The following is what they stated on their website.
"When you become an AAMCO customer, you're entitled to a Warranty that
matches the quality of the service that you receive. So when it comes to Warranties... bigger isn't just better, it's the best! And nobody has more centers throughout the U.S. and Canada than AAMCO. Each center stands behind your Warranty, committed to giving you prompt, courteous warranty service, should you ever need it.''