Illustration2004 CHEVY AVEO TIMING BELT FAILURE AT 47,000 MILES, AND AT 102,000 MILES APPROX. 53,000 MILES AFTER THE PREVIOUS FAILURE. BOTH FAILURES HAVE CAUSED SEVERE ENGINE DAMAGE. I HAVE BEEN ADVISED THAT THE MOST RECENT FAILURE COULD RESULT IN AN ENTIRE ENGINE REPLACEMENT. *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
Engine And Engine Cooling complaints
62 reportsTL*THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE VEHICLE STARTED FOR 30 SECONDS AND THEN SHUT OFF. THE VEHICLE FAILED TO RESTART. THE REPAIR SHOP STATED THAT THE TIMING BELT FAILED AND CAUSED THE VALVES TO BEND. THE CURRENT AND FAILURE MILEAGES WERE 49,000.
NO CRASH, NO INJURIES; INCIDENT BEGAN WITH REGULAR MAINTENANCE OF VEHICLE AFTER I PURCHASED THE AVEO USED; MY FUEL ECONOMY CONTINUED TO DECREASE FROM ABOUT 33 TO 34MPG DOWN BELOW 30MPG EVEN THOUGH I WAS CONTINUING TO DRIVE THE SAME WAY EVERY WEEK. ECONOMY WAS ABOUT 33-34MPG AT 26K MILES AND EVENTUALLY AT 28-29 MPG BY 34K MILES. …
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NO CRASH, NO INJURIES; INCIDENT BEGAN WITH REGULAR MAINTENANCE OF VEHICLE AFTER I PURCHASED THE AVEO USED; MY FUEL ECONOMY CONTINUED TO DECREASE FROM ABOUT 33 TO 34MPG DOWN BELOW 30MPG EVEN THOUGH I WAS CONTINUING TO DRIVE THE SAME WAY EVERY WEEK. ECONOMY WAS ABOUT 33-34MPG AT 26K MILES AND EVENTUALLY AT 28-29 MPG BY 34K MILES. AFTER CHANGING FUELS, ADDING INJECTOR CLEANER, CHECKING TIRE PRESSURE WEEKLY, CHECKING SPARK PLUG WIRES WITH NO OBVIOUS DAMAGE OR ABUSE TO ANY COMPONENT, I FINALLY PRIED OPEN THE BLACK AIR CLEANER BOX BY BREAKING TWO OF THE RUSTED BOLT/FLANGES ON THE CLEANER. THE AIR CLEANER WAS ALMOST COMPLETELY PLUGGED. I CHANGED THE FILTER AND THE FUEL MILEAGE WAS BACK TO 35 TO 37 MPG. BUT UNFORTUNATELY I HAD TO BREAK TWO BOLT/FLANGES ON THE CLEANER BOX TO GET THE CLEANER OPEN. I NOTICED ONE OTHER FLANGE WAS ALREADY BROKEN. I BELIEVE THAT THE ORIGINAL OWNER NEVER CHANGED THE AIR FILTER. THE FILTER IS INACCESSIBLE ONCE THE BOLTS ARE RUSTED TO THE NUTS. I ASKED THE DEALER ABOUT THIS AND FOUND I CANNOT GET REIMBURSED SINCE I DAMAGED THE CLEANER. I BELIEVE THAT THE DEALER WOULD NOT BE ABLE TO ACCESS THE FILTER EITHER. I DID NOTICE THAT THE BOLTS ARE STEEL/IRON BECAUSE OF THE RUST COLOR AND THE FLANGE HAS A CAPTURED NUT MADE OF BRASS WITH BLUISH-GREEN RUST. THE USE OF TWO DISSIMILAR METALS UNDER THE HOOD OF A CAR WHERE SALT AND CORROSION ARE HIGHLY LIKELY IS EXTREMELY DISSATISFIED TO A CONSUMER. I HAVE TO PAY MONEY OUT OF MY POCKET FOR A FILTER BOX REPLACEMENT WHEN THE FILTER BOX SHOULD HAVE NEVER BEEN ENGINEERED THIS WAY. THIS SEEMS LIKE THIS ISSUE SHOULD BE AN EMISSIONS ISSUE SINCE MY FUEL ECONOMY WAS SEVERELY AFFECTED. PLEASE LET ME KNOW WHAT MY OPTIONS ARE. *TR
