I think there is no 96 Trans Am. The Trans Sport module is on the rear center of the engine. Remove and replace it with standard US or metric tools. There are three electrical plugs to remove from socket. The Trans am didnt die till 2002 there was one in 96.
Start by determining why it's not closing all the way, then you make your repair accordingly. There's more than one possible reason why this deficiency exists - you've given us nothing to narrow down that list of possibilities with.