I'm a newbie so forgive the poorly worded and long post. I have a 2007.5 Chevy with the D/A LTZ ext cab short bed 4x4 Z71. Had to drive from OKC to Montgomery AL for a funeral. After about 7 hours on the road, I pulled off to stay the night in Shrevport LA. As I was getting off the interstate and I felt a very hard bang and downshift. Made it to the hotel garage but now only a low gear present and the check engine light was on. Onstar said 2 trans faults and take to dealer immediately. Red River Chevy was directly across the street from the hotel. They ran diag. and said it was a "hard fault" so no easy reset. Next day it turns out it was the (I think) TCCM or transmission control module. Dealer said GM doesn't make a replacement part so the dealer took one off of a new truck on the lot to get me back on the road. No further problems. The truck had 4000 miles when it happened. BIG THANKS to Red River Chevy.

That's awesome that they swapped out a TCM for you!

But I find it hard to believe that "... GM doesn't make a replacement part ..."; how in the world are they going to fix the truck that was on the lot? Just keep stealing from truck to truck?

What I can believe is that they didn't have one in stock, and their committment to customer service outweighed the need for a working truck on the lot.