Can anyone recommend the best study guide for the automotive AND heavy truck sections/tests (A tests and T tests) for ASE certification? Looking for one or two large books that encompass everything rather than buying the individual books for each test section.

This is about the best I can come up with.
ASE Certification Training Guides - Motor Age

Thanks so much! Those books look absolutely perfect and exactly what I wanted! I can't thank you enough!

You're welcome. Good luck with your studies.