why does my engine load up after getting fuel on 2004 Chevrolet Express 2500

also does the same thing when backing in a steep drive way it happens intermittentley i can clear it out by revving the engine

by in Sayville, NY on May 04, 2012
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1 answer 1 comment
ANSWER by , May 04, 2012
Most likely the fuel pump pump is going bad. Will need to check pressure and volume. They go bad right around 100k.
COMMENT by , August 21, 2015
I found that to be the EVAP Purge Control Solenoid located at the throttle body. Everytime i filled up with gas van didn't want to start. This fixed it.