Too bad you don't have a Ferd. You can download ForScan for free, and buy an ELM327 OBD bluetooth adapter for under $20. I don't know if there's an equivalent GM scan tool, but I wouldn't be surprised.

Check this out. But most of the cheapies only support true OBD2 vehicles, and some modern vehicles (like my 7.3L) require extended diagnostics beyond OBD2.

Last edited by klhansen; 09/23/2024 6:46 PM. Reason: added link
Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.