NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
62 reportsClear category filter92,000 miles · May 25, 2010
Engine And Engine Cooling
I WAS DRIVING AT 65 MPH AND THE CAR STALLED AND HAD TO CROSS TWO LANES OF TRAFFIC TO GET TO THE SIDE OF THE ROAD. THE TIMING BELT HAS BEEN THE SOURCE OF MY PROBLEM, IT STRIPPED OUT THE TEETH ON THE BELT. WHY WOULD CHEVY USE A TIMING BELT WHEN ALL OF ITS OTHER CARS USE CHAINS, WHY NOT MODIFY THE ENGINE THEY BOUGHT FROM DAEWOO AND…
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I WAS DRIVING AT 65 MPH AND THE CAR STALLED AND HAD TO CROSS TWO LANES OF TRAFFIC TO GET TO THE SIDE OF THE ROAD. THE TIMING BELT HAS BEEN THE SOURCE OF MY PROBLEM, IT STRIPPED OUT THE TEETH ON THE BELT. WHY WOULD CHEVY USE A TIMING BELT WHEN ALL OF ITS OTHER CARS USE CHAINS, WHY NOT MODIFY THE ENGINE THEY BOUGHT FROM DAEWOO AND PUT A CHAIN ON IT. *TR
NHTSA ODI #10332170
125,395 miles · May 21, 2010
Engine And Engine Cooling
INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) MY NAME IS [XXX], I HAVE A 2004 CHEVROLET AVEO LS WITH A 1.6L ENGINE. ON MAY 21 OF 2010 WHEN I WAS ON MY WAY TO SCHOOL LODI CA, TO SACRAMENTO CA, THE THERMOSTAT HOUSING CRACKED. I WAS UNABLE TO MAKE IT TO CLASS AND HAD TO PAY OVER 100.…
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INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) MY NAME IS [XXX], I HAVE A 2004 CHEVROLET AVEO LS WITH A 1.6L ENGINE. ON MAY 21 OF 2010 WHEN I WAS ON MY WAY TO SCHOOL LODI CA, TO SACRAMENTO CA, THE THERMOSTAT HOUSING CRACKED. I WAS UNABLE TO MAKE IT TO CLASS AND HAD TO PAY OVER 100.00 DOLLARS TO GET MY VEHICLE TOWED. WHEN I GOT THE CAR HOME I NOTICED THAT THE THERMOSTAT WAS MADE OF A "PLASTIC" MATERIAL. HOW COULD SOMETHING THAT FLOWS COOLANT AND HOLDS SUCH AN IMPORTANT PART OF THE COOLING SYSTEM BE MADE OF "PLASTIC." I THEN DID SOME RESEARCH ON THE PART, AND FINDING OUT THAT THE THERMOSTAT HOUSING HAS BEEN REPLACED WITH A FACTORY CORRECT REPLACEMENT. SO THIS IS NOT THE FIRST TIME IT HAS HAPPENED TO THIS VEHICLE. MY VEHICLE IS AT 125,000 MILES AND HAS BEEN WELL MAINTAINED, ALL NECESSARY TUNE-UPS, OIL CHANGES, TRANS. FLUID CHANGES, COOLANT FLUSH, PLUGS, ECT. I ALSO KNOW THIS IS NOT THE ONLY AVEO THAT THIS HAS HAPPENED TO MULTIPLE TIMES. THIS IS AN ONGOING PROBLEM FOR THE AVEO. ONCE AGAIN, WHY IS SOMETHING SO IMPORTANT MADE OF "PLASTIC?" I FEEL THAT THIS IS A SAFETY HAZARD, FOR EXAMPLE, IF THE ENGINE GOT TO A HIGHER TEMP. THAN IT DID, I WOULD BE LOOKING AT A WARPED HEAD, ARE EVEN WORSE, A CRACKED BLOCK. THAT COULD CAUSE MAJOR DAMAGE AND EVEN A WRECK. I ALSO FEEL CHEVROLET SHOULD TAKE RESPONSIBILITY IN THIS POOR JUDGMENT OF A PART. A RECALL SHOULD BE ISSUED AND A BETTER QUALITY PART SHOULD BE USED. I AM NOW FORCED TO REPLACE THIS PART WITHOUT ANY ASSISTANCE FROM CHEVROLET, AND IT IS NOT CHEAP. I AM A COLLEGE STUDENT THAT BOUGHT THIS CAR FOR THE ECONOMICAL AND WHAT I THOUGHT WAS "RELIABILITY" VALUE. IF THERE IS ANYTHING YOU CAN DO I WOULD APPRECIATE IT. I AND A LOT OF OTHER PEOPLE WOULD FEEL A RECALL IS DUE FOR THE THERMOSTAT HOUSING. [XXX] *TR
