NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
62 reportsClear category filter160,000 miles · Jun 30, 2010
Engine And Engine Cooling
I WAS RUNNING ERRANDS WHEN STEAM CAME GUSHING OUT ON MY PASSENGER SIDE IN THE HOOD AREA. I PULLED OVER TO DISCOVER THAT MY THERMOSTAT HOUSING WAS BROKEN AND MY THERMOSTAT LAYING ELSEWHERE IN THE CAR. I SEARCHED THE INTERNET AND DISCOVERED THAT THIS IS A WELL-KNOWN PROBLEM. THE CURRENT THERMOSTAT HOUSING IS MADE OF PLASTIC. THE D…
Read full complaint
I WAS RUNNING ERRANDS WHEN STEAM CAME GUSHING OUT ON MY PASSENGER SIDE IN THE HOOD AREA. I PULLED OVER TO DISCOVER THAT MY THERMOSTAT HOUSING WAS BROKEN AND MY THERMOSTAT LAYING ELSEWHERE IN THE CAR. I SEARCHED THE INTERNET AND DISCOVERED THAT THIS IS A WELL-KNOWN PROBLEM. THE CURRENT THERMOSTAT HOUSING IS MADE OF PLASTIC. THE DESIGN IS SUCH THAT THE ONLY THING THAT WAS HOLDING THE THERMOSTAT IN WAS A SOUND WELDED PLASTIC SEAM. I HAVE ORDERED A NEW METAL HOUSING WITH AN IMPROVED DESIGN. TO ME, THIS INDICATES CHEVY KNEW ABOUT THIS PROBLEM. CALLED CHEVY CONSUMER LINE AND THEY GAVE THE OLD LINE OF YOUR CAR IS NOT UNDER WARRANTY AND CLAIMED THEY HAD NO HISTORY OF COMPLAINTS. *TR
NHTSA ODI #10340825
48,383 miles · Jun 29, 2010
Engine And Engine Cooling
I HAVE JUST OVER48,000 THOUSAND MILES ON MY 2005 CHEVY AVEO HATCHBACK. THE THERMOSTAT HOUSING UNIT ON THIS VEHICLE IS MADE OUT OF PLASTIC. OVER TIME IT WILL WEAR DOWN, AND EVENTUALLY CRACK. AS A RESULT, THE ENGINE COOLANT WILL LEAK OUT AND YOUR ENGINE WILL OVERHEAT. IT IS NOT PART OF THE POWER TRAIN WARRANTY COVERAGE AND WITH T…
Read full complaint
I HAVE JUST OVER48,000 THOUSAND MILES ON MY 2005 CHEVY AVEO HATCHBACK. THE THERMOSTAT HOUSING UNIT ON THIS VEHICLE IS MADE OUT OF PLASTIC. OVER TIME IT WILL WEAR DOWN, AND EVENTUALLY CRACK. AS A RESULT, THE ENGINE COOLANT WILL LEAK OUT AND YOUR ENGINE WILL OVERHEAT. IT IS NOT PART OF THE POWER TRAIN WARRANTY COVERAGE AND WITH TAX THE REPAIR RAN $312 DOLLARS. THIS IS FOR A DESIGN ISSUE WITH USING HARDWARE WITH A PLASTIC HOUSING. THE DEALERSHIP KNOWS THIS ISSUE EXISTS AND THAT YOU'LL HAVE TO COME IN FOR REPAIRS EVENTUALLY. LUCKILY I WASN'T ON THE FREEWAY WHEN THIS HAPPENED AND TRAVELING AT LOW ENOUGH SPEEDS TO MAKE IT HOME SAFELY. I THEN HAD THE CAR TOWED TO THE DEALERSHIP FOR REPAIRS. THE AUTOMOTIVE REPRESENTATIVE ADVISED THERE WASN'T ANY REAL WAY TO AVOID THE INCIDENT WITH ANY PREVENTIVE MAINTENANCE. I SAID IT WAS NOTHING THAT I DID WITH THE USE OF THE VEHICLE. IT WAS A MATTER OF TIMING, THE SUMMER HEAT CONDITIONS AND THE FACT THAT THE ORIGINAL THERMOSTAT COMPONENT HAS A PLASTIC HOUSING. HE STATED IT SHOULD NOT HAPPEN AGAIN AS THE REPLACEMENT THERMOSTAT WAS OF DIFFERENT CONSTRUCT AND WAS NO LONGER PLASTIC. *TR
NHTSA ODI #10340579
70,000 miles · May 6, 2010
