Quote Originally Posted by KrisDC2 View Post
I bough a used TCM for my '13 Duramax. I was able to pull the stock file off my old TCM but I need someone with FlashScan to upload it and send it back to me so I can reflash it with my stock file and VIN number so GM Tech2 will program it. Tech2 will not program used TCM's anymore.

Is there anyone that can help me out?
I hope that you purchased a KNOWN working "used" TCM. The nightmare that is the GM supply chain has put a lot of bad used tcm's into the hands of unscrupulous scammers. The TCM in this truck is the most vulnerable component in the truck, mounted on the hottest spot of the engine compartment with no airflow. With the supplier shelves now completely empty, this appears to becoming a major industry event, leaving perhaps thousands of these trucks stuck in driveways, as GM works to find a new supplier. This could take months, or longer.