NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
62 reportsClear category filterMileage unknown · Jan 20, 2010
Engine And Engine Cooling
I AM DRIVING MY 2004 CHEVY AVEO AT 35 MILES AN HOUR, ALL OF A SUDDEN IT DIED. I HAVE 54,000 MILES ON IT. I HAD IT TOWED TO A MECHANIC AND THEY SAID THAT THE TIMING BELT BROKE AND NOW I NEED TO REPLACE THE ENGINE. IN MY MANUAL IT SAYS THAT TIMING BELTS NEED TO BE CHECKED AT 60,000 MILES. I WAS TOLD BY GM THAT EVEN THE THAT IS THE…
Read full complaint
I AM DRIVING MY 2004 CHEVY AVEO AT 35 MILES AN HOUR, ALL OF A SUDDEN IT DIED. I HAVE 54,000 MILES ON IT. I HAD IT TOWED TO A MECHANIC AND THEY SAID THAT THE TIMING BELT BROKE AND NOW I NEED TO REPLACE THE ENGINE. IN MY MANUAL IT SAYS THAT TIMING BELTS NEED TO BE CHECKED AT 60,000 MILES. I WAS TOLD BY GM THAT EVEN THE THAT IS THE CASE I AM OUT OF MY WARRANTY SO TOUGH LUCK. I HAVE FOUND ABOUT 300 COMPLAINTS ABOUT THE SAME THING HAPPENING WHILE SEARCHING ONLINE. I DON'T KNOW IF THERE IS ANYTHING YOU CAN DO ABOUT THIS BUT I AM TRYING ANYTHING I CAN TO GET MY CAR FIXED. *TR
NHTSA ODI #10300488
46,500 miles · Dec 9, 2009
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. WHILE DRIVING BETWEEN 40-45 ON AN INCLINE SHE HEARD A LOUD KNOCKING NOISE IN THE ENGINE COMPARTMENT. NEXT THE ENGINE STALLED. THE VEHICLE HAS NOT BEEN INSPECTED FOR THE MALFUNCTION AT THIS TIME. THE FAILURE AND CURRENT MILEAGES WERE 46,500. UPDATED 1/11/09 *CN THE TIMIN…
Read full complaint
TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. WHILE DRIVING BETWEEN 40-45 ON AN INCLINE SHE HEARD A LOUD KNOCKING NOISE IN THE ENGINE COMPARTMENT. NEXT THE ENGINE STALLED. THE VEHICLE HAS NOT BEEN INSPECTED FOR THE MALFUNCTION AT THIS TIME. THE FAILURE AND CURRENT MILEAGES WERE 46,500. UPDATED 1/11/09 *CN THE TIMING BELT FAILED AND LOCKED UP THE ENGINE. UPDATED 01/13/10.*JB
NHTSA ODI #10295120
54,000 miles · Nov 12, 2009
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE ENGINE WARNING LIGHT WOULD INTERMITTENTLY ILLUMINATE ON THE INSTRUMENT CONTROL PANEL. ALSO THE VEHICLE WOULD SHIMMY WHILE DRIVING. THE VEHICLE WAS TAKEN TO THE DEALER AND A TUNE-UP WAS PERFORMED. AFTER THE REPAIR THE FAILURE RESURFACED SO THE VEHICLE WAS TAKEN BACK TO THE DEALER…
Read full complaint
TL* THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE ENGINE WARNING LIGHT WOULD INTERMITTENTLY ILLUMINATE ON THE INSTRUMENT CONTROL PANEL. ALSO THE VEHICLE WOULD SHIMMY WHILE DRIVING. THE VEHICLE WAS TAKEN TO THE DEALER AND A TUNE-UP WAS PERFORMED. AFTER THE REPAIR THE FAILURE RESURFACED SO THE VEHICLE WAS TAKEN BACK TO THE DEALER. SHE PURCHASED A FUEL CAP. THE REPAIR DID NOT REMEDY THE FAILURE BECAUSE THE VEHICLE EXHIBITED A NO-START CONDITION. A MECHANIC STATED THAT THE TIMING CHAIN FRACTURED. NO REPAIRS WERE MADE. THE CURRENT MILEAGE WAS APPROXIMATELY 63,000. THE FAILURE MILEAGE WAS APPROXIMATELY 54,000.
