SWC

I know this is an old thread, Listened to your video 5x. I have a 2017 Suburban 8000 miles. But just to let you know I have the exact same sound!!! (split second rattle, at cold start) almost sounds like oil is finding its way to lubricate, Thought maybe since I don't drive it much only for towing that It sat too long and oil drain down Created this problem- hope Im wrong. And I was going to record it And bring itTo the Dealer but I figured it would be a waste of time.So glad I found this thread. Finding out at least 1/2 the people that replied have the same sound. Just wondered, GS bowtie if you ever Had Decent response from the dealer And what your latest deduction is of the sound, Also if you still have The sound.