ok.......i was driving home a couple of days ago and my 1999 chevy suburban shut off while i was towing my uncle's s10 home. I tried to restart it but nothing.......i replaced the fuel pump in the housing with one from the junkyard.tested it and it worked but the truck still didn't start.........i have spark/fire but it just spins over....can someone help? by the way the s10 i was towing was a 1996 that starts up but when its put in gear it shuts off......can i get some help with that one a well?