NHTSA ODI #10291927
112,000 miles · Oct 30, 2009
Engine And Engine Cooling
THE TIMING BELT BROKE ON MY 2004 CHEVY AVEO. I UNDERSTAND THAT THIS IS A PROBLEM FOR ALOT OF PEOPLE. I CONTACTED MY LOCAL CHEVY DEALERSHIP AND THEY SAID I WOULD HAVE TO REPLACE THE ENGINE. *TR
NHTSA ODI #10290365
60,000 miles · Sep 2, 2009
Engine And Engine Cooling
2004 CHEVY AVEO TIMING BELT BROKE CAUSING VALVES TO BREAK AND MANY OTHER RELATED PARTS AT 60000 MILES. MY MECHANIC SAID THIS IS COMMON IN THESE CARS AND HE DOESN'T UNDERSTAND WHY THERE HAS NOT BEEN A RECALL. HAD I BEEN AWARE OF THE PROBLEMS WITH THE TIMING BELTS GOING AT 40-60000 MILES IT MIGHT ONLY HAVE COST ME $50 TO REPAIR …
Read full complaint
2004 CHEVY AVEO TIMING BELT BROKE CAUSING VALVES TO BREAK AND MANY OTHER RELATED PARTS AT 60000 MILES. MY MECHANIC SAID THIS IS COMMON IN THESE CARS AND HE DOESN'T UNDERSTAND WHY THERE HAS NOT BEEN A RECALL. HAD I BEEN AWARE OF THE PROBLEMS WITH THE TIMING BELTS GOING AT 40-60000 MILES IT MIGHT ONLY HAVE COST ME $50 TO REPAIR INSTEAD OF $950.00. IT IS MY UNDERSTANDING IN MY RESEARCH SINCE THIS OCCURRED BY SPEAKING WITH MECHANICS ECT. ALL ARE IN AGREEMENT THEY DON'T UNDERSTAND WHY THERE IS NOT SOMETHING BEING DONE ON THESE BELTS. WE WERE STRANDED, COST OF TOWING AND LENGTHY AND COSTLY REPAIR FOR WHAT I AM FINDING OUT TO BE A COMMON PROBLEM WITH THIS CAR AND THE 2004 YEAR. *TR
NHTSA ODI #10282659
99,999 miles · Aug 28, 2009
Engine And Engine CoolingPower Train
TL*THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE VEHICLE WAS PURCHASED IN NOVEMBER 2007 WITH 61,000 MILES. WHILE DRIVING APPROXIMATELY 45 MPH, THE VEHICLE STALLED. THE VEHICLE WAS TOWED A DEALER AND AN INDEPENDENT MECHANIC WHO STATED THAT THE TIMING BELT FAILED AND ALSO CAUSED THE ENGINE RODS TO BREAK. THE REPAIRS WERE AT THE OWN…
Read full complaint
TL*THE CONTACT OWNS A 2004 CHEVROLET AVEO. THE VEHICLE WAS PURCHASED IN NOVEMBER 2007 WITH 61,000 MILES. WHILE DRIVING APPROXIMATELY 45 MPH, THE VEHICLE STALLED. THE VEHICLE WAS TOWED A DEALER AND AN INDEPENDENT MECHANIC WHO STATED THAT THE TIMING BELT FAILED AND ALSO CAUSED THE ENGINE RODS TO BREAK. THE REPAIRS WERE AT THE OWNER'S EXPENSE. TRANSMISSION COMPUTER ALSO FAILED ON FOUR SEPARATE OCCASIONS. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 99,999 AND THE CURRENT WAS 103,000.
