Join Date: Dec 2010
Location: Homestead, Florida
Nothing I have seen can confirm, positively, that it will fit. You will probably be the first to do this. There are instructions in the 2011 Service Manual for replacing just the switch. All it says is to "Unsnap Switch from trim plate". The drawing is the same configuration as yours, but it doesn't mention 2wd or 4wd, so there is hope.
I suspect that this situation is the same as the ignition switch. They give instructions for replacing just the switch, but you have to buy the ignition lock housing to get the switch. It appears that GM can make more money selling component assemblies.
Keep us posted.
Edit: As soon as it gets light enough outside, I'll go remove the trim plate on my truck and see if we can get a better idea if it will work. I have a 2wd.
Last edited by cart7881; 11-20-2015 at 05:54 AM.