Ok here we go. First mistake is I bought this 2003 trailblazer that needed a transmission with the transmission already removed and the owners word that the tranny was the only problem. The transmission has been replaced but the vehicle will not start. It doesn't crank or anything. I have no ground at the starter relay coming from the PCM when attempting to start the vehicle. I tried a different PCM but the same problem persists. Someone please help. :-)