van ran fine before starter broke.just replaced starter,now van is running rough,won't idle when foots of gas. can't see any vacuum lines off or broke.sucks bad ongas mileage,9-11 mpg.could it be possible fuel filter and/or pump?
van sat for 4 months. start van runs rough,won't idle.232000 on van.fuel pump? on 2000 GMC Savana 3500
check fuel pressure a mouse might have made a home in your GMC might be chewed off wire