01 Denali XL 140k
Truck Runs great but decided to do a Seafoam treatment just to get some carbon buildup out. Not a whole lot of white smoke but I guess that's a good sign unless I did it wrong =(
Actually wouldn't start the first time, and second time it cranked for a couple seconds, I don't know if that's normal or not. Truck always starts the first time.
You Tube link of the little bit of Smoke Coming out:
http://www.youtube.com/watch?v=cBUDpZJwC1I
Not bad. Where are you putting the seafoam? Just curious.