Since I'm headed to da U.P. MI, with all of its glorious lake effect snow, I decided it was time to get off my lazy @$s and fix the 4wd. I'd tried pulling codes for it and it said everything was fine. The switch panel would come and go, and it doesn't throw a code for that so I popped the switch out of the bezel, plugged the electrical back in, and flexed the switch around. With this, I could repeatably get it to come and go so I ordered the switch. It came in today.
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Button clicks are a bit crispier too. Next I went for another cold weather annoyance: the squeaky blower motor. I've been extra lazy with this one. It's been squawking the last couple of winters when cold. Turn it on high for a minute and it shuts up. I tried the cheap way and it seems to have worked. Yoinked the motor and put a couple drops of ATF on the easy to see bushing. Next I decided to see how filthy the HVAC box was. These GMT400 trucks are notorious for plugging these up.
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Mine really wasn't that bad.
Edit: I didn't look at this pic close enough, that left row is slammed shut with dust!
I still hosed it out though. Thinking back I should have hit it with some simple green before the hose, but too late now. After 2 easy wins, I went for a 3rd. My radio cuts out when it's cold and I hit a bump. Suuuuuper annoying. I popped its single DIN face off and the contacts on both sides look healthy. I ran a pencil eraser over them, thinking that's not it. It does look like the Metra bezel fits a bit tight on the left side and that's the side you push on to pop it out. I suspect it pushes the face over a little bit onto the plastic separator dealies? Who knows, gotta get it to mess up first then try something else. I think I'll try and shim the radio over to take some pressure off of the bezel against its face.