMING BELT WERE REPLACED. *JB
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
Engine And Engine Cooling complaints
62 reports2004 CHEVROLET AVEO. CONSUMER WRITES IN REGARDS TO VEHICLE TIMING BELT FAILURE. *SMD THE CONSUMER STATED THE VEHICLE STOPPED WITH NO WARNING. *JB
IT'S THE 3RD TIME IT HAS HAPPENED. IT OCCURRED TWICE WITH MY DAUGHTER AND HER BABY IN THE CAR, TODAY WHEN I PICKED MY KID UP FROM SCHOOL; THE CAR CUT OFF WHILE IN MOTION. I HAVE CHANGED THROTTLE POSITION SENSOR, CRANK SENSOR, COOLING TEMPERATURE SENSOR, 15 AMP FUSE TWICE, REPLACED THE HEAD GASKET, SEALANT, EGR VALVE AND EGR GASK…
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IT'S THE 3RD TIME IT HAS HAPPENED. IT OCCURRED TWICE WITH MY DAUGHTER AND HER BABY IN THE CAR, TODAY WHEN I PICKED MY KID UP FROM SCHOOL; THE CAR CUT OFF WHILE IN MOTION. I HAVE CHANGED THROTTLE POSITION SENSOR, CRANK SENSOR, COOLING TEMPERATURE SENSOR, 15 AMP FUSE TWICE, REPLACED THE HEAD GASKET, SEALANT, EGR VALVE AND EGR GASKET. CLEANED OFF ALL OIL RESIDUE ON ENGINE, ON HEAD GASKETS, ON SPARK PLUGS. RECENTLY REPLACED THERMOSTAT, RADIATOR, TIMING BELT AND HAVE ALSO DID A TRANSMISSION OIL CHANGE. THE CAR IS NOT WORKING APPROPRIATELY. *TR
THE PLASTIC THERMOSTAT HOUSING COMPLETELY SNAPPED WHILE DRIVING ONLY 35 MILES PER HOUR. THERE ARE MULITPLE CHEVROLET AVEO OWNERS THAT HAVE A CAR BETWEEN THE YEARS 04-06 THAT HAVE HAD THE SAME PROBLEM. NOT ONLY IS THIS A SAFTY HAZARD, BUT A REALITIVE COSTLY FIX. *TR
TIMING BELT FAILURE AT HIGHWAY SPEED. ALMOST GOT INTO ACCIDENT. CHEVY AVEO ONLY HAD 65,000 MILES. *TR
I HAVE A 2004 CHEVY AVEO THAT ONLY HAS 65K MILES ON IT AND GETS REGULAR OIL CHANGES. I WENT IN AND HAD MY TRANSMISSION FLUID FLUSHED AND WAS TOLD THE CAR LOOKED GREAT. DROVE A FEW OTHER PLACES, AND WAS ON A STEEP HILL, TURNING AROUND (AS I HAVE DONE MANY TIMES BEFORE), AND ALL OF A SUDDEN SMOKE WAS POURING OUT OF MY ENGINE. I PA…
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I HAVE A 2004 CHEVY AVEO THAT ONLY HAS 65K MILES ON IT AND GETS REGULAR OIL CHANGES. I WENT IN AND HAD MY TRANSMISSION FLUID FLUSHED AND WAS TOLD THE CAR LOOKED GREAT. DROVE A FEW OTHER PLACES, AND WAS ON A STEEP HILL, TURNING AROUND (AS I HAVE DONE MANY TIMES BEFORE), AND ALL OF A SUDDEN SMOKE WAS POURING OUT OF MY ENGINE. I PARKED IMMEDIATELY. MY THERMOSTAT HOUSING PIECE (PLASTIC) HAD CRACKED IN HALF AND WAS SPEWING ANTIFREEZE. IN THE TWO SECONDS THE CAR WAS ON, I LOST HALF MY ANTI-FREEZE AND MY ENGINE COMPARTMENT IS COVERED IN ANTI-FREEZE. FURTHER, THE PART IS HARD TO FIND AND WILL TAKE SEVERAL DAYS FOR A REPLACEMENT. THIS PART BROKE OUT OF THE BLUE, IN THE MIDDLE OF ROUTINE DRIVING. THERE'S NO WAY TO DRIVE IT UNTIL IT'S FIXED - THE CAR WILL HAVE TO BE TOWED. I HEAR THAT THE PART IS NOW BEING MADE IN ALUMINUM AND THAT THIS IS A COMMON PROBLEM WITH THIS CAR (EVERY 50-70K THIS PIECE JUST INEXPLICABLY CRACKS). I FIRMLY BELIEVE THAT THIS SHOULD BE PART OF A STANDARD RECALL. HAD THIS PIECE BROKE AT ANY OTHER TIME (SUCH AS FIVE MINUTES PRIOR, WHEN I WAS ON THE FREEWAY) THERE WOULD HAVE BEEN DIRE CONSEQUENCES. FURTHER, HAD I ATTEMPTED TO DRIVE THE CAR ANY FURTHER, I COULD HAVE HAD AN ENGINE FIRE OR SEVERAL OTHER PROBLEMS. THIS HAS RESULTED IN THREE DAYS OF TIME AND ENERGY TO GET THIS REPAIRED (HOPEFULLY TO BE COMPLETED TOMORROW). THIS PLASTIC PIECE IS NOTHING BUT A SAFETY HAZARD AND I CONSIDER MYSELF LUCKY TO HAVE ESCAPED IN ONE PIECE. I'M YET TO FIND OUT WHAT KIND OF DAMAGE THE ANTI-FREEZE WILL DO TO MY CAR IN THE TIME IT TAKES TO GET THE CAR INTO THE SHOP TO BE FIXED UP. *TR
