NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
62 reportsClear category filter64,500 miles · Dec 9, 2008
Engine And Engine Cooling
IN THE BEGINNING I HAD NO PROBLEMS WITH THE CAR WHATSOEVER. THEN THE THERMOSTAT HOUSING BLEW APART CAUSING THE ENGINE TO OVERHEAT AND BLOWING THE HEAD GASKET. NEITHER CHEVY OR MY EXTENDED WARRANTY COMPANY (TOYOTA) WOULD COVER THE REPAIR. I HAD TO SPEND OVER ONE HUNDRED DOLLARS ON JUST THE THERMOSTAT HOUSING AND OVER THREE HUNDRE…
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IN THE BEGINNING I HAD NO PROBLEMS WITH THE CAR WHATSOEVER. THEN THE THERMOSTAT HOUSING BLEW APART CAUSING THE ENGINE TO OVERHEAT AND BLOWING THE HEAD GASKET. NEITHER CHEVY OR MY EXTENDED WARRANTY COMPANY (TOYOTA) WOULD COVER THE REPAIR. I HAD TO SPEND OVER ONE HUNDRED DOLLARS ON JUST THE THERMOSTAT HOUSING AND OVER THREE HUNDRED TO GET THE PROBLEM DIAGNOSED. THE CAR STILL SITS IN MY DRIVEWAY BROKEN. I HAD TO SPEND ANOTHER FOUR HUNDRED AND FIFTY DOLLARS TO GET THE HEAD REPAIRED AND TO BUY THE NEW GASKETS. JUST GOT THE CAR BACK TOGETHER AND STILL DOESN'T RUN RIGHT. *TR
NHTSA ODI #10251249
77,000 miles · Oct 23, 2008
Engine And Engine Cooling
I DRIVE A 2005 CHEVY AVEO, YESTERDAY 10-22-08, WHILE I WAS DRIVING ON THE FREEWAY, MY ENGINE TEMP SHOT UP TO MAX. LUCKILY I WAS JUST COMING UP ON MY EXIT SO I GOT TO THE BOTTOM OF THE OFFRAMP AND PULLED OFF TO THE SIDE. SMOKE WAS POURING OUT THE HOOD OF MY CAR. IT TURNS OUT THE PLASTIC HOUSING THERMOSTAT HOUSING CRACKED IN HALF …
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I DRIVE A 2005 CHEVY AVEO, YESTERDAY 10-22-08, WHILE I WAS DRIVING ON THE FREEWAY, MY ENGINE TEMP SHOT UP TO MAX. LUCKILY I WAS JUST COMING UP ON MY EXIT SO I GOT TO THE BOTTOM OF THE OFFRAMP AND PULLED OFF TO THE SIDE. SMOKE WAS POURING OUT THE HOOD OF MY CAR. IT TURNS OUT THE PLASTIC HOUSING THERMOSTAT HOUSING CRACKED IN HALF AND ALL THE COOLANT IN MY CAR POURED OUT. WHILE I WAS SITTING ON THE SIDE OF THE ROAD WAITING FOR THE TOW TRUCK MY ENGINE CONTINUED TO GET OVERHEATED. I REPLACED MY WATER PUMP HOUSING MYSELF CHEVY HAS AN UPDATED THERMOSTAT HOUSING MADE OF METAL NOW, BUT NOW I HAVE LARGE AMOUNTS OF AIR BLOWING THROUGH MY COOLANT RESERVOIR. MY HEAD GASKET IS BLOWN AND POSSIBLY THE HEAD IS WARPED. I WAS LOOKING ON LINE FOR INFO AND IT TURNS OUT THIS IS A VERY COMMON PROBLEM FOR MANY PEOPLE. NOW BECAUSE CHEVY DIDN'T RECALL A KNOWN PROBLEM THERE ARE HUNDREDS OF PEOPLE OUT THERE HAVING TO PAY $1,000+ TO HAVE MAJOR ENGINE WORK PERFORMED. NOT TO MENTION ALL THOSE PEOPLE STUCK ON THE SIDE OF THE ROAD WAITING FOR TOW TRUCKS. I DON'T KNOW IF THIS QUALIFIES AS SOMETHING YOUR ASSOCIATION DEALS WITH BUT I JUST THINK SOMEONE SHOULD BE NOTIFIED AND SOMETHING SHOULD BE DONE. THANK YOU FOR YOUR TIME. *TR
NHTSA ODI #10246553
34,500 miles · Oct 22, 2008
Engine And Engine Cooling
