stryped wrote:
I have been thinking of buying one of those code readers and wondered
if it would diagnose why my ABS light is on in my truck or if that
requires another type of reader?

ABS is not included in the OBD2 spec.
Some high-end readers will give you ABS and airbag codes on some
vehicles. And some require a separate reader. You just have to shop.
Actron makes two separate scanners.
But many manufacturers withhold that information for their own service
bays.