Have an uncle who was involved in a crash a few years ago.His 2002 Blazer was sent to a local dealership by his insurance co. for the repairs and after he got his truck back he thinks the radiator that was replaced was not a GM item.He thinks it was a Autozone radiator.I have seen Autozone trucks coming and going to dealerships many times.Maybe one reason their delivery trucks are unmarked,having no company logo.Whatcha'think?