Resources for troubleshooting common transmission issues include the Transmission Repair Cost Guide, About.com and EricTheCarGuy.com, as of 2015. Additional troubleshooting resources include CarsDirect and Angie's List.
The Transmission Repair Cost Guide website features an article on the 10 most common transmission problems. The article describes how transmissions work and outlines how to troubleshoot the most common issues. The website also provides information on the average costs of transmission repair, factors that affect cost, warranties and finding the right repair shop.
About.com has multiple resources for automotive repair, including an article on diagnosing automatic transmission problems. The article outlines the basic parts of a transmission and gives descriptive instructions for troubleshooting.