ENGINE STOPPED RUNNING. AT FIRST I WAS TOLD IT WAS THE TIMING BELT BUT THAT WAS NOT SUPPOSED TO BE CHANGED TILL AROUND 60,000 MILES. THE CAR HAS ONLY 48,000 MILES ON IT. I WENT AND BOUGHT A TIMING BELT AND A WATER PUMP BECAUSE I WAS TOLD THAT IF I CHANGED THE BELT I MAY AS WELL CHANGE THE WATER PUMP ALSO. AFTER A GOOD DEAL OF MO…
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ENGINE STOPPED RUNNING. AT FIRST I WAS TOLD IT WAS THE TIMING BELT BUT THAT WAS NOT SUPPOSED TO BE CHANGED TILL AROUND 60,000 MILES. THE CAR HAS ONLY 48,000 MILES ON IT. I WENT AND BOUGHT A TIMING BELT AND A WATER PUMP BECAUSE I WAS TOLD THAT IF I CHANGED THE BELT I MAY AS WELL CHANGE THE WATER PUMP ALSO. AFTER A GOOD DEAL OF MONEY I WAS TOLD IT WAS AN ENGINE FAILURE BECAUSE OF A "VALVE RING" HAD WORN AWAY. I NEED TO PUT A "NEW" ENGINE IN IT AT CONSIDERABLE COST. I HAVE BEEN LAID OFF FOR OVER A YEAR AND THIS HAS CREATED A HARDSHIP FOR ME. I CAN NOT AFFORD ANOTHER CAR PAYMENT AND THE COST TO FIX THIS CAR, ALTHOUGH CHEAPER THAN BUYING ANOTHER, IS STILL A LOT OF MONEY FOR ME. NOT ONLY IS IT HARD ENOUGH TO FIND WORK IT IS NEARLY IMPOSSIBLE WITHOUT A CAR. I BELIEVE THIS FAILURE SHOULD NOT HAVE HAPPENED AT 48,000 MILES! I AM 55 YEARS OLD AND HAVE OWNED CHEVY'S ALL MY LIFE. NOT HAPPY.
MY AVEO IS SUPPOSED TO HAVE A WARNING LIGHT TO COME ON WHEN THE ENGINE HAS TO BE SERVICED. APPARENTLY, THIS LIGHT DID NOT COME ON FOR THE WARNING THAT THERE WAS SOMETHING WRONG WITH THE VEHICLE THAT I NEED TO FIND OUT ABOUT. DRIVING TO ME(THE VEHICLE WAS DRIVEN BY MY CHILD OF 28 YEARS WITH A 3 MONTH OLD IN A REAR CAR SEAT) TO PI…
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MY AVEO IS SUPPOSED TO HAVE A WARNING LIGHT TO COME ON WHEN THE ENGINE HAS TO BE SERVICED. APPARENTLY, THIS LIGHT DID NOT COME ON FOR THE WARNING THAT THERE WAS SOMETHING WRONG WITH THE VEHICLE THAT I NEED TO FIND OUT ABOUT. DRIVING TO ME(THE VEHICLE WAS DRIVEN BY MY CHILD OF 28 YEARS WITH A 3 MONTH OLD IN A REAR CAR SEAT) TO PICK ME UP TO TAKE ME TO WORK THE CAR JUST STOPPED. IN THE MIDDLE OF ONGOING TRAFFIC. THANKFULLY THE CAR WAS NOT HIT BUT THE POLICE AS WELL AS MY BROTHER (WHOM WAS ON HIS WAY TO WORK) WERE ABLE TO GET THE CAR TO THE SIDE OF THE ROAD. HER FATHER (HE WAS CALLED) SHOWED UP WITH A TOW ON ITS WAY TO TAKE IT TO MY MECHANIC. IT WAS DETERMINED THAT THE TIMING CHAIN/BELT WENT. BECAUSE THE CAR WAS IN MOTION IT ALSO CAUSED THE BENDING OF 2 PISTONS. IN ORDER TO FIX IT PROPERLY THIS MECHANIC WAS NOT ABLE TO DO SO. I WAS INFORMED HOWEVER THAT ALL AVEOS FROM THIS MODEL OR YEAR HAS SHOWN TO HAVE THE TIMING BELT/CHAIN TO MALFUNCTION BETWEEN THE MILEAGE OF 40,000- 80,000 MILES. SO, I AM TRYING TO FIND OUT IF THERE IS A RECALL ON FIRST THE WARNING LIGHT NOT INDICATING THERE WAS SOMETHING WRONG AND SECOND, THE TIMING CHAIN/BELT MALFUNCTIONING REPEATEDLY BETWEEN THE MILES OF 40,000-80,000 MILES. I LOVE MY AVEO BECAUSE IT IS THE PERFECT SIZE, EXCELLENT ON GAS AND BEING A 2004 MODEL THERE IS ONLY ABOUT 66,000 MILES OR SO ON IT. I AM TRULY MISSING MY AVEO AND WOULD APPRECIATE IT IF SOMEONE CAN HELP ME GET IT BACK TO NORMAL SO I CAN TAKE IT HOME. I HAVE TO SAY THAT THIS IS MY FIRST REAL CAR AND I WOULD RATE IT IN THE TOP TEN VEHICLES TO PURCHASE FOR ITS TOTAL ECONOMICAL QUALITIES. SO, PLEASE LET ME KNOW AT YOUR EARLIEST CONVENIENCE.
