Oxygen sensor failed. Cost about $75 and was very easy to replace myself. Drastically improved my fuel consumption.
CV-joint boot tore at 170000km. Can happen to any older vehicle though.
Rear leaf spring broke before I purchased the truck. Cost me about $300 to buy aftermarket ones and replaced myself.
Upper and lower ball joints along with idler arm need to be replaced soon. S-10s have a history of going through a lot of these. Will cost about $600 to replace at a repair shop.
Trip counter does not work anymore. Common problem with early 90's GM's.
Paint is showing a few rust spots, but otherwise is in very good condition.
Both rear and front bumpers are not chrome so they are rusting the worst.
I have the extended cab. Being 6', I find the cab almost too small. I don't recommend having passengers in the back seats. Only enough room for some more cargo.
After replacing the oxygen sensor and spark plugs, I found that it still has lots of power.
I am able to pull small trailers quite well in 4th gear on the highway.
The ride is typical of a truck. A little bouncy for my liking sometimes.
I ran my engine out of coolant many times in my young and stupid days. Even with all the abuse, and a frequent tune ups, that little 2.4 liter cast iron engine still runs like it did the day I got it.