Took my Canyon in for free oil change and mentioned a transmission shudder. Service writer was familiar with the problem and said there was TSB on the problem that corrected it with a transmission flush and different ATF. Picked up the truck and the shudder was gone.
I have to say, very smooth purchase with no hassle at all, everyone I dealt with during the purchase of my truck were very professional. I would recommend anyone in the market to buy a truck check here first.