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHILE DRIVING 50 MPH, THE THERMOSTAT FAILED AND THE VEHICLE BEGAN VIBRATING AND LUNGING FORWARD. THE CONTACT TOOK THE VEHICLE TO A LOCAL REPAIR SHOP. HE WAS ADVISED THAT THE ANTIFREEZE/COOLANT WAS SPILLING ONTO THE ENGINE, CAUSING THE VEHICLE TO VIBRATE. THE CONTACT IS CONCERNED THAT T…
Read full complaint
TL* THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHILE DRIVING 50 MPH, THE THERMOSTAT FAILED AND THE VEHICLE BEGAN VIBRATING AND LUNGING FORWARD. THE CONTACT TOOK THE VEHICLE TO A LOCAL REPAIR SHOP. HE WAS ADVISED THAT THE ANTIFREEZE/COOLANT WAS SPILLING ONTO THE ENGINE, CAUSING THE VEHICLE TO VIBRATE. THE CONTACT IS CONCERNED THAT THE FAILURE OCCURRED SINCE THE THERMOSTAT AND HOUSING WERE MADE OUT OF PLASTIC AND MOUNTED INTO THE VEHICLE WITH ADHESIVE. THE MANUFACTURER STATED THAT THERE WAS A METAL REPLACEMENT PART BEING MANUFACTURED. THE VIN WAS NOT AVAILABLE. THE FAILURE AND CURRENT MILEAGES WERE APPROXIMATELY 70,000.
NHTSA ODI #10329147
57,000 miles · May 2, 2010
Engine And Engine Cooling
DRIVING HOME FROM CHURCH AND CAR STARTED SMOKING! ONLY TO FIND OUT THAT THE THERMOSTAT HOUSING WAS BUSTED! *TR
NHTSA ODI #10328418
60,000 miles · Apr 7, 2010
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2005 CHEVROLET AVEO. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH. THERE WAS A POPPING NOISE, THE ENGINE SHUT OFF AND THE ELECTRICAL SYSTEM REMAINED ON. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE FAILURE WAS CONTRIBUTED TO A SHATTERED TIMING PULLEY; HOWEVER, THE VEHICLE WAS…
Read full complaint
TL*THE CONTACT OWNS A 2005 CHEVROLET AVEO. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH. THERE WAS A POPPING NOISE, THE ENGINE SHUT OFF AND THE ELECTRICAL SYSTEM REMAINED ON. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE FAILURE WAS CONTRIBUTED TO A SHATTERED TIMING PULLEY; HOWEVER, THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER. THE VEHICLE WAS NOT REPAIRED WHEN THE COMPLAINT WAS FILED. THE FAILURE AND CURRENT MILEAGES WERE 60,000.
NHTSA ODI #10324177
25,960 miles · Feb 10, 2010
Engine And Engine Cooling
WE WERE DRIVING ALONG IN THE DEAD OF WINTER AND NOTICED THERE WAS NO HEAT. WE HOOKED IT UP TO A CODE READER AND IT CAME UP P0128 A THERMOSTAT HOUSING FAULT. BROUGHT IT IN TO GET CHECKED AND IT IS THE THERMOSTAT HOUSING AND THE SERVICE CENTER EMPLOYEES ALL KNEW THIS A KNOWN FAILURE ON THIS VEHICLE. THE OUT OF POCKET COST 160.00 …
Read full complaint
WE WERE DRIVING ALONG IN THE DEAD OF WINTER AND NOTICED THERE WAS NO HEAT. WE HOOKED IT UP TO A CODE READER AND IT CAME UP P0128 A THERMOSTAT HOUSING FAULT. BROUGHT IT IN TO GET CHECKED AND IT IS THE THERMOSTAT HOUSING AND THE SERVICE CENTER EMPLOYEES ALL KNEW THIS A KNOWN FAILURE ON THIS VEHICLE. THE OUT OF POCKET COST 160.00 FOR PART ONLY FROM CHEVY NOT INCLUDING LABOR. THE NEW ONE IS METAL NOT PLASTIC LIKE THE ONE THAT ROLLED OUT OF THE FACTORY, SO THIS MUST BE A CONSUMER PAID RECALL. WHICH SHOULD BE AGAINST THE LAW. IF YOU MAKE A FAULTY PART THAT FAILS YOU SHOULD PAY FOR IT. JUST ASK TOYOTA, THEY ARE. *TR