WAS DRIVING ON THE EXPRESSWAY, WHEN THE THERMOSTAT HOUSING BROKE. THE CAR'S MILEAGE WAS 34, 500. CALLED DEALERSHIP SINCE THE WAS STILL UNDER WARRANTY AND THE DEALER TOLD ME THAT THE PART WAS NOT COVERED. I HAD TO PAY UPFRONT FOR THE PART AND HAD IT REPLACED. ALSO THE CAR NOW STARTS TO SHAKE AND THE HOLD LIGHT KEEPS FLASHING…
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WAS DRIVING ON THE EXPRESSWAY, WHEN THE THERMOSTAT HOUSING BROKE. THE CAR'S MILEAGE WAS 34, 500. CALLED DEALERSHIP SINCE THE WAS STILL UNDER WARRANTY AND THE DEALER TOLD ME THAT THE PART WAS NOT COVERED. I HAD TO PAY UPFRONT FOR THE PART AND HAD IT REPLACED. ALSO THE CAR NOW STARTS TO SHAKE AND THE HOLD LIGHT KEEPS FLASHING. THIS HAPPENS ABOUT TWICE A WEEK. *TR
NHTSA ODI #10246374
77,000 miles · Oct 21, 2008
Engine And Engine Cooling
THERMOSTAT HOUSING BROKE IN HALF CAUSING OVERHEATING AND INTERNAL ENGINE DAMAGE. *TR
NHTSA ODI #10246276
44,943 miles · Oct 17, 2008
Engine And Engine Cooling
DRIVING ON THE FREEWAY UPHILL. NO WARNING LIGHTS, NO CHANGE IN TEMPERATURE. THERMOSTAT HOUSING BROKE IN HALF AT THE SEAM. THERMOSTAT IS ORIGINALLY FROM FACTORY, PERMANENTLY ENCASED IN A PLASTIC TYPE HOUSING. THIS IS ALL ONE (1) PIECE. CHEVY HAS SUPERSEDED THIS ITEM WITH A METAL TYPE HOUSING WITHIN THEIR RANKS/COMPUTERS, BECAUSE…
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DRIVING ON THE FREEWAY UPHILL. NO WARNING LIGHTS, NO CHANGE IN TEMPERATURE. THERMOSTAT HOUSING BROKE IN HALF AT THE SEAM. THERMOSTAT IS ORIGINALLY FROM FACTORY, PERMANENTLY ENCASED IN A PLASTIC TYPE HOUSING. THIS IS ALL ONE (1) PIECE. CHEVY HAS SUPERSEDED THIS ITEM WITH A METAL TYPE HOUSING WITHIN THEIR RANKS/COMPUTERS, BECAUSE IT WAS A KNOWN ISSUE. THIS ITEM (PLASTIC THERMOSTAT HOUSING) KNOWINGLY SPLITS AS EARLY AS 30,000 MILES. FOR US IT WAS ABOUT 45,000 MILES. THIS WAS NEVER A RECALL ITEM NOR WAS ANY INFO EVER SENT OUT WARNING ABOUT IT. FAILURE OF THIS PART LEADS TO THE KNOWN LEAKING AND EXPELLING OF HAZARDOUS ANTI-FREEZE/COOLANT ON ROADS BUT ALSO LEADS TO THE UNREALIZED OVERHEATING OF ENGINE. THIS CAN LEAD TO UNNECESSARY ENGINE DAMAGE FROM SIMPLE OVERHEATING OF OIL TO THE EXTREME OF BLOWN HEAD GASKETS, BLOWN/BROKEN CYLINDER RINGS, WARPED ENGINE HEADS OR COMPLETE ENGINE SEIZURE. THIS FAILING PART WAS KNOWN EARLY ENOUGH THAT THE NEW PRODUCT HAD ALREADY BEEN MADE AND DISTRIBUTED TO DEALERSHIPS. WEB LOGS ARE FULL OF THIS PARTICULAR FAILURE, ON THIS VEHICLE. 3 DAYS AFTER REPAIR, THE CAR HAS A "SLOW START", AS LONG AS 15 MIN. THE DEALER KEPT IT 2 DAYS, REPLACED PLUGS & WIRES, CHARGED $400. 3 DAYS AFTER THIS (10/13/08), SAME EXACT PROBLEM, IN ADDITION HOLD LIGHT WILL STAY ON & CAR SHAKES AS IF NOT GETTING FUEL. I MUST TURN OFF THE ENGINE AND ATTEMPT TO RESTART. THE DEALER HAS INFORMED ME UNLESS THE ACTUAL PROBLEM IS OCCURRING THEY CANNOT DIAGNOSE. TODAY (10/16/08) AFTER A SLOW START, THE A/C WORKED FOR ABOUT 10 MIN THEN STARTED BLOWING HOT AIR. TURNED IT OFF FOR A COUPLE OF MINUTES AND IT PROCEEDED WITH COOL AIR. THIS HAPPENED TWICE. *TR
