abs control module and pump on 2003 GMC Yukon XL 1500

Does any know how to recognize if its an active brake control and traction control on my vehicle. this is one of the things they ask when looking for the type of module and pump. all i know that i have is a picture of a trailer that i push if im pulling a trailer. Thanks for any help

Asked by for the 2003 GMC Yukon XL 1500