[Premier17]

Your LS would have reflector headlights. The LT trim introduces the projectors/LED DRL's.

 

[Premier17]

I really don't think you're looking at a simple plug and play swap for the different headlights on the Cruze. Your LS has separate bulbs for the low and high beams. The upgraded headlight with LED DRL use a single 9005 Bulb with a motorized flap to change the beam pattern between hi/low beams. I'm guessing the harness is different, and the programming itself on the car for the two variations.