NHTSA ODI #10282202
70,000 miles · Aug 19, 2009
Engine And Engine CoolingFire
CAR: AVEO 2004- 4D. THE AC GOT DAMAGED, THEN THE BLOWER. THE CAR GOT OVERHEADED AND STOPPED WORKING. $1,361 WORTH OF WORK WAS DONE (MACHINE WORK, HEAD GASKET SET, GASKET SEALER, TIMING BELT, SPARKS PLUGS, TIMING BELT TENSIONER). TWO WEEKS AFTER THE CAR STARTED OVERHEADING AGAIN AND HAD A STRONG SMELL OF GAS. THE MECHANIC RECOMME…
Read full complaint
CAR: AVEO 2004- 4D. THE AC GOT DAMAGED, THEN THE BLOWER. THE CAR GOT OVERHEADED AND STOPPED WORKING. $1,361 WORTH OF WORK WAS DONE (MACHINE WORK, HEAD GASKET SET, GASKET SEALER, TIMING BELT, SPARKS PLUGS, TIMING BELT TENSIONER). TWO WEEKS AFTER THE CAR STARTED OVERHEADING AGAIN AND HAD A STRONG SMELL OF GAS. THE MECHANIC RECOMMENDED TO BUY A CLIP TO ADJUST THE GAS HOSE!! AND TO PUT WATER TO COOOL IT DOWN... THE PROBLEM CONTINUED. I GOT TIRED AND TOOK THE CAR TO ANOTHER MECHANIC WHO AWKNOWLEDGED THE FIRST MECHANIC ASSEMBLED SOME THINGS BACKWARD. LESS THAN AN HOUR AFTER PICKING UP THE CAR FROM THE SECOND MECHANIC AND AFTER I PARKED IT...THE CAR BURST ON FIRE... IT IS GONE...GONE! *TR
NHTSA ODI #10280938
13,400 miles · Aug 18, 2009
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2004 CHEVROLET AVEO. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE SHUT OFF WITHOUT WARNING. THE DEALER WAS UNABLE TO DUPLICATE THE FAILURE. THE CURRENT AND FAILURE MILEAGES WERE 13,400.
NHTSA ODI #10280815
125,278 miles · Jun 30, 2009
Engine And Engine Cooling
I OWN A 2004 CHEVY AVEO. THE THERMOSTAT HOUSING BROKE. YOU MUST REPLACE THE ENTIRE THERMOSTAT AND THE THERMOSTAT IS NOT BROKE IT WORKS FINE. THERE WAS NO WARNING AND THE ENGINE DID NOT OVERHEAT. I DO NOT THINK A PART SHOULD BREAK APART AND IF IT DOES YOU SHOULD NOT HAVE TO REPLACE A GOOD PART. THE OIL LIGHT FLICKERED SO I C…
Read full complaint
I OWN A 2004 CHEVY AVEO. THE THERMOSTAT HOUSING BROKE. YOU MUST REPLACE THE ENTIRE THERMOSTAT AND THE THERMOSTAT IS NOT BROKE IT WORKS FINE. THERE WAS NO WARNING AND THE ENGINE DID NOT OVERHEAT. I DO NOT THINK A PART SHOULD BREAK APART AND IF IT DOES YOU SHOULD NOT HAVE TO REPLACE A GOOD PART. THE OIL LIGHT FLICKERED SO I CHECKED UNDER THE HOOD AND THE HOUSING HAD STEAM COMING OUT. *TR
NHTSA ODI #10275309
48,000 miles · Apr 18, 2009
Engine And Engine CoolingFuel System, Gasoline
MY 2004 CHEVY AVEO HAS HAD MORE PROBLEMS THAN YOU CAN IMAGINE. I HAD TO REPLACE THE TIMING BELT TWICE, SEVERE ENGINE DAMAGE BOTH TIMES. OCEAN CHEVROLET AND GM WERE ABSOLUTELY NO HELP. ROTORS HAD TO BE REPLACED AT 48,000 MILES, AN EVAP LEAK FOR ANOTHER $600.00. BOTH TIMING BELT REPAIRS WERE OVER $2000.00 EACH. I HAVE PUT MORE INT…
Read full complaint
MY 2004 CHEVY AVEO HAS HAD MORE PROBLEMS THAN YOU CAN IMAGINE. I HAD TO REPLACE THE TIMING BELT TWICE, SEVERE ENGINE DAMAGE BOTH TIMES. OCEAN CHEVROLET AND GM WERE ABSOLUTELY NO HELP. ROTORS HAD TO BE REPLACED AT 48,000 MILES, AN EVAP LEAK FOR ANOTHER $600.00. BOTH TIMING BELT REPAIRS WERE OVER $2000.00 EACH. I HAVE PUT MORE INTO REPAIRING THIS CAR THAN I PAID FOR IT. GOT RUNAROUNDS FROM THE DEALER AND GM AND WOULDN'T RECOMMEND A CHEVY PRODUCT TO ANYONE. *TR
NHTSA ODI #10265926
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.
Illustration