Originally Posted by Starjack
I think I had to use the extra code. The manual code only lets me play BL2 normal, no extras. And I can't see anywhere in game where a new code can be entered.
Not sure if you are meaning for steam or not but I clicked on the games tab in the menu at the top of the steam window and then "Activate a product on steam...", put the DLC code in there and it will download it.