NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
206 reports72,950 miles · Jun 6, 2014
Air Bags
TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE CONTACT STATED THAT THE AIR BAG WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO DIAGNOSED THAT THE FLOOR MAT SENSOR AND CLOCK SPRING NEEDED TO BE REPAIRED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILU…
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TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE CONTACT STATED THAT THE AIR BAG WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO DIAGNOSED THAT THE FLOOR MAT SENSOR AND CLOCK SPRING NEEDED TO BE REPAIRED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 72,950.
NHTSA ODI #10596682
120,000 miles · Jun 3, 2014
Electrical System
TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE CONTACT STATED THAT WHEN THE KEY WAS REMOVED FROM THE IGNITION, IT WAS EXTREMELY HOT. THE VEHICLE WAS TAKEN TO MULTIPLE INDEPENDENT MECHANICS. THE TECHNICIANS WERE UNABLE TO PROPERLY DIAGNOSE THE CAUSE OF THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE …
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TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE CONTACT STATED THAT WHEN THE KEY WAS REMOVED FROM THE IGNITION, IT WAS EXTREMELY HOT. THE VEHICLE WAS TAKEN TO MULTIPLE INDEPENDENT MECHANICS. THE TECHNICIANS WERE UNABLE TO PROPERLY DIAGNOSE THE CAUSE OF THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 120,000.
NHTSA ODI #10595801
134,000 miles · May 19, 2014
Electrical SystemFuel/propulsion System
WHILE IN MY DRIVEWAY, I WENT TO TURN IGNITION ON, AND CAR WOULD NOT START. RADIO TURNED OFF. IT WAS NOT UNTIL I FLOORED THE PEDAL THAT THE GAS AND MOTOR STARTED. IT HAPPENS OFF AND ON. ALSO THE KEY AND IGNITION SWITCH ENTRY AREA ARE EXTREMELY HOT. I AM WORRIED THIS IS IN FACT ONE OF THE IGNITION PROBLEMS THAT CHEVY DID NOT LIST …
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WHILE IN MY DRIVEWAY, I WENT TO TURN IGNITION ON, AND CAR WOULD NOT START. RADIO TURNED OFF. IT WAS NOT UNTIL I FLOORED THE PEDAL THAT THE GAS AND MOTOR STARTED. IT HAPPENS OFF AND ON. ALSO THE KEY AND IGNITION SWITCH ENTRY AREA ARE EXTREMELY HOT. I AM WORRIED THIS IS IN FACT ONE OF THE IGNITION PROBLEMS THAT CHEVY DID NOT LIST OR IS REFUSING TO FIX. PLEASE HELP,. IT IS NOT THE BATTERY. UPDATED 12/8/2014 *JS
NHTSA ODI #10592542
67,000 miles · Apr 9, 2014
EnginePower TrainVehicle Speed Control
THIS IS THE SAME VEHICLE AS NHTSA INCIDENT 10393028 (SNAPPED PLASTIC THERMOSTAT HOUSING UNIT). DRIVING ON A MULTIPLE LANE FREEWAY AT ~65MPH AND THE TIMING BELT SNAPPED (HIGH PITCHED WHISTLE LIKE THE CAR WINDOW WAS SLIGHTLY OPEN). IMMEDIATELY LOST ALL SPEED CONTROL AND BEGAN RAPIDLY DECELERATING. THANKFULLY, WAS IN RIGHT HAND LAN…
