This software isn't just another code puller. Its power lies in its diagnostic depth:
If you're interested in learning more about the GM Mode 22 scan tool or want to purchase one, here are some additional resources to check out: gm mode 22 scan tool by terry
You cannot access Mode 22 with a $20 code reader. Terry recommends: This software isn't just another code puller
For the price of a USB ALDL cable (around $40-60), you can have dealer-level diagnostics from the early 1990s. Terry may not have a corporation or a tech support line, but his Mode 22 scan tool has kept more vintage GMs on the road than any dealership recall. Download it, connect it, and finally see what your old GM is really thinking. gm mode 22 scan tool by terry