CHEVY 2004 AVERO TIMING BELT BROKE WHICH ALSO DAMAGE ENGINE HAD TO REPLACE VALVES WHICH COST OVER $1100.00. THIS INCIDENT HAPPEN WHEN MY WIFE WAS COMING FROM THERAPY ON A HIGHWAY (BQE), IN BROOKLYN WHEN OUT OF NO-WHERE WITH NO WARNING SIGNS, THE CAR JUST STOP, WHICH COULD HAVE CAUSE A UNTHINKABLE EVENTS OF ACCIDENTS. THANK TO …
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CHEVY 2004 AVERO TIMING BELT BROKE WHICH ALSO DAMAGE ENGINE HAD TO REPLACE VALVES WHICH COST OVER $1100.00. THIS INCIDENT HAPPEN WHEN MY WIFE WAS COMING FROM THERAPY ON A HIGHWAY (BQE), IN BROOKLYN WHEN OUT OF NO-WHERE WITH NO WARNING SIGNS, THE CAR JUST STOP, WHICH COULD HAVE CAUSE A UNTHINKABLE EVENTS OF ACCIDENTS. THANK TO MY HIGHER POWER , THAT NO ONE WAS HURT OR EVEN WORSE, FATALLY INJURED. I HAD THE ENGINE RE-BUILT, HOPEFULLY THIS WOULD NEVER HAPPEN AGAIN, BECAUSE I WILL ALWAYS HAVE THE TIMING BELT INSPECTED EVER TIME I CHANGE THE OIL TO AVOID ANY FAILURE OR UNWANTED INJURIES OR DEATH DUE TO GM LACK OF NOT RECALLING THIS VECHICLE BECAUSE MY 2004 AVERO ONLY HAD 58,000 MOLES ONLY, WHEN THE CAR MANUAL INDICATES THAT IT SHOULD BE REPLACE EVERY 60,000 MILES. *LN
WAS SITTING AT A STOP LIGHT WHEN THE ENGINE ALL OF THE SUDDEN QUIT. LISTENING TO IT WHILE TRYING TO RESTART THE ENGINE, MY FIRST THOUGH WAS TIMING BELT. AFTER GETTING THE VEHICLE HOME AND INSPECTED, THE TIMING BELT WAS TIGHT BUT NOT TURNING ANYTHING, UPON FURTHER EXAMINATION IT WAS DISCOVERED THAT 14 OF 16 VALVES ARE BENT ALT…
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WAS SITTING AT A STOP LIGHT WHEN THE ENGINE ALL OF THE SUDDEN QUIT. LISTENING TO IT WHILE TRYING TO RESTART THE ENGINE, MY FIRST THOUGH WAS TIMING BELT. AFTER GETTING THE VEHICLE HOME AND INSPECTED, THE TIMING BELT WAS TIGHT BUT NOT TURNING ANYTHING, UPON FURTHER EXAMINATION IT WAS DISCOVERED THAT 14 OF 16 VALVES ARE BENT ALTHOUGH THE CRANK SHAFT TURN THE TIMING BELT IS NOT. THIS IS A PROBLEM THAT GM KNOWS ABOUT WITH THE 2004 CHEVROLET AVEO AND WILL NOT STAND BEHIND THEIR PRODUCT WHEN THEY KNOW THEY HAVE A PROBLEM. #1 NO CLEARANCE BETWEEN PISTON AND VALVES. #2 FAULTY TIMING BELT. *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.