Thanks for the help. I eneded up having it towed to the dealership. They re-flashed the stock programming in the truck and now the Trinity needs to go back since the screen is broken (thanks to someone shoving it in her purse!!)

Thanks again guys love the product!

I have a 2007 classic GMC Sierra 2500 with Duramax. I backed out of my tune to "update" my trinity so I followed the "restore factory tune" instructions as I always have BUT I am now getting a "Unable to communicate with ECM" error code on the trinity. I can't even start my truck now!!!
HELP needed ...

I've had my Trinity plugged into my 07 classic duramax for weeks without it ever draining the batteries

I've had my Trinity installed in 07' classic duramax for over 3 years and NEVER had it drain my batteries and I've left it installed and connected for weeks at a time w/out starting my truck.