BO TIE 1

Did you try just disconnecting the battery for a little bit just to reset everything? Just a thought.

I would try getting a handheld tuner and changing the tire size. I have a diablo sport intune that allows you to change the tire size and many other parameters.

Looks like something got shorted out from the rain. Not sure if the warranty would cover that since you had them apart. Try taking it in and see what they say. Good luck. Let us know what happens.

I had a 2014 shaker that I traded for my 2018 that is smooth as glass. Best advice is get it on the highway and get it up to 70 to 80. But that doesn't guarantee that it won't develop later. Keeping my fingers crossed with my 2018. So far so good. Good luck to you.

Truck looks good by the way!

It will adjust back to normal. Had the same thing happen after doing the diablo tune on my 2014 Silverado.

It's the fuel pump priming. My 2018 Silverado does the same thing. Sent from my SM-G935V using Tapatalk

Still under warranty? Take it in. Sent from my SM-G935V using Tapatalk

You can try and disconnect the battery and see if that resets it. Sent from my SM-G935V using Tapatalk

Yeah sorry I thought you had the 6 speed. Not sure on the 8 speed. Probably check your manual. If you think its the fuel management (AFM) that`s where I would start.

Have you tried putting the transmission in manual mode? Put it in manual and only go to 5 th gear this will keep it out of AFM. Sent from my SM-G935V using Tapatalk

https://www.yukongear.com/productdetails.aspx?ProdID=6841

My 2018 Silverado 1/2 ton also has issues with the front collision allert system since the day I drove it home from the dealer even with it turned off it still goes off unexpectedly. Plan on having it checked out when I have my first oil change. Sent from my SM-G935V using Tapatalk

If you know anyone with an Android phone and theirs works on the truck I think you could rule out the truck being the problem. Just my opinion. Hope that helps. Sent from my SM-G935V using Tapatalk

Do you have another phone you can try? Spouse family member or a friend. Sent from my SM-G935V using Tapatalk