AT4 flashing?

[Jason Rebellion]

I’ve got a 2020 SLT.  I just noticed today that when I start the truck, I get an AT4 logo flashing on the instrument cluster.  Flashes twice then it goes to the regular menu. I’ve never noticed this before so I think it just started. Any ideas?

[Jav_eee]

Just a good ol’ glitch. These things are chock full of bugs.


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[OnTheReel]

Another thing that has been going on for two model years now. 

[2016 Sierra Owner]

Subliminal messaging. They want you to buy an AT4!!

[zeon]

My tail lights on my trailer blinks when hooked to my AT4 anybody else have that problem. All my lights are LEDs truck and trailer with the truck turned off

Edited August 6, 2020 by zeon

[Jav_eee]

My tail lights on my trailer blinks when hooked to my AT4 anybody else have that problem. All my lights are LEDs truck and trailer with the truck turned off

It’s the trailer security “system”. The horn will honk if the trailer is disconnected.


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[zeon]

Did you mean the truck security. How can I fix it and stop it from blinking

[Jav_eee]

Did you mean the truck security. How can I fix it and stop it from blinking

No, I meant TRAILER. Not sure if there’s a way to disable it, check in the infotainment center in the trailer section while the trailer is attached (or unattached).


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[Jav_eee]

Did you mean the truck security. How can I fix it and stop it from blinking

Try this


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[zeon]

Thanks