Rebuilt means that the ECU is tested on a bench and all of the internal parts
that need to be replaced are replaced.  Then they are tested in a Vanagon to
be sure that they work properly.  They have a one year warranty.  Hope this
answers your questions.

Thanks,
Ken Wilford
John 3:16
www.vanagain.com
Phone: (856)-765-1583
Fax: (856)-327-2242