02' 2500 Running light case

Hi I am new to the forum and have a question. Recently I had my running lights changed out during service and one of the cases is not fully mounted. How do you remove and replace the enclosure? It looks as though the two inner tabs were not seated behind the mounting bracket. I hate to force it in and break it without knowing the proper removal and replacement procedure. I have looked but cannot find anything to disconnect on the outer portion of the enclosure. As of right now the enclosure is just slightly dangling loosely in towards the grill section.

Vehicle is a 2002 Silverado 2500

Thanks!

Nevermind, Got it figured out. See that I have to remove the headlamps assembly to get to the clip on the running lamps. Problem fixed.