Is there a "AAA" for big trucks? A number you can call that has a directory of approved repair companies that can help you out in a pinch?

Check out the ATA http://www.amtowa.com/clientbenefits.htm

I don't know if OOIDA has anything or not.

Well my company offers sort of a "AAA" for big trucks..if you are ever in Louisiana, Mississippi, or even Texas...we will come out to your rig and fix whatever the problem is....If you want more info...you can email us...