I just bought a 98 2dr Tahoe, now here's my situation. It has a 3in body lift, I installed the motor and transmission along with the computer, harness and connectors. I also replaced all sensors, pnps, starter, new battery, etc. Now when I go to crank it, it doesn't do anything but it has power. I test for continuity and voltage from the crank fuse, starter relay and wiring and it checks out good. I also checked for ground at the battery, engine, body, and pcm and it shows. Forgot to mention I installed a new ignition switch as well, no luck. I can jump the relay and it cranks over as well from the starter itself but won't start. Sprayed starter fluid no spark. Connect scanner and it says unable to communicate turn key on BUT THE KEY IS ON, smh. I'm stumped. Can someone here help me out I'm ready to drive. Oh it's a non chipped key it that help.