From the start, I had trust issues with my dealer. Later, I have a suspension that one time they caused a problem with my wife's KJ and then made it worse to cause a failure to cover the original mistake. I'll spare the details, but interesting enough, it even included to send in a salesman to the waiting room to try and get me to do a trade in for a new Jeep!
I ended up having another shop do the repair, which was its own set of problems (untrained mechanics).
Oh yeah, and with my Jeep, I dropped it off one day for a transmission fluid change and I noticed an additional 20 miles on it when I was driving it home. A test drive is required for a fluid change? It was right after the lift was installed and they were all buzzing around it when I picked it up. Now if I drop it off anywhere, I make them write down, "No test drives!"