Fonzie

I like them. GM's been using them since... Well forever. The stroy I got is that it originated from the old buick V8 which Land Rover eventually bought the design of.

The main problem I've seen with them is leaky intake manifold gaskets, just as any of the GM's that have coolant going through the intake. I recommend changing the coolant, as the factory fill Dex-Cool is problematic, outside of a perfect world. I like the Peak branded Global extended life stuff.

I have seen a couple of those engine end up with oiling system failures, but it's not all that common. If it makes any significant rattling noises, don't mess with it.