Transmission

Automatic Transmission Rebuilders Association
ATRA is an international trade association for automatic transmission repair professionals.
http://www.atra.com

Automatic Transmission Service Group
ATSG is the largest, Employee-Owned, technical support service in the Automatic Transmission Industry.
http://www.atsg.com

FindATrans.com
Consumer guide to transmission repair information. Local transmission shop and price search engine.
http://www.findatrans.com

ID a torque converter
Help with identification of a torque converter.
http://www.idatc.com

A Short Course on Automatic Transmissions
Long article explaining the concepts behind modern automatic transmissions and their repair.
http://www.familycar.com/transmission.htm

Transmission Rebuilders Network Worldwide
TRNW is a world-wide network of transmission technicians and transmission shop owners who discuss every aspect of running a transmission repair facility.
http://www.trnw.net