I think there are several
I think there are several reputable dealerships out there, but unfortunately several that are not. I had my 2013 Chevy Cruz, very well taken care of, in for an oil change and the technician noticed an oil leak but didn't know where it was coming from. He wrote down 4 different possibilities on the estimate with the "fix" being to change the gasket or seals on all 4 areas. Almost $3000. I said to heck with that, and you would think there would be a puddle on my driveway...nothing. I know there must be a small leak somewhere because I can smell burning oil when I drive sometimes, nothing major. They would rather replace than diagnose.