Cnadianff

I have a 2015 Sierra Denali that had the famous transmission shudder. I did the $1000 transmission flush as well as the shifts firmed up through a tune at GM. I want to put my Bully Dog GT back in so I have a few questions. 1. If I install the Bully Dog back in and I don't like it and I uninstall it back to the stock tune is the stock tune the one that has the shifts firmed up or does it program a generic 2015 GM stock tune? 2. If I install the Bully Dog tune as usual does it touch the area that GM programmed to firm up my shifts? Thanks in advance Ross

Love the tires and wheels on that color!

Thanks vballdust. 6"suspension 3" body.

Here is my Black 2015 Denali Mods so far: 6" suspension lift, 3" body lift, AMP power steps, 37' tires on stock rims, Full Armour Guard on undercarriage and box. Other than that she is pretty stock. Love her so far.