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Totally unrelated but you may want to toss that hand sanitizer as that was one of the brands that had high levels of benzene Sent from my SM-N975U using Tapatalk

Look and see if you have a relay for your wipers. It has Likely fused together. Pull & replace. Sent from my SM-N975U using Tapatalk

Has been years since I've fooled with audio gear but I'm assuming you have capacitor(s) installed as well, correct? Sent from my SM-N975U using Tapatalk

I think if you are wishing to feel the artic chill you need to put your air on "Low" instead 70 whatever degrees. Sent from my SM-N975U using Tapatalk

I've been told it is the direct injection. I had a Cadillac CTS that you couldn't hear it on but definitely hear it on my '18 Sierra while I don't remember it on my '16. I do know it sounds exactly like an exhaust leak and is annoying. Sent from my SM-N975U using Tapatalk

It was supposed to be a different fluid from the one that had came in it. They ran 3 flushes to get the old out before they put the new in. Went through this twice. Sent from my SM-N975U using Tapatalk

I'm sure they know all about it, seems fairly common. My 16' had it around 10k miles swapped fluids and it came back... I traded the truck. Had spent a ton of time at the dealer without any luck fixing the stutter or steering wheel pop (rough country lift) may have been culprit in wheel pop. Sent from my SM-N975U using Tapatalk

I cut out a piece of cardboard and place a towel on top of that. Has served me well. Sent from my SM-N975U using Tapatalk

My '16 did the same. Someone had told me the spring could be twisting causing the noise. I have no idea but do know it drove me crazy. Sent from my SM-N975U using Tapatalk

I notice that all the time on vehicles. Sent from my SM-N975U using Tapatalk

After thinking for a few days, I vaguely remember one thing I fixed one the passenger seat. I can't remember if it was the tilt mechanism of the headrest or if the headrest itself wasn't seated down far enough but I remember the headrest was making a rattling sound. May be your issue as well maybe not but I'm pretty certain that was my final finding. Sent from my SM-N975U using Tapatalk

Any fitment issues? I remember seeing posts about people having gap issues but yours looks flush. Sent from my SM-N975U using Tapatalk

I can remember when it wasn't making the sound I would hit the passenger seat to try and replicate it. I remember taking the child seat apart in it's entirety looking for it. For some reason I feel as if I finally found it, I'll keep pondering if I did and maybe someone else can chime in in the meantime. Sent from my SM-N975U using Tapatalk

Mine does the same. I had read it's from the factory idle RPM being set too low ( for fuel efficiency). Sent from my SM-N975U using Tapatalk

My '16 did the same exact thing. I can't recall if I figured it out before I traded it. Sent from my SM-N975U using Tapatalk