My truck's service engine soon light came on and was driving rough so i tried the dealer first, mistake. They treated my like I was an irritant and wanted to overcharge me for diagnostics and acted like it would be a favor if they could squeeze me in--no thanks! 5 Star, where I should have gone to first, were reasonable about diagnostics, interested in my business, and did the repair too. All on a Saturday. I was treated fairly, and with professionalism by people who want my business. Well, they have it now.