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Message: <blockquote data-quote="stutaeng" data-source="post: 22380" data-attributes="member: 6175">There's honestly not much that goes wrong with these vehicles actually... probably why this forum kinda died, LOL.Maybe the heater core quick connects near the firewall are something I would replace as preventative maintenance. Dorman actually started making some metal ones. I just installed them on my 04 project suburban last weekend.As far as mods? How much do you want to spend? TONS of mods. 2019 GIANT front brake upgrade from the Silverado. AXN rear axle swap. Hydroboost upgrade. 4L80e swap. Transfer case swap (HD one from a truck or maybe a manual shift one). On the engine side: tunes, stroker, cam, headers, supercharger, turbos...way too many options on that alone. LS engines are probably one of the most reliable engines ever produced. Coilovers conversion. Cognito front suspension upgrades...Maybe you should tell us what you intend to do with the truck? I would just keep with your plan and do maintenance. Also, check out TYF. Tons of information there on GMT800 SUVs.</blockquote>