Fuel tank 15-21 Colorado v6 (vacuum code?)
Is there a vacuum code associated with the current trucks gas tank?
I want to add an auxiliary fuel tank and would plumb the pump to fill the oem tank through the gas filler.
Since the trucks don?t have a gas cap, but a flapper, I?m hoping to not have any codes thrown.
I have read that other current trucks with gas caps (Fords Tacoma?s Silverado?s etc) will through a code and I think it had to do with vacuum in the charcoal canister etc.
If it does throw the code any ideas on how to fix things so there isn?t a problem. Not just turning the code off?
Plumb the new fuel cell vent line to the oem vacuum side?