NHTSA ODI #10245757
Mileage unknown · Sep 2, 2008
Engine And Engine Cooling
2005 CHEVY AVEO. THERMOSTAT IS ORIGINALLY, FROM FACTORY, PERMANENTLY ENCASED IN A PLASTIC TYPE HOUSING. THIS IS ALL ONE (1) PIECE. CHEVY HAS SUPERSEDED THIS ITEM WITH A METAL TYPE HOUSING WITHIN THEIR RANKS/COMPUTERS, BECAUSE IT WAS A KNOWN ISSUE. THIS ITEM (PLASTIC THERMOSTAT HOUSING) KNOWINGLY SPLITS AS EARLY AS 30,000 M…
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2005 CHEVY AVEO. THERMOSTAT IS ORIGINALLY, FROM FACTORY, PERMANENTLY ENCASED IN A PLASTIC TYPE HOUSING. THIS IS ALL ONE (1) PIECE. CHEVY HAS SUPERSEDED THIS ITEM WITH A METAL TYPE HOUSING WITHIN THEIR RANKS/COMPUTERS, BECAUSE IT WAS A KNOWN ISSUE. THIS ITEM (PLASTIC THERMOSTAT HOUSING) KNOWINGLY SPLITS AS EARLY AS 30,000 MILES. FOR US IT WAS ABOUT 46,000 MILES. THIS WAS NEVER A RECALL ITEM NOR WAS ANY INFORMATION EVER SENT OUT WARNING ABOUT IT. FAILURE OF THIS PART LEADS TO THE KNOWN LEAKING AND EXPELLING OF HAZARDOUS ANTI-FREEZE/COOLANT ON ROADS BUT ALSO LEADS TO THE UNREALIZED OVERHEATING OF ENGINE. THIS CAN LEAD TO UNNECESSARY ENGINE DAMAGE FROM SIMPLE OVERHEATING OF OIL TO THE EXTREME OF BLOWN HEAD GASKETS, BLOWN/BROKEN CYLINDER RINGS, WARPED ENGINE HEADS OR COMPLETE ENGINE SEIZURE. CHEVY RETAILS THE NEW METAL PART FROM $82.00 - $95.00. THIS FAILING PART WAS KNOWN EARLY ENOUGH THAT THE NEW PRODUCT HAD ALREADY BEEN MADE AND DISTRIBUTED TO DEALERSHIPS. WEB LOGS ARE FULL OF THIS PARTICULAR FAILURE, ON THIS VEHICLE. *TR
NHTSA ODI #10240594
34,500 miles · Aug 6, 2008
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHEN THE CONTACT PULLED OUT INTO TRAFFIC AT 5 MPH, THE VEHICLE WOULD STALL OR ACT AS IF IT WAS NOT GETTING ENOUGH GASOLINE TO DRIVE FORWARD. ON ONE OCCASION, THE VEHICLE COMPLETELY SHUT DOWN WITHOUT WARNING. PRIOR TO THE FAILURE, THE CONTACT PLACED THE VEHICLE INTO PARK AND RESTARTED…
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TL*THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHEN THE CONTACT PULLED OUT INTO TRAFFIC AT 5 MPH, THE VEHICLE WOULD STALL OR ACT AS IF IT WAS NOT GETTING ENOUGH GASOLINE TO DRIVE FORWARD. ON ONE OCCASION, THE VEHICLE COMPLETELY SHUT DOWN WITHOUT WARNING. PRIOR TO THE FAILURE, THE CONTACT PLACED THE VEHICLE INTO PARK AND RESTARTED IT, CAUSING IT TO QUICKLY ACCELERATE FORWARD. THE DEALER COULD NOT DIAGNOSE THE CAUSE OF THE FAILURE. THE CONTACT WAS INFORMED TO RETRIEVE HER VEHICLE BECAUSE THEY DID NOT KNOW WHETHER OR NOT THE FAILURE WAS REPAIRED. SHE ALSO CONSULTED THE MANUFACTURER AND FILED A COMPLAINT. THE VIN WAS UNKNOWN. THE CURRENT MILEAGE WAS APPROXIMATELY 34,700 AND FAILURE MILEAGE WAS APPROXIMATELY 34,500.
