Engine light on-diagnosis P0455. Last 2yrs took to many repair shops. Replaced, gas cap, purge valve, canister valve, charcoal canister. Took to Chevy. They replaced purge valve because they said other mechanics used non Chevy parts. Engine light came back on. Chevy did smoke test and swore it was the fuel sensor cost $1200+. engine light back on after a week. Another smoke test and now pressure test blew a small section of fuel tank where it now leaks. Chevy said the seal most likely not seated properly and I need a new fuel tank about $1000. But they can't guarantee this is the cause of the engine light. I can't afford another $1000 especially if this doesnt solve the problem. Already spent thousands fixing different parts. Vehicle gets about 12mpg and has in the past lost power while driving as if not enough fuel is getting through but that hasnt happened in some time. Wonder if anyone else having this P0455 issue?

- Republic, MO, USA

Fuel level sensor failed causing fuel transfer pump to overfill front fuel tank. Causing front fuel tank to expand and develop a fuel leak.

- Nashport, OH, USA

From 2017-present engine light is on and has code P0455. While driving down the road vehicle drives a bit rough and on at least 8 occasions it has lost power while driving down the road. Almost feels like its going to shut off. Three smoke tests were done, one at a Chevrolet dealer in 2017. So far auto repair shops have replaced 1)gas cap, 2) purge valve 4 times, 3) fuel sensor above fuel tank and we diy replaced carbon canister and vent valve solenoid. Still the problem persists.

- Republic, MO, USA

Engine light on vehicle runs rough/sputters while going down road. Took to 3 mechanics including GM dealer. All stated emissions codes. 1st mechanic replaced purge valve. Light came back on. Same mechanic did smoke test and replaced purge valve stating it must have been faulty. Light came back on. Chevy dealer replaced purge valve. Light came back on. Last mechanic replaced fuel sensor. Light came back on and they stated it now needs a purge valve. In addition, dash stability light comes on but does not go of when button pushed. Dvd player also seems to be constantly whirring. However, main concern is still the engine light that no one seems to know how to fix after I've spent over $1K for several purge valves, smoke test and fuel sensor. These problems ongoing for over a year and no one is able to resolve!

- Republic, MO, USA

Fuel leak has developed between two fuel lines that have been rubbing together from the date of manufacture until 4/23/18. This leak developed less than inches from the exhaust system on the braded line portion of the fuel lines near the connections at the fuel tank end. The issue was noticed as I was driving in rush hour bumper to bumper traffic on 395 North in Washington DC through the 3rd St. Tunnel. The odor of gasoline was detected, but thought to be coming from elsewhere. The vehicle was driven another mile before I realized the source was my vehicle. When I parked it I noticed fuel pooling under it at the transmission cross member. After it cooled, I went under it and discovered to cause of the leak. The vehicle was towed home via aaa. The mileage at the moment cannot be obtained because the dash is digital which causes the fuel system to energize and spray fuel when turned on.

- Indian Head, MD, USA

Engine idling low, hesitant at low speeds. Changed gas, no change in how the truck was running. Engine light came on, took to dealership. Replaced spark plug that was misfiring due to oil contamination. Cleaned fuel injectors and throttle body, replaced valve cover to prevent this from occurring a third time (has happened twice already and in the last nine months). Total repair $1173. Not covered by warranty.

- Frankfort, IL, USA

The accelerator hesitates when pressed. The car does not move and will then accelerate rapidly when at a stop and trying to accelerate through intersections. Dealer could not duplicate for repairs. Recurring issue. Also has a popping or clunking noise in back passenger side. Dealer has duplicated but not repaired.

- Saginaw, MN, USA