Quote Originally Posted by brian617 View Post
If you are measuring the resistance between yellow/blk 2-3 and lt green 1-2 at the PCM plug you will see the combined resistance of both shift solenoids as they share a common voltage source.
I see 0 ohms at the pcm plug. For some reason the pcm is not grounding the solenoids. Do you think it could be a faulty pcm? It looks like the pcm was already replaced with a used one by the previous owner because it has 95 hummer written on a sticker. It can i think only be one of two things and that is the solenoids themselves or the pcm at this point.