I don't have to wash my company ride this weekend. The nice blokes at the GM dealer did it for me...
Course... I did let them do $1200 worth of work to it!!!
Discovered what that vibration I was feeling was... Both engine mounts were shot, and the tranny mount was cracked!
Oh and all the brakes were about toast too, something about that towing a trailer all the time with a midsize SUV means it eats brakes.