OBD2 Scanner Recommendation

That’s the issue- if you need to home an abs module or custom set adaptive on an auto transmission a plain scanner can not do that. The big money covers the rights to access priority software. So on a scanner for big truck Diesel engines. Every year You had to pay out $250 for updates for Cat, Cummins and Detroit diesel each. International was less like $180ish.
With out it you could not read and adjust the particular issues. Transmissions like Allison or Brake systems like Bendix had their own software too. Cannot fix a truck on the side of the road without them.