There are 6 owner-reported fuel system complaints for the 2006 Chevrolet Impalain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
A COUPLE DAYS AGO ON JANUARY 5TH, MY CAR STARTED TAKING A SECOND LONGER THAN NORMAL TO START UP AFTER SITTING FOR HOURS AT A TIME BUT WHEN I SHUT IT OFF IMMEDIATELY AND WAIT ABOUT 3 TO 5 SECONDS TO START IT, IT STARTS PERFECTLY FINE. I HAVE BETWEEN 148,000 AND 149,900 MILES AND I'VE HAD IT FOR THREE YEARS AND THIS IS THE FIRST TIME IT HAPPENED.
TL* THE CONTACT OWNS A 2006 CHEVROLET IMPALA. THE CONTACT STATED THAT THE VEHICLE HESITATED TO ACCELERATE AND DECELERATED WHILE ON THE HIGHWAY. THE DEALER REPLACED THE FUEL INJECTOR, THROTTLE BODY AND REPROGRAMMED THE COMPUTER, BUT THE FAILURE RECURRED. THE VEHICLE WAS NOT REPAIRED A SECOND TIME. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 98,000 AND THE CURRENT MILEAGE WAS 106,000. THE VIN WAS UNAVAILABLE.
I HAVE A 2006 CHEVROLET IMPALA. THE GAS PEDAL SENSOR FAILED WHILE DRIVING AT HIGHWAY SPEED, CAUSING A LOSS OF POWER TO THE ENGINE. THE PART IS GM25830023. I HAVE HAD THIS TO A CHEVROLET DEALER TO HAVE FIXED, BUT THE PART IS UNAVAILABLE FROM GM. ACCORDING TO THE DEALER, THIS IS A COMMON PROBLEM AND THEY HAVE 2 OTHER IMPALAS WAITING FOR THE PART AS WELL. I HAVE BEEN UNABLE TO USE MY CAR SINCE APRIL 14TH. *TR
MY COMPLAINT PROBABLY DOES NOT WARRANT A RECALL, BUT SHOULD BE HANDLED BY CONSUMER NOTIFICATION. MY 2006 CHEVY IMPALA HAS DEVELOPED A FUEL RELATED PROBLEM THAT CAUSES THE CHECK ENGINE LIGHT TO ACTIVATE. THIS IS CAUSED BY THE USE OF E-85 FUEL. THE COMPUTER DETECTS HIGH ALCOHOL CONTENT IN THE FUEL. THE DEALER WAS ABLE TO SOLVE THE PROBLEM WITH BOTH A SOFTWARE UPDATE AND BY FLUSHING OUT THE E-85 FROM THE FUEL SYSTEM AND RESETTING THE COMPUTER. THE CAUSE OF THIS PROBLEM WAS LACK OF PROPER INSTRUCTION, FROM THE DEALER, IN THE USE OF E-85. I HAVE BEEN INSTRUCTED THAT AFTER FILLING THE GAS TANK WITH E-85, THE VEHICLE MUST BE DRIVEN A MINIMUM OF 11 MILES, BEFORE SHUTTING OFF THE ENGINE. THIS GIVES THE SENSOR IN THE FUEL SYSTEM SUFFICIENT TIME TO ADJUST TO THE FUEL. THIS NEEDS TO BE DONE EVERY TIME THE VEHICLE IS SWITCHED FROM CONVENTIONAL E-10 GAS, TO E-85. I WAS UNAWARE OF THIS PROCEDURE, UNTIL AFTER THE PROBLEM HAD OCCURRED. GM SHOULD NOTIFY ALL CONSUMERS WHO HAVE PURCHASED 2006 AND 2007 VEHICLES EQUIPPED WITH FLEX-FUEL ENGINES OF THIS REQUIREMENT. AFTER THE PROBLEM OCCURS, THE DEALER NEEDS TO PERFORM THE RESET PROCEDURE FOR THE FUEL COMPUTER. THIS PROCEDURE REQUIRES APPROXIMATELY THREE HOURS. IT IS NOT A SERIOUS DEFECT, BUT IT IS UNNECESSARY. THE DEALERS SHOULD INFORM CUSTOMERS, WHEN THE VEHICLES ARE DELIVERED, OF THIS PROCEDURE. *JB
DT*: THE CONTACT STATED AN OBJECT WAS DRAGGING UNDER THE VEHICLE. AN INDEPENDENT REPAIR SHOP DETERMINED THREE OF THE FOUR PLASTIC CLIPS THAT HELD ON THE HEAT SHIELD WERE MISSING. THE REPAIR SHOP MADE A TEMPORARY FIX WITH PLASTIC TIES. THE VEHICLE WAS TAKEN TO THE DEALERSHIP WHO REPLACED THE HEAT SHIELD AND FUEL TANK. *AK
THE GAS CAPS OF 2006 CHEVROLET IMPALAS HAVE A DESIGN DEFECT IN THE GAS CAPS WHICH ALLOW FOR THE CAP TO FAIL AND THE EVAP SOLENOID TO FAIL. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026