Yes, absolutely. OBD1 and 2 are both capable of live sensor data output and lots of other cool stuff. You just need a capable scan tool.
As Schurkey mentioned, you don't necessarily need a fancy new scan tool. I bought a Chinese clone of a GM Tech 2, which was the diagnostic tool used at GM dealerships when these trucks were new (and the tool that the GM factory service manuals were written around). They've been replaced by newer tools now so they won't work with brand new vehicles, but they'll do anything GM from 1991-2013. Unfortunately the Chinese Tech 2 clones are getting tough to find at reasonable prices, and authentic Tech 2s can be over $1K (and very difficult to distinguish from the clones). I'm sure others can give you some good advice on other high quality older scan tools to look out for though. IIRC Snap-On has some nice older models that you can find used for a few hundred bucks.
I did not know that, good to know. Thank you.
What's a good price for a scanner, like ballpark? I know theres a differnce between "too cheap, dont buy", and a good deal.
I've heard Harbor freight sells scanners, and I have one of those in my town. Would one of those work?
I have a hard time ordering things on line, because I don't have a computer or internet, and I dont trust my old phonesecurity, so I have to either do things in person, or have a buddy order it for me on his.
And I have a hard time buying a tool for my truck that cost me more than my truck, and all my 90s chevys have cost me less than 500$ each, haha.