NHTSA ODI #10237183
6,000 miles · Jul 31, 2008
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHILE DRIVING 25 MPH, THE VEHICLE ACCELERATED WITHOUT WARNING AND WAS DIFFICULT TO SLOW DOWN. SHE WAS FORCED TO TURN THE ENGINE OFF AND RESTART IT. THE FIRST FAILURE OCCURRED IN APRIL OF 2006 AT 6,000 MILES. IN JULY 2007, THE DEALER WAS UNABLE TO DIAGNOSE THE FAILURE OR OBTAIN A REA…
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TL*THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHILE DRIVING 25 MPH, THE VEHICLE ACCELERATED WITHOUT WARNING AND WAS DIFFICULT TO SLOW DOWN. SHE WAS FORCED TO TURN THE ENGINE OFF AND RESTART IT. THE FIRST FAILURE OCCURRED IN APRIL OF 2006 AT 6,000 MILES. IN JULY 2007, THE DEALER WAS UNABLE TO DIAGNOSE THE FAILURE OR OBTAIN A READING IN THE COMPUTER. ON ONE OCCASION THE FAILURE OCCURRED 4 TIMES IN A DAY. THE DEALER ALSO OFFERED TO PURCHASE THE VEHICLE FOR $7,000. THE FAILURE MILEAGE WAS 6,000 AND CURRENT MILEAGE WAS 15,000.
NHTSA ODI #10236517
57,500 miles · Jun 24, 2008
Engine And Engine CoolingEquipment
I HAVE A 2005 CHEVY AVEO AND RECENTLY WAS DRIVING TO WORK WHEN IT STARTED TO SMOKE AND MAKE FUNNY NOISES, AFTER BEING FIXED AT THE DEALERSHIP, I WAS TOLD THAT THE CLUTCH WAS RED HOT, CRACKED THE PLATE AND THE FLY WELL AND WAS A HAZARD TO DRIVE, I HAVE ONLY HAD THE CAR THREE YRS AND NEVER DID ANYTHING TO CAUSE THIS, I AM WONDERI…
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I HAVE A 2005 CHEVY AVEO AND RECENTLY WAS DRIVING TO WORK WHEN IT STARTED TO SMOKE AND MAKE FUNNY NOISES, AFTER BEING FIXED AT THE DEALERSHIP, I WAS TOLD THAT THE CLUTCH WAS RED HOT, CRACKED THE PLATE AND THE FLY WELL AND WAS A HAZARD TO DRIVE, I HAVE ONLY HAD THE CAR THREE YRS AND NEVER DID ANYTHING TO CAUSE THIS, I AM WONDERING IF THIS WAS A MANUFACTURE OR MECHANICAL ISSUE WITH THE CAR, I ENDED UP PAYING 854$ TO FIX THE CAR BUT FOR THE TIME THAT I WAS WITHOUT IT, I HAD TO TAKE A BUS TO WORK FOR THREE WEEKS AND RELY ON FRIENDS TO HELP ME OUT. IS THIS CAR SAFE? *TR
NHTSA ODI #10232201
90,000 miles · Jun 19, 2008
Engine And Engine Cooling
TOOK THE CAR TO A REPAIR SHOP AND HE SAID THAT THE IDLER WAS OUT OF CONTROL, MELTED AND RUINED MY ENGINE. *TR
NHTSA ODI #10231663
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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