2015 gmc sierra & chevys

[ronniem]

I have a 13 tundra and the 4x4 flex fuel engines have known issues with the computers thinking they are running E85 fuel even when you dont. This causes them to run very rich, hard to start and crappy fuel eco.
I dont think any manufactor makes them like they used to is the most accurate statement.

[PUREBAY2200]

Originally Posted by ronniem

I have a 13 tundra and the 4x4 flex fuel engines have known issues with the computers thinking they are running E85 fuel even when you dont. This causes them to run very rich, hard to start and crappy fuel eco.
I dont think any manufactor makes them like they used to is the most accurate statement.

Fuel flex on any engine sucks
End of story