If your State or locality (in Arizona we have two "localities" - Tucson and Phoenix) requires an emissions inspection, you'll know about it. If you've never heard of this inspection, I doubt it's required where you live.
I wonder if I'm the only one who doesn't seem to get the
P1000 code when I switch back to stock though? I ALWAYS put the truck back to stock whenever I take it in for service, even an oil change, and I've NEVER seen the
P1000 (or any other code).
- Jack