You wont have a third brake light which is illegal in all 50 states. It becomes a convenient excuse for a cop to pull you over and bust you for illegal parts or lack of cat converter. There are aftermarket third brake lights, but there is no way to swap the OEM third brake light w/out swapping the entire rear hatch.
I thought it was illegal if the 3rd brake light wasnt operational?
If it is removed completely.... I only say this due to the fact that on my 04 trailblazer the 3rd brakelight housing seems to break off every winter (due to the body shop doing a crappy job replacing it, and water freezing between the hatch) So I removed it completely and just use the rear brakelights....
I havent been messed with by the cops, and also passed inspection at DMV without it. It was brought to my attention by the dmv inspector.... but I gave him that same answer.
Also, I rember when I had my red LS... it had a third brakelight on the wing as well as inside the hatch.
....fill it with metal/weld the holes or source the hatch w/o the wing imo.!