DURING A RECENT OIL CHANGE MAINTENANCE PROCEDURE I WAS INFORMED THAT THE SERVICE TO MY AIR FILTER WAS NOT POSSIBLE DUE TO THE INABILITY TO REMOVE THE SCREWS/BOLTS/FASTENERS THAT COULD NOT BE REMOVED. *JB
ON THURSDAY MORNING 28 JUNE 2007 THE TIMING BELT ON THIS CHEVROLET AVEO BROKE, RESULTING IN CATASTROPHIC DAMAGE TO THE ENGINE. THE VEHICLE WAS TOWED TO RADLEY CHEVROLET, WHERE THIS DIAGNOSIS WAS RENDERED. RADLEY CHEVROLET HELD A NEW CAR OWNER'S ORIENTATION CLASS AT WHICH THEIR SERVICES AND HOURS WERE DISCUSSED. CLASS TOPIC…
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ON THURSDAY MORNING 28 JUNE 2007 THE TIMING BELT ON THIS CHEVROLET AVEO BROKE, RESULTING IN CATASTROPHIC DAMAGE TO THE ENGINE. THE VEHICLE WAS TOWED TO RADLEY CHEVROLET, WHERE THIS DIAGNOSIS WAS RENDERED. RADLEY CHEVROLET HELD A NEW CAR OWNER'S ORIENTATION CLASS AT WHICH THEIR SERVICES AND HOURS WERE DISCUSSED. CLASS TOPICS INCLUDED TIMELY OIL AND FILTER CHANGES. NO MENTION WAS MADE,OR EMPHASIS PLACED, ON THE NEED FOR INSPECTION OF THE TIMING BELT AT 30,000 MILES OR ITS REPLACEMENT AT 60,000 MILES. WHEN I MENTIONED THIS RECENTLY TO THE RADLEY CHEVROLET GENERAL MANAGER HE RESPONDED BY TELLING ME THAT ALL CHEVROLETS MADE IN THE USA USE TIMING CHAINS INSTEAD OF TIMING BELTS. HENCE HIS STAFF WOULD NOT THINK TO EMPHASIZE THE NEED TO INSPECT AND CHANGE THE TIMING BELT. IT APPEARED THAT THIS LACK OF CONCERN OR TRAINING MAY HAVE EXTENDED TO SOME MAINTENANCE PERSONNEL. I WAS NOT ADVISED OF THE NEED FOR THIS INSPECTION AT EITHER OF THE TWO OIL CHANGES, PERFORMED BY RADLEY AROUND THE 30,000 MILE POINT. THE TIMING BELT FAILED AT AN ODOMETER READING OF 60,331 MILES. THE 331 MILES BEYOND THE 60,000-MILE RECOMMENDED REPLACEMENT POINT SUGGEST THAT THE ODOMETER HAS AN ACCURACY BETTER THAN .55%. CONSIDERING THE TECHNOLOGY USED TO MEASURE SPEED AND MILEAGE IN VEHICLES SOLD TO THE PUBLIC IT IS NOT LIKELY THAT ANY ARE SO ACCURATE. HAD OBSERVED THAT IN DRIVING FROM ALEXANDRIA, VIRGINIA TO FREDERICKSBURG, VIRGINIA SHE WAS OFTEN AMONG THE SLOWEST ON THE ROAD IN SPITE OF SPEEDOMETER READINGS THAT SUGGEST SHE WAS DRIVING WELL ABOVE THE POSTED LIMIT. ON SEVERAL OCCASIONS SHE HAD HER HUSBAND RECORD THE ELAPSED TIME BETWEEN MILE-POSTS AND FOUND THAT THEY WERE TRAVELING AROUND 5 TO 6 MILES PER HOUR LESS THAN THE SPEEDOMETER READING. THIS AMOUNTS TO AN ODOMETER READING FROM 6.25% TO 8.5% GREATER THAN ACTUAL DISTANCE TRAVELED. HENCE AT AN ODOMETER READING OF 60,331 MILES, ACTUAL MILEAGE IS BETWEEN 56,560 AND 55,203 MILES. *AK
TIMING BELT FAILED AT 70,000 MILES CAUSING SEVERE ENGINE DAMAGE. TIMING BELT FAILURE IS APPARENTLY AN ISSUE WITH THE AVEO AS GM ISSUED A SERVICE BULLETIN ON THIS IN OCT 2006. BASED ON INTERNET SEARCH OF AVEO PROBLEMS, CHEVY IS HAVING PROBLEMS WITH THE AVEO'S TIMING BELT FAILING EVEN BEFORE THE RECOMMENDED SERVICE DATE. *JB
