New to Chevys in general. Just picked up a 1998 Tahoe 4door lt with over 200k on it. I noticed the stock Billistein shocks(i checked the vin for options) were still on the truck. Is there anyway they are still good. I did not see any visible signs of oil leaks or rust. The ride seems ok, its my first Tahoe and I'm assuming most of the suspension bushing are bad so I'm really not sure how to tell if the shocks are bad. Any help will be much appreciated.