NHTSA ODI #10331627
81,000 miles · May 11, 2010
Engine And Engine Cooling
ON MY DAUGHTERS 2004 CHEVY AVEO I HAD THE TIMING BELT, WATER PUMP, AND T'BELT TENSIONER REPLACED AT 59826 MILES, PER MANUFACTURES RECOMMENDATION. ABOUT 20000 MILES LATER THE IDLER PULLEY BROKE, DESTROYED ENGINE. GM HAS NOT RECOMMENDED REPLACING THIS PART PER THEIR MAINTENANCE SCHEDULE , WHY NOT? *TR
NHTSA ODI #10330023
45,000 miles · Apr 21, 2010
Engine And Engine CoolingEquipment
5 MONTHS AGO, WE REPLACED OUR 2004 CHEVY AVEO'S ENGINE DUE TO TIMING BELT FAILURE AND HAD A NEW ONE PUT IN. TODAY (2 WEEKS AFTER) OUR CAR BROKE DOWN AGAIN DUE TO TIMING BELT FAILURE WE ARE FINDING OUT WE ARE NEEDING TO REPLACE THE ENGINE AGAIN! *TR
NHTSA ODI #10326772
62,560 miles · Apr 14, 2010
Engine And Engine Cooling
SMELLED SMOKE GOT ALMOST HOME SAW SMOKE WHITE IN COLOR OPENED HOOD AND SAW THE HOUSING ON THE THERMOSTAT WAS BLOWN AND FLUID SPRAYING OUT WITH STEAM. *TR
NHTSA ODI #10325709
95,000 miles · Apr 11, 2010
Engine And Engine Cooling
ENGINE DESTROYED BY TIMING CHAIN FAILURE. TIMING CHAIN FAILURE RESULTED IN DAMAGED PISTONS AND VALVES. VEHICLE HAD 95,000 MILES ON IT. *TR
NHTSA ODI #10324915
55,000 miles · Apr 7, 2010
Engine And Engine Cooling
THE TIMING BELT ON MY 2004 CHEVY AVEO BROKE AT 55,000 MILES. GM RECOMMENDS THAT THE TIMING BELT ON AVEOS BE REPLACED AT 60,000 MILES. THERE HAVE BEEN NUMEROUS REPORTS OF AVEO TIMING BELTS BREAKING BETWEEN 50,000 TO 56,000 MILES; HOWEVER, GM HAS NOT POSTED A WARNING ON THEIR WEBSITE, NOR HAVE DEALERSHIPS BEEN INFORMED. A CLOSER I…
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THE TIMING BELT ON MY 2004 CHEVY AVEO BROKE AT 55,000 MILES. GM RECOMMENDS THAT THE TIMING BELT ON AVEOS BE REPLACED AT 60,000 MILES. THERE HAVE BEEN NUMEROUS REPORTS OF AVEO TIMING BELTS BREAKING BETWEEN 50,000 TO 56,000 MILES; HOWEVER, GM HAS NOT POSTED A WARNING ON THEIR WEBSITE, NOR HAVE DEALERSHIPS BEEN INFORMED. A CLOSER INSPECTION OF MY CAR REVEALED THAT THE IDLER PULLEY, WHICH IS MADE OF PLASTIC, MELTED AND MOLDED ITSELF TO THE ENGINE BLOCK, WHICH IS WHAT CAUSED THE BELT TO BREAK. *TR
NHTSA ODI #10324171
97,000 miles · Mar 31, 2010
Engine And Engine Cooling
VEHICLE TOWED TO DEALERSHIP OCT. 2009 NO COMPRESSION REPAIR CLEAN CARBON FROM ENGINE. HAD TIMING BELT REPLACED AT THIS TIME AS PREVENTATIVE MAINT. ENGINE FAILURE ON HIGHWAY MARCH 2010. IDLER PULLEY BROKE BENT ALL VALVES AND BROKE 1 NEED TO REPLACE ENGINE. HAVE READ MANY COMPLAINTS ON LINE SAME ISSUE WITH 04 & 05 CHEVY AVEO
