hey same boat here. i called matts caddy shack in el cajon. got an appointment, waited 3 weeks, the night before i called to verify... they had my service wrong, and then told me it would be 3 weeks until they even looked at my car once i dropped it off. like, 6 weeks bro?
anyway i passed on it. im looking for a gm mechanic in sd again too. i have a lot i can do myself, but i need some bigger work done