Hoping someone has the answer that I am looking for. I recently bought a 2011 1LT that I want to upgrade the speakers and stereo. Looking at Rockford Fosgate for speakers to go with my MTX 12 inch subs powered by the hammer amp by MTX and using my Alpine 4 channel to power the speakers. Now the question is does anyone know of a two din head unit that lights blue and second a harness to keep all the bells and chimes for information center. Hate to lose what GM has input but not at all impressed with the stereo setup. If anyone could help it would be greatly appreciated. Web searches for the harness hasn't revealed anything that would be useful.