NHTSA ODI #10308344
50,000 miles · Dec 30, 2009
Engine And Engine Cooling
THE CLOCK ON MY 2005 CHEVY AVEO DOES NOT WORK CONTINUOUSLY. SOMETIMES THE DISPLAY WORKS AND SOMETIMES IT DOES NOT. AS FOR SAFETY ISSUES, THE PLASTIC THERMOSTAT HOUSING BROKE WHILE DRIVING DOWN THE ROAD LAST WEEK. AFTER PRICING REPLACEMENT PLASTIC PARTS, WE OPTED TO PURCHASE THE METAL ONE, WHICH CAN ONLY BE PURCHASED FROM THE DEA…
Read full complaint
THE CLOCK ON MY 2005 CHEVY AVEO DOES NOT WORK CONTINUOUSLY. SOMETIMES THE DISPLAY WORKS AND SOMETIMES IT DOES NOT. AS FOR SAFETY ISSUES, THE PLASTIC THERMOSTAT HOUSING BROKE WHILE DRIVING DOWN THE ROAD LAST WEEK. AFTER PRICING REPLACEMENT PLASTIC PARTS, WE OPTED TO PURCHASE THE METAL ONE, WHICH CAN ONLY BE PURCHASED FROM THE DEALER AND WHICH IS MORE THAN TWICE THE PRICE OF THE PLASTIC ONES. WE STILL HAD A LEAK, SO WE CALLED A LOCAL NAPA STORE AND PURCHASED A GASKET FOR UNDER $2. AFTER REMOVING AND THEN ATTEMPTING TO REPLACE THE PART AGAIN, ONE OF THE BOLT HOLES BROKE OFF. ISN'T THE METAL SUPPOSED TO BE MORE DURABLE? ALL THIS HAS HAPPENED IN LESS THAN A WEEK AND THE DEALER REFUSES TO STAND BEHIND THE PART. NOT ONLY WAS THE PLASTIC PIECE SHODDY, SO IS THE METAL ONE AND SO IS CHEVROLET'S CUSTOMER SERVICE. *TR
NHTSA ODI #10297504
85,000 miles · Dec 15, 2009
Engine And Engine CoolingPower Train
TL* THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHILE DRIVING THE VEHICLES ENGINE WAS BECAME HOT. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR FACILITY FOR INSPECTION. THE TECHNICIAN REPLACED THE MAIN COMPUTER. THE CURRENT AND FAILURE MILEAGES WERE 85000. UPDATED 01/05/10. *LJ THE CONSUMER STATED THE VEHICLE WAS MANUFACTURED WITH A PLA…
Read full complaint
TL* THE CONTACT OWNS A 2005 CHEVROLET AVEO. WHILE DRIVING THE VEHICLES ENGINE WAS BECAME HOT. THE VEHICLE WAS TAKEN TO A LOCAL REPAIR FACILITY FOR INSPECTION. THE TECHNICIAN REPLACED THE MAIN COMPUTER. THE CURRENT AND FAILURE MILEAGES WERE 85000. UPDATED 01/05/10. *LJ THE CONSUMER STATED THE VEHICLE WAS MANUFACTURED WITH A PLASTIC TEMPERATURE HOUSING WHICH EVENTUALLY MELTED DUE TO EXTREME HEAT IN TEXAS, WHICH CAUSED THE VEHICLE TO GET HOT AND THE ENGINE TO BURN UP. THE ENGINE AND COMPUTER WERE REPLACED. AFTER 2 MONTHS OF DRIVING, THE TRANSMISSION FAILED. UPDATED 01/07/10.*JB
NHTSA ODI #10295792
92,256 miles · Nov 1, 2009
Electrical SystemEngine And Engine CoolingExterior LightingFire
CAR TYPE: 2005 CHEVY AVEO PROBLEMS I HAVE HAD WITH THIS CAR; 1. OXYGEN SENSOR NEEDED REPLACEMENT BY 41,XXX MILES 2. AT 82,XXX MI. WIRING PROBLEMS IN FUSE BOX WIRES CAME LOOSE (POSSIBLY A FIRE HAZARD) BURNT THE WIRING HARNESS. (CHAR MARKS ON THE WIRING HARNESS) CAUSED THE INTERIOR (INSTRUMENT CLUSTER PANEL) AND EXTERIOR …
