Hi, I just wanted to take a minute to express how happy I am with Rob at MM3tuning.com. I usually just read the forums to learn, but I just registered so I could write this post. Anyhow, I purchased my 05 a few months ago and have been getting it into shape to tow my 14k fifth wheel in the Sierras during the summer months. I wanted to keep it pretty much all stock except for air intake, and a custom tune. Well after looking at pretty much every outfit out there, I ended up purchasing Robs tune package at MM3tuning.com. All his tunes come with a trans tune included! The trans tune for the 48RE is amazing, especially for the 05 with no OD lockout button. I now have much better shift schedule, TC lock up in manual second and TC lockup in 3rd with the option to hold it there without it shifting into 4th (OD). His engine tunes are amazing as well, they are all pretty much designed for stock trucks and even has a “true 12 valve tune” which replaces the several event injection program with one big shot, this results in that awesome older 12valve sound. I can’t recommend his tunes enough especially for us 05 guys. My EGT’s, trans temps and engine temps are all way lower and no more stopping to let stuff cool off while tackling a long steep grade with 14k.