ricoriverausmc

My truck is turning off for example when im slowly pulling out of a parking spot or backing in that the only time the truck shuts off. I replaced the EGR valve i thought it would be that since the previous owner had it unplugged. I like to have my stuff working in proper order so this is irritating. before i take it to a mechanic i wanted to see if this is something i could fix if anybody has any suggestion or tips i truly appreciate it. thank you