http://www.chiltondiy.com/pub/support.aspx
Chilton (Cengage Learning) Customer SupportNon-technical issues such as billing, credit card inquiries, etc.
(800) 842-3636. Option 8, x55176
automotivecs@cengage.com
Customer Support hours are Mon-Fri 8am – 6pm EST
Technical issues related to computer hardware, software, browsers, etc.
(800) 842-3636. Option 5, or
http://www.cengage.com/support
Technical Support hours are Mon-Thurs 8:30am-9:00pm, Fri 8:30am-6:00pm EST