So those are the differences: a Dealership, a quick Lube Shop or doing it yourself. A GM/Chevy Dealership will perform the required inspections, and the oil change, perhaps rotate the tires, perform warranty or recall repairs, and maybe run your vehicle through their carwash.
Taking it to a corner Lube Shop is a lot more like doing it yourself: my understanding is that these do not perform the inspections that a dealership will do, just as I don't do the inspections either.
So I usually will take a rather new vehicle to a dealership every time, while the vehicle is still on warranty. After that, I do the oil changes myself ... or sometimes take it to a quick lube shop if I don't want the hassle. This is regarding the trucks that I have owned. On my 2011 truck I also did things like replacing the four exhaust O2 sensors. And honestly, after warranty work done in the first 5 years at dealerships, in over 120,000 miles that was all it needed: Oil Changes, tire rotations and O2 sensors. Didn't need coolant flush, light bulb replacements, water pump replacements ... nothing. That is why I stick with Chevy.
For the Corvette, it's a totally different story. I have tried taking this vehicle to the dealer, a VERY reputable GM dealership. They cannot mount tires on the rims nor balance the tires & wheels; they admitted they don't really know much about the car; and for work they might agree to do, they want to charge about THREE TIMES what a Corvette shop charges. So I (and apparently the two previous owners) perform ALL necessary inspection, maintenance and repair myself. Fortunately, it's actually enjoyable and worthwhile. And familiarity can lead to Hot Rod Mods ...