NHTSA ODI #10323229
53,000 miles · Feb 19, 2010
Engine And Engine CoolingUnknown Or Other
WHILE ON MY WAY HOME, I NOTICED THAT MY VEHICLE STARTED SMOKING FROM THE HOOD AND WITHOUT WARNING THE "CHECK" DASH LIGHTS CAME ON. I NOTICED THAT MY CAR STARTED SLOWING DOWN AND I COASTED IT TO THE SIDE OF THE ROAD. AT THIS POINT MY VEHICLE CUT OFF AND WOULDN'T START. ONCE, MY VEHICLE WAS TRANSPORTED HOME, I HAD MY MECHANIC …
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WHILE ON MY WAY HOME, I NOTICED THAT MY VEHICLE STARTED SMOKING FROM THE HOOD AND WITHOUT WARNING THE "CHECK" DASH LIGHTS CAME ON. I NOTICED THAT MY CAR STARTED SLOWING DOWN AND I COASTED IT TO THE SIDE OF THE ROAD. AT THIS POINT MY VEHICLE CUT OFF AND WOULDN'T START. ONCE, MY VEHICLE WAS TRANSPORTED HOME, I HAD MY MECHANIC TO COME OUT AND INSPECT MY VEHICLE. MY MECHANIC LOOKED UNDER MY HOOD AND SAW THAT MY VEHICLE HAD LOST ALOT OF ANTIFREEZE/COOLANT. HE LOOKED TO SEE WHAT CAUSE THIS AND REALIZED THAT THE THERMOSTAT HOUSING UNIT HAD BUSTED-ACTUALLY IT WAS SPLIT IN HALF. MY MECHANIC ALSO STATED THAT THE BUSTED THERMOSTAT HOUSING HAD CAUSED THE LEAKAGE OF THE ANTIFREEZE/COOLANT. MY MECHANIC INFORMED ME THAT THE THERMOSTAT HOUSING HAD TO BE REPLACED. AFTER HAVING THE THERMOSTAT HOUSING REPLACED, MY MECHANIC TRIED TO START THE CAR, BUT IT WOULDN'T TURN OVER. I HAD MY VEHICLE JUMPED, AND EVEN THE BATTERY INSPECTED BUT IT WOULDN'T START. IN ADDITION, THE STARTER, TIMING BELT WERE INSPECTED AS WELL AND WERE IN GOOD CONDITION. PLEASE BE ADVISED THAT I ONLY HAVE 53,000 MILES ON MY VEHICLE. MY MECHANIC DID A THOROUGH CHECK OF MY VEHICLE AND REALIZED THAT SOME WATER HAD LEAKED INTO MY OIL AND THAT ANTIFREEZE/COOLANT HAD SPILLED INTO AN ENGINE VALVE. FROM MY OWN RESEARCH, I'VE FOUND THAT CHEVY HAS HAD NUMEROUS PROBLEMS FROM THE 2004 CHEVY AVEOS-THERMOSTAT HOUSING UNITS FROM OTHER CUSTOMERS. IN ADDITION, ORIGINALLY THE THERMOSTAT HOUSING WAS PLASTIC, BUT CHEVY CHANGED IT TO AN ALUMINUM ONE BECAUSE THE "PLASTIC THERMOSTAT HOUSING" THAT ORIGINALLY CAME WITH THE VEHICLE WAS EXTREMELY FAULTY. IT IS VERY DISHONEST AND A SHAME THAT GM/CHEVY NEVER NOTIFIED ME THAT I NEEDED TO BRING MY 2004 CHEVY AVEO IN TO GET THE PLASTIC THERMOSTAT HOUSING REPLACED WITH THE NEW ALUMINUM ONE. I BOUGHT THIS VEHICLE BRAND NEW IN 2005. IT WAS CHEVY'S RESPONSIBILITY TO NOTIFY ME OF THIS SITUATION. ALSO, FROM WHAT I'VE GATHERED, THE PLASTIC THERMOSTAT HOUSING WAS UNSAFE. *TR
NHTSA ODI #10312292
59,000 miles · Feb 15, 2010
Engine And Engine Cooling
TIMING BELT FAILED, CAUSING ENGINE TO FAIL WHILE IN TRAFFIC. ENGINE WAS DESTROYED BY THE TIMING BELT FAILURE. *TR
NHTSA ODI #10310668
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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