TIMING BELT WENT ON MY CHEVY AVEO 2004 IN JANUARY. @ 55,000 MILES AND THE BELT DAMAGED THE WHOLE ENGINE. THE GMC COMPANY REFUSED TO REPAIR IT. I FOUND OUT THAT THE CHEVY AVEOS ARE HAVING LOTS OF PROBLEMS. *TR
TL*-THE CONTACT OWNS A 2004 CHEVROLET AVEO AND STATED THAT SINCE SHE PURCHASED THE VEHICLE THE PASSENGER'S SIDE SEAT BELTS NEVER LOCKED CORRECTLY IN PLACE. SHE TOOK THE VEHICLE TO THE DEALER, AND THEY REPLACED THE SEAT BELT, BUT SHE BELIEVED THAT THEY SWITCHED IT FROM THE FRONT TO THE BACK. CURRENTLY, THE SEAT BELT HAS BEEN L…
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TL*-THE CONTACT OWNS A 2004 CHEVROLET AVEO AND STATED THAT SINCE SHE PURCHASED THE VEHICLE THE PASSENGER'S SIDE SEAT BELTS NEVER LOCKED CORRECTLY IN PLACE. SHE TOOK THE VEHICLE TO THE DEALER, AND THEY REPLACED THE SEAT BELT, BUT SHE BELIEVED THAT THEY SWITCHED IT FROM THE FRONT TO THE BACK. CURRENTLY, THE SEAT BELT HAS BEEN LOCKING WHEN ANYONE SAT IN THE BACK. ALSO, THE DOME LIGHTS IWERE CONSTANTLY BURNING OUT. THIS HAD OCCURRED ABOUT THREE OR FOUR TIMES. IN ADDITION, THE CLOCK DID NOT WORK WHENEVER SHE SET THE TIME, IT WOULD CHANGE ON ITS OWN ACCORD. SIMILARLY, THE KEY LOCK ON THE DRIVER'S SIDE FELL THROUGH THE DOOR PANEL. THE DEALER REPAIRED AND PAINTED THE DOOR THE WRONG COLOR, AND THEY PAINTED OVER THE DOOR HANDLE. JUST LAST WEEK FINALLY, THE TENSION PULLEY FELL OFF WHILE SHE WAS DRIVING ON THE FREEWAY. THEY TOLD HER THIS WAS NORMAL WEAR AND TEAR ON THE VEHICLE AND REFUSED TO MAKE FURTHER REPAIRS. THE FAILURE MILEAGE WAS 32, AND THE CURRENT MILEAGE WAS 60,750.*AK
INTRO: MAKE CHEVROLET MODEL KALOS 2004 [XXX]. AIRBAG WARNING INDICATOR WAS ON FOR SEVERAL TIMES (MORE THAN 10 TIMES). A CHECK WAS PERFORMED ON 13 AUGUST 2005 AND THE ONLY REPAIR WAS TO RESET THE SIGNAL FROM SCAN TOOL. THE SIGNAL REMAIN ON CONTINUOUSLY BEING A DANGEROUS SITUATION, SERVICE SHOP REFUSED INITIALLY TO REPAIR THE FAU…
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INTRO: MAKE CHEVROLET MODEL KALOS 2004 [XXX]. AIRBAG WARNING INDICATOR WAS ON FOR SEVERAL TIMES (MORE THAN 10 TIMES). A CHECK WAS PERFORMED ON 13 AUGUST 2005 AND THE ONLY REPAIR WAS TO RESET THE SIGNAL FROM SCAN TOOL. THE SIGNAL REMAIN ON CONTINUOUSLY BEING A DANGEROUS SITUATION, SERVICE SHOP REFUSED INITIALLY TO REPAIR THE FAULTY SRS INITIATING THE CORRECTIVE ACTIONS WERE DELAYED FOR 4 (FOUR) MONTHS SO ON 07 DECEMBER 2005 WERE REPLACED ON MY VEHICLE BOTH SIDE AIRBAGS MODULE AND THE SDM (SENSING DIAGNOSTIC MODULE). 