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THIS IS THE SAME VEHICLE AS NHTSA INCIDENT 10393028 (SNAPPED PLASTIC THERMOSTAT HOUSING UNIT). DRIVING ON A MULTIPLE LANE FREEWAY AT ~65MPH AND THE TIMING BELT SNAPPED (HIGH PITCHED WHISTLE LIKE THE CAR WINDOW WAS SLIGHTLY OPEN). IMMEDIATELY LOST ALL SPEED CONTROL AND BEGAN RAPIDLY DECELERATING. THANKFULLY, WAS IN RIGHT HAND LANE AND WAS ABLE TO COAST OFF THE NEXT AVAILABLE EXIT. LIKELY WOULD HAVE BEEN KILLED HAD I BEEN IN ANY OTHER LANE IN MORNING TRAFFIC AND LOST CONTROL OF VEHICLE. ONCE STOPPED, CAR COULD NOT BE TURNED BACK ON AND WOULD NOT MOVE UNTIL TURNED INTO ACC MODE WHERE IT FINALLY ALLOWED ME TO SHIFT INTO NEUTRAL. HAD TO BE TOWED, EVENTUALLY TO THE DEALERSHIP. ENGINE DAMAGE WAS CATASTROPHIC AND REQUIRED EXTENSIVE AND EXPENSIVE REPAIRS (3 WEEKS AND APPROXIMATELY $2,700). SNAPPED TIMING BELT ALSO BENT PISTONS AND VALVES AND REQUIRED THE WATER PUMP TO BE REPLACED. THIS IS CLEARLY A KNOWN ISSUE THAT SHOULD BE DEALT WITH BY CHEVROLET, RATHER THAN HIDING BEHIND THE 60,000 MILE REPLACEMENT, WHICH IS LAUGHABLY LOW FOR A TIMING BELT. FURTHER - MY TIMING BELT WAS SUPPOSED TO HAVE BEEN REPLACED AT 50,000 MILES AND THUS NOT ONLY DID A CHEVROLET DEALERSHIP LIE TO ME, THEY PUT MY LIFE AT RISK BY KNOWING THIS WAS AN ISSUE THAT WOULD INEVITABLY OCCUR LONG BEFORE THE NEXT SCHEDULED BELT REPLACEMENT. THIS CAR HAS BEEN METICULOUSLY MAINTAINED WITH OIL CHANGES EVERY 3,000 MILES AND ONLY 5,000-10,000 MILES DRIVEN/YEAR. THERE WAS NO REASON FOR THE TIMING BELT TO SNAP OTHER THAN BEING A FAULTY PART THAT SHOULD HAVE BEEN RECALLED. *TR
NHTSA ODI #10578600
Mileage unknown · Mar 19, 2014
EnginePower Train
I WAS DRIVING APPROXIMATELY 25MPH WHEN SUDDENLY I HEARD A STRANGE, LOUD RUBBING/ CLATTERING NOISE COMING FROM UNDER THE HOOD. I PULLED THE VEHICLE OVER AND TURNED THE ENGINE OFF. MY BOYFRIEND, WHO IS A MECHANIC, LOOKED AT THE ENGINE AND SAID THE TIMING BELT WAS BROKEN. THE VEHICLE WOULD NOT RESTART AND HAD TO BE TOWED. NOW I AM…
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I WAS DRIVING APPROXIMATELY 25MPH WHEN SUDDENLY I HEARD A STRANGE, LOUD RUBBING/ CLATTERING NOISE COMING FROM UNDER THE HOOD. I PULLED THE VEHICLE OVER AND TURNED THE ENGINE OFF. MY BOYFRIEND, WHO IS A MECHANIC, LOOKED AT THE ENGINE AND SAID THE TIMING BELT WAS BROKEN. THE VEHICLE WOULD NOT RESTART AND HAD TO BE TOWED. NOW I AM FINDING OUT THAT THIS IS A KNOWN PROBLEM IN THIS PARTICULAR 4 CYLINDER GM VEHICLE. THIS ENGINE IS AN INTERFERENCE ENGINE. THIS MEANS THAT THE ONLY THING PREVENTING THE VALVES FROM STRIKING THE PISTONS DURING VEHICLE OPERATION IS THE TIMING BELT. IF/ WHEN IT BREAKS, IT CAUSES CATASTROPHIC ENGINE DAMAGE, OFTEN REQUIRING ENGINE REPLACEMENT. ONE OR MORE OF THE TIMING BELT PULLEYS ARE MADE OF PLASTIC. WHEN THE TIMING BELT PULLEY BREAKS, SHARDS OF PLASTIC SNAP OFF AND BECOME LODGED INSIDE OF THE ENGINE, RENDERING THE ENGINE USELESS. ALSO, AT HIGH RATE OF SPEED, THE VALVES BECOME BENT WHEN THE BELT/ PULLEY(S) MALFUNCTIONS. THIS IS BOTH COSTLY AND DANGEROUS TO THE CONSUMER, AND THE MANUFACTURER SHOULD HAVE MADE ALL PULLEYS AND MOVING PARTS ON THE ENGINE OUT OF METAL INSTEAD OF PLASTIC. *TR
NHTSA ODI #10573489
123,000 miles · Mar 18, 2014
SteeringCrash
I STOPPED AT STOP SIGN MOVED THROUGH INTERSECTION THE SUDDENLY DOVE TO THE DITCH .I WAS MOVING AT HIGHWAY SPEEDS ON I75 5 MINUTES EARLIER THEN TURNED ON THE SIDE ROAD S TO MY HOME .THE RACK AND PINION BROKE IN TWO SENDING ME INTO DITCH. IF THIS HAPPENED 10 MINUTES EARLIER I WOULD BE DEAD. *TR
NHTSA ODI #10573281
102,000 miles · Feb 25, 2014
Seat Belts