Read full complaint
CAR TYPE: 2005 CHEVY AVEO PROBLEMS I HAVE HAD WITH THIS CAR; 1. OXYGEN SENSOR NEEDED REPLACEMENT BY 41,XXX MILES 2. AT 82,XXX MI. WIRING PROBLEMS IN FUSE BOX WIRES CAME LOOSE (POSSIBLY A FIRE HAZARD) BURNT THE WIRING HARNESS. (CHAR MARKS ON THE WIRING HARNESS) CAUSED THE INTERIOR (INSTRUMENT CLUSTER PANEL) AND EXTERIOR LIGHTS (DAYTIME RUNNING LIGHTS)(YELLOW LOWBEAMS THAT CONTROL TURN SIGNAL) TO TURN OFF WHILE DRIVING THE VEHICLE DURING THE NIGHT TIME. FIX COST ME $125.00 PLUS TAX 8.25% THIS ISN'T THE FIRST TIME I'VE HEARD OF THIS HAPPENING IN FACT ITS ON MANY ONLINE FORUMS AS HAPPENING TO SEVERAL OTHER PEOPLE. 3. AT 92,XXX MILES. THERMOSTAT HOUSING CRACKED IN THE CENTER WHERE THE THERMOSTAT IS LOCATED AT (THERMOSTAT HOUSING IS PLASTIC) VERY CHEAPLY MADE. NO PARTS HOUSES CARRY THIS ITEM. ITS A GM PART. GOT STRANDED 44 MILES FROM HOME AND HAD TO GET A TOW TRUCK TO BRING CAR HOME. COST; $115.00 + TAX CORRECTIONS MADE TO VEHICLE; 1. PURCHASED A NEW OXYGEN SENSOR FOR ABOUT $120.00 2. TAKEN ELECTRICAL PROBLEM TO A SHOP AND HAD THE SHOP FIX IT FOR 125.00 +TAX 3. PROBLEM STILL PENDING. PARTS NOT AVAILABLE AT PART HOUSES I.E. AUTOZONE O'REILEYS A-LINE, ADVANCED AUTO, ETC....I BELIEVE PARTS HOUSES DO NOT WISH TO CARRY THESE PARTS. PART IS TOO CHEAPLY MADE FOR THEM TO CARRY I BELIEVE THE PART SHOULD HAVE BEEN MADE OUT OF METAL.(STEEL, ALUMINUM. ETC....) PROPERTY DAMAGE: DAMAGE TO WIRING HARNESS IN VEHICLE CHEVY AVEO FIRE: BURNT WIRING HARNESS IN VEHICLE, WIRES HAD TO BE SOLDERED FROM A SEPARATE LOCALITY IN ENGINE COMPARTMENT. *TR
NHTSA ODI #10290536
44,000 miles · Oct 23, 2009
Engine And Engine Cooling
IT JUST COST ME $178 TO REPLACE THE CHEAP, SHOULD'VE BEEN RECALLED THERMOSTAT HOUSING. NOW 3 DAYS LATER MY TIMING BELT, SERPENTINE BELT AND TENSION PULLEY BROKE THAT IS GOING TO COST ME $500 TO FIX. GM DOES NOT WANT TO SEEM TO TAKE ANY RESPONSIBILITY FOR THE UNSAFE VEHICLE THEY SOLD ME. THERE ARE MANY, MANY, MANY COMPLAINTS ON…
Read full complaint
IT JUST COST ME $178 TO REPLACE THE CHEAP, SHOULD'VE BEEN RECALLED THERMOSTAT HOUSING. NOW 3 DAYS LATER MY TIMING BELT, SERPENTINE BELT AND TENSION PULLEY BROKE THAT IS GOING TO COST ME $500 TO FIX. GM DOES NOT WANT TO SEEM TO TAKE ANY RESPONSIBILITY FOR THE UNSAFE VEHICLE THEY SOLD ME. THERE ARE MANY, MANY, MANY COMPLAINTS ON LINE OF OTHER 2005 CHEVY AVEO OWNERS. I INTEND TO GET AN ATTORNEY AND SUE GM. I HAVE A 7 YEAR OLD GRANDSON WHO WAS IN THE CAR WITH ME WHEN IT BROKE DOWN. THIS IS TWICE IN ONE MONTH THAT THINGS HAVE BROKEN ON THIS CAR. I AM ALSO LOOKING INTO THE LEMON LAW. SHAME ON GM. *TR
NHTSA ODI #10289480
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