Beer Belly

My first thought was a clogged A/C drain line

I went with Billstiens on all four corners, Spring Base from old front shocks would not come off to be transferred, had to purchase these new front shocks just for the spring base for the Billstiens (not happy). Now I'm left with new, OEM Shocks, minus spring base, cost $600, willing to sell locally for $400 OBO. Danbury Connecticut area.

Seems like you've done all the items I've heard about. I got lucky, and quick swap with a new Brake Controller and done. Keep us up do date with what you find, may help others. TIA

I saw a You Tube video stating GM has lost a Lawsuit concerning the damages caused by the AFM/DOD System that GM has known to damage Lifters / Push Rods / Camshaft and engine failures......any truth to this ?

My '15 Sierra early on had a misfire cyl 7.....ended up being Lifter issue, replaced the entire bank under warranty

Sounds a bit like what I had with my truck.....more of a creaking than a bump sound. I sprayed the snot out of the control arm bushings with PB Blaster, seemed to work for my situation

I'm looking at hooking up Aux also, I want to control them from the Bed Lights, isn't there Block somewhere under the bed where I can tap in ?. I want to use the lights when needed, don't want them coming on when I lock the truck at night at the campground and disturbing fellow campers.

If you just want to clean off the "junk", make a paste with Baking Soda, let it sit, may need to use a toothbrush to scub a bit, then rinse with water. Again, this is just to clean the junk, best to do as diyer2 suggest to avoid problems.

2015 GMC Sierra, 66,500 miles, had a bank of Lifters replaced at about 27k, A/C Condensor recently, other than that, I absolutley love this truck, and believe me when I say I work this truck, it does not get babied by any means.

I have not heard of anything. I have great rapport with my dealer, they replaced the Condenser for $344, originally quoted $1,200. Have a talk with your service manager.

On my 2006, 93,000 miles, right after the Front Diff and Tranfer Case the month before. The Wheek Bearing also took out Axle Seals and Rotors the wheel was so cocked. My '15 Sierra has just hit 64,000 miles, so far we are good.

My dealer diagnosed the Brake Controller in the dash. Bought from Rock Auto and replaced myself in 15 minutes, seems to be fine now

I had mine throw the same warning, not hooked to the camper. Dealer diagnosed it was the dash Brake Control, they wanted $130 to replce it. Rock Auto, iirc, about $40. I held out on doing the replacement until yesterday when it threw the warning again (very intermittent), only took 15 minutes to replace it, easy fix.....if that is the problem, we'll see.

Yep, I got bit by the Condenser just yesterday, have an appointment Monday for the dealer to replace it.....$374+ tax, I believe thru GM Goodwill, otherise they quoted $1,200....doesn't hurt to ask for a little help, especially when you have a good rapport with the dealership. 2015 GMC Sierra 61k on the clock