Took the Yukon to a local muffler shop to get a hole in the exhaust fixed. Never been there before, but they seem decent and the Google reviews are great. While I was there, I discovered that they are a full-service shop, not just mufflers. Great, nice to have a local indie for stuff instead of having to go to the dealer.
But then I saw the sign on the wall: Shop Rate $130/hr. Huh, pretty sure that's the same as the dealer.
So I asked them to give me a quote on a couple of leaking/weeping oil lines that I'll need to deal with sooner or later. Their quote was $1,570 vs $1,450 from the GM dealer. Guess I'll just stick with the dealer.