chevy express 2500 5.7February 2, 2015Van idles ok but when I try to drive just lurches forward. No power Keywords:expressexpress van 1 thought on “chevy express 2500 5.7” Freeautomechanic February 2, 2015 at 11:59 am Check for any check engine light codes first. Does this also happen in reverse? or if gear selector is put in a lower gear. Check your Park brake as it may be sticking. does engine rev up and van won’t go? engine bogs? Comments are closed.