Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello and thank you for your question,When you say you have no selector are you saying the Selector is blank?Dose the engine not crank?
So this all started after the pan gasket was replaced?Have you scanned the computer system for any fault codes?
There is one Ground that can affect these systems that you need to check. The ground is the G111 that connects to the bell hosing just above the starter. Check it and se if its clean and tight . Let me know what you find and we can work from there if need be.
So I assume its in place and tight correct. Is the PRNDL blank?
Okay lets start with checking this system first. See the steps in the link below, Run these steps and let me know the results.https://dl.dropboxusercontent.com/u/104923897/PRNDL%20Jul%2026.pdf
The one other thing that all of these system share is the BCM, was it disturbed at all during this repair?
In most cases if the BCM has a problem it will set a fault code.Unfortunately I suspect something is loose here but I do not think Im going to be able to fix this from here. I will open the post back up for you and perhaps someone else may have something to offer.