DRIVER SEAT BELT BUCKLE FROZE UP AND THE BUCKLE WOULD NOT ENGAGE. THIS BUCKLE HAS EXHIBITED DIFFICULTY IN THE LAST COUPLE OF MONTHS. MANY TIMES WOULD HAVE TO PUSH BELT INTO SLOT 2X OR 3X BEFORE THE BUCKLE WOULD CATCH. NEVER THOUGHT IT WOULD BE A ISSUE. THANK GOD MY DAUGHTER WASN'T DRIVING TO SCHOOL AND THE THING LOCKED UP O…
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DRIVER SEAT BELT BUCKLE FROZE UP AND THE BUCKLE WOULD NOT ENGAGE. THIS BUCKLE HAS EXHIBITED DIFFICULTY IN THE LAST COUPLE OF MONTHS. MANY TIMES WOULD HAVE TO PUSH BELT INTO SLOT 2X OR 3X BEFORE THE BUCKLE WOULD CATCH. NEVER THOUGHT IT WOULD BE A ISSUE. THANK GOD MY DAUGHTER WASN'T DRIVING TO SCHOOL AND THE THING LOCKED UP OR SOMETHING. NOW, IT WILL COST APPROX. $200 TO HAVE JUST THE BUCKLE REPLACED AT THE ORIGINAL DEALERSHIP I PURCHASED IT FROM. ALL I CAN SAY IS THAT THERE ARE TOO MANY PROBLEMS WITH THE AVEO SEAT BELTS STARTING FROM 2004. I LIKED THIS LITTLE CAR BUT I AM DONE. I THINK I'LL STICK WITH DODGE. THIS IS JUST MY OPINION. UNFORTUNATELY, THERE ARE OVER 1800 COMPLAINTS ON THIS VEHICLE BETWEEN 2004 AND 2011; THE MOST BEING 2004 AND 2005. I THINK MY ISSUE JUST SLIDE PAST THEM. *TR
NHTSA ODI #10565807
140,000 miles · Jul 8, 2013
Engine
TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE CONTACT STATED THAT WHILE TRAVELING 55 MPH, THE TIMING BELT FAILED. THE CONTACT STATED THAT THE FAILURE CAUSED DAMAGE TO THE VALVES. THE CONTACT SPOKE TO A DEALER AND WAS TOLD THAT THE BELT AND VALVES WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT AVAILABL…
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TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE CONTACT STATED THAT WHILE TRAVELING 55 MPH, THE TIMING BELT FAILED. THE CONTACT STATED THAT THE FAILURE CAUSED DAMAGE TO THE VALVES. THE CONTACT SPOKE TO A DEALER AND WAS TOLD THAT THE BELT AND VALVES WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE AND CURRENT MILEAGES WERE 140,000. *TR
NHTSA ODI #10523757
68,750 miles · May 28, 2013
Engine
I WAS DRIVING MY CAR ON MY LUNCH BREAK, AND HAD JUST MADE A LEFT TURN ONTO A MAJOR HIGHWAY. ABOUT 5 SECONDS AFTER I MADE THE TURN, I FELT A JOLT AND HEARD AN ODD GRINDING SOUND. MY CAR LOST POWER AND ALL THE DASHBOARD LIGHTS CAME ON. I WAS FORTUNATELY ABLE TO SAFELY STEER THE CAR FROM THE LEFT LANE TO THE RIGHT SHOULDER BEFOR…
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I WAS DRIVING MY CAR ON MY LUNCH BREAK, AND HAD JUST MADE A LEFT TURN ONTO A MAJOR HIGHWAY. ABOUT 5 SECONDS AFTER I MADE THE TURN, I FELT A JOLT AND HEARD AN ODD GRINDING SOUND. MY CAR LOST POWER AND ALL THE DASHBOARD LIGHTS CAME ON. I WAS FORTUNATELY ABLE TO SAFELY STEER THE CAR FROM THE LEFT LANE TO THE RIGHT SHOULDER BEFORE IT FINALLY STOPPED. I HAD THE ADDED FORTUNE OF BREAKING DOWN IN FRONT OF A REPAIR SHOP. IT WAS DETERMINED THAT MY TIMING BELT HAD BROKEN AND HAD BENT ALL THE VALVES IN THE ENGINE. IT TOOK 5 DAYS AND $1875 TO FIX. I HAVE SEEN DOZENS OF OTHER COMPLAINTS FROM AVEO OWNERS ABOUT TIMING BELT FAILURES LONG BEFORE THE RECOMMENDED 100K REPLACEMENT MARK, BUT CHEVROLET REFUSES TO ACKNOWLEDGE THE PROBLEM AND WON'T ISSUE A RECALL. *TR
NHTSA ODI #10513747
121,000 miles · May 1, 2013
Engine And Engine Cooling
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
NHTSA ODI #10510316
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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