Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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can you smell gas under the hood with the hood open ?
if you only smell the fuel inside the cab of the truck there has to be fuel seeping out just enough under the hood to cause that smell as the fresh air intake in on the top of the firewall area
with the hood open and a flash light inspecting the fuel rail and the fuel injector do any of the injectors have any brown stains on then or the fuel line on the rear of the intake manifold show any signs of a fuel leak and a very small one will smell really bad and usually there will be signs of a leak with a brownish stain visually
no it usually is not
if you smell it inside the cab especially when driving the fuel leak is firewall forward
if you only smell it in the cab at idle or under the truck towards the rear its usually firewall back
can you smell it while driving ?
there has to be a fuel leak seeping or possible small exhaust leak under the hood causing this issue
it is a matter of finding it
this can even be seeping fuel from a fuel injector or the rear fuel line next to the fire wall seeping
the 4 injectors first for any brown stains and then the rear fuel line on the back of the intake manifold near the firewall
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Do you have any other symptoms? Hard start? Have you had the code checked for the check engine light in?
I would have the check engine light looked at first. I suspect you will have an evap code which likely will correct your gas smell problem.
I suspect it is vent solenoid which is a component of evap system
Your best bet is to find a repair shop with a smoke machine and have it smoked for a leak
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