BigBrew

I have the kicker upgrade in my 2015 crew cab. The sub is more then enough if not quite musical enough. Unless you want to rattle the license plate off. The sub fits well, is all plug and play with the stock stereo, and is a perfect color match.

You guys are giving me flashbacks to my 2008 avalanche. I chased this EXACT same issue for months. Ended up being the 15 pin connector to the transmission, or the Transfer case control module. I disassembled and cleaned those 3 connectors and the problem went away. This was after replacing the module above the spare tire, and the mega fuse and all that crap. There was a TSB out that was 120 pages long dealing with this issue. Loss of GM Lan.