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Gary, ASE Certified Technician
Category: GMC
Satisfied Customers: 16893
Experience:  GCM master tech over 25 years
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I have a 2004 envoy when I get gas the car is hard to start

Customer Question

I have a 2004 envoy when I get gas the car is hard to start and then runs rough for a short time what do you think
Submitted: 1 year ago.
Category: GMC
Expert:  Gary replied 1 year ago.

I am sorry for the long wait

99 % of these that will act up only when fuel is added is an issue with the fuel pump modules in the tank with either the pump failing or the return/vent part of the pump assembly bad and it actually allowing fuel into the vapor hoses in the tank and causing this problem

usually replacing the fuel pump module assembly in the fuel tank corrects this type of issue

Expert:  Gary replied 1 year ago.

how are you making out ?

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