Hello All, I will be doing some service on a 2000 Chevy astro, I am not super familiar with vehicles that have rear wheel drive set ups, and I believe this vehicle may have some bad suspension parts, and I want to check them out while I am changing the oil. I was just curious which ball joint is load bearing, and what is the best way to check them? Also are their any other critical suspension parts to check out? When I say critical I mean something that keeps the wheel from flying off of the van? (My understanding is that these vans are Chevy trucks wtih a van body) Thanks!