2. AT 10000 KM OIL SPOT APPEAR ON TOP OF THE ENGINE (ENGINE DISTRIBUTION COVER) AND EVEN REPORTED TO SERVICE SHOP MECHANICS NO ACTION WAS TAKEN IN ORDER TO INVESTIGATE AND TO CORRECT THE FAILURE TILL 40603 KM WHEN THE SPOT EXTENDED AND CONTAMINATE WITH LUBRICANT TIMING BELT AREA AND FOLLOWING PARTS HAD TO BE REPLACED: HOSE, BREATHER; TIMING BELT TIMING BELT EXPANDER OIL SEAL RING 3. BRAKE, POWER STEERING, COOLANT AND CLUTCH FLUIDS AND SPARK PLUGS WERE REPLACED LATER THAN NORMAL MAINTENANCE SCHEDULE, AND ONLY AFTER I SUBMITTED A WRITTEN COMPLAIN TO THE SERVICE SHOP MANAGER. IT SUPPOSED TO BE REPLACED AT 30 000 KM AND IT WERE REPLACED AT 38070 KM. THIS ALSO IT HAPPENED WITH THE FUEL FILTER, WHICH HAD TO BE REPLACED AT 45000 KM, AND IT WAS REPLACED AT 49200 KM. 4.IT WAS REPORTED BY THE OWNER THAT AC IS OUT OF SERVICE AT 49200 KM (EVAP CONDENSER FOUND WITH A LARGE CRACK AND REFRIGERANT FLUID LOST COMPLETELY). ACCORDING TO MAINTENANCE SCHEDULE AT 45000 KM SERVICE SHOP HAD TO INSPECT EVAP CONDENSER FROM THE CONDITIONING SYSTEM AND THE PIPELINES. AC PERIODICAL MAINTENANCE NEVER HAD BEEN PERFORMED TO THE VEHICLE AS IT WAS STATED IN THE TECHNICAL SPECIFICATIONS. 5.ENGINE OIL WAS NOT THE RESPECTING API SPECIFICATIONS SO INSTEAD 5W 30 SYNTHETIC OIL WAS USED 10W 40 MINERAL OIL. IT TOOK ALMOST 18 MONTHS AND 40603 KM TO CONVINCE THEM TO USE THE PROPER OIL FOR THE ENGINE. THIS THING AFFECTED ENGINE LIFE. *JB UPDATED 07/17/2012 *JS
WHEN STARTING MY 2004 CHEVROLET AVEO AFTER IT WARMED UP AND SAT FOR ROUGHLY 5 MINUTES IT WILL NOT ALWAYS START ON FIRST TURN OF KEY. OCCASIONALLY, ROUGH IDLING ON COLD START, COOLANT SMELL COMING FROM HEATING VENTS ONLY WHEN HEAT WAS ON, A LIGHT BLUE/GREEN RESIDUE/POWDER HAS BEEN FOUND ON ALL FOUR VENTS. AT 5600 MILES COOLANT …
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WHEN STARTING MY 2004 CHEVROLET AVEO AFTER IT WARMED UP AND SAT FOR ROUGHLY 5 MINUTES IT WILL NOT ALWAYS START ON FIRST TURN OF KEY. OCCASIONALLY, ROUGH IDLING ON COLD START, COOLANT SMELL COMING FROM HEATING VENTS ONLY WHEN HEAT WAS ON, A LIGHT BLUE/GREEN RESIDUE/POWDER HAS BEEN FOUND ON ALL FOUR VENTS. AT 5600 MILES COOLANT LEVEL AT 1/2 FACTORY LEVEL, AND TRACES OF COOLANT WERE FOUND ON 2 OF 4 SPARK PLUGS BY INDEPENDENT MECHANIC. COOLANT FUMES ARE NOXIOUS, AND IT SEEMED I HAD A COLD I COULDN'T GET RID OF ALL WINTER. AS OF 4/13/2005 THE VEHICLE HAS BEEN TO 2 DIFFERENT CHEVROLET DEALERSHIPS 4 TIMES,. 3 TIMES AT DEALERSHIP OF PURCHASE, AND 1 TIME AT ANOTHER DEALERSHIP. NOTHING COULD BE DUPLICATED, AND CAR WAS CHECKED OUT. EVERYTHING WAS OKAY THIS TIME. DEALERSHIPS CHECKED SPARK PLUGS, DID PRESSURE TESTS, AND SCANNED FOR CODES. AT THIS POINT THE SECOND DEALERSHIP WAS LOOKING INTO THE RESIDUE/POWDER. *AK
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.