Personally I would be reluctant to buy a C8 in the first year of this new generation. GM has a history of screwing up when they implement a new model. I would consider the first year of any new generation as being a beta test model.
As for the C7, did they ever get the automatic transmission problems straightened out?
But then again, the main reason I sold the 2009 C6Z was because of the cylinder head problems noted on the LS7 caused by machining errors on those heads made in Mexico. GM wasn't owning up to it, so basically it was a crap shoot whether or not your LS7 might drop a valve into a cylinder, ruining your day. So screw that. I traded it in on the Grand Cherokee Trailhawk and moved on.
Of course, no vehicle or brand of vehicles is going to be perfect and problem free. But I just haven't had much luck with the results I have gotten from any Chevy dealership's service department. So I have been soured, to say the least.
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