2008 Yukon cutting out

[HogfanCody]

So my Yukon had the 0455 light on. I replaced the gas cap and it went out. Of course it came back on. Then it started running rough and fuel tank was pressurizing. I replaced the fuel vent canister and the two hoses. After resetting the light it has not come back on. But now it's cutting out on accelation and really bad up hills. I'm at a loss. Any ideas appreciated.

 

[bzpilot]

You might want to try posting in the 2007-2014 Tahoe/Yukon/Escalade Forum. Fuel system are quite different including no gas cap on 2015+.

 

[NathanJax]

You might want to try posting in the 2007-2014 Tahoe/Yukon/Escalade Forum. Fuel system are quite different including no gas cap on 2015+.

Moved to the correct section for him