Various Electronic Issues all at once

MIKEDRISCOLL45 · Feb 12, 2023

My 2021 AT4 6.2L 1500 electronics have been on the fritz for the last few months.
I get these messages on the display constantly while I'm driving:

• Service Side Detection System
• Service Steering Column Lock ~
(Display flashes bright, tach/speedo needles dance back & forth, A/C turns ON & OFF a few times)
• Service Trailer Braking System ~
(tire pressure sensor light flashes 3 times)
• Service Theft Deterrent System
• Service Tire Monitor
• Service Antilock Braking System

These features are inoperative:
• Adaptive Cruise Control inoperative
• Regular Cruise Control inoperative
(it's like cruise control is non-existent)
• Lane Assist inoperative
• Side Detection inoperative
• Heads-Up display is no longer interactive (does not detect cars ahead)

it's been in service at my local dealer TWICE for these issues (on Dec. 8, 2022 and again on Feb. 8, 2023) and they all work for a few miles down the road, then they all kick back up again. I think the service techs are only clearing the codes and not figuring this out.

Has anyone else experienced any (or all) of these issues?

Duramaximus · Feb 12, 2023

I've not experienced any issues whatsoever with mine.

usmcfiredog · Feb 12, 2023

my only weird issue is that my fuel economy page resets the fuel economy on every trip and does not continuously do it for the amount of miles the page is on. Also my massage seats don't remember the last setting that I used which it is supposed to. That's about it and way different from your situation

Jugaal · Apr 1, 2023

Yeah, I have a 2022 AT4X and am having the same problem. I took it in to dealership and after about a week they said it ended up being the leveling kit changing the steering column angle outside of spec….. I don’t necessarily buy that though because after they recalibrated the angle it happened again. I have a very mild leveling kit installed (1.5”) from Rough Country specifically designed for the AT4X so I seriously doubt it has anything to do with it. Otherwise everyone would be on here complaining about the same issue.

adeerchaser · Apr 1, 2023

Jugaal said:
Yeah, I have a 2022 AT4X and am having the same problem. I took it in to dealership and after about a week they said it ended up being the leveling kit changing the steering column angle outside of spec….. I don’t necessarily buy that though because after they recalibrated the angle it happened again. I have a very mild leveling kit installed (1.5”) from Rough Country specifically designed for the AT4X so I seriously doubt it has anything to do with it. Otherwise everyone would be on here complaining about the same issue.

Now ya just wanna say- ok next lie? Feel for ya, we spend this kinda money on trucks and get this lack of support or GM is not giving them the tools or knowledge to fix. Either way is BS.

MIKEDRISCOLL45 · Apr 2, 2023

Update on this issue:
I took it back to the dealer for the third time last month. They kept it for 3 weeks, finally determined it was a bad "Control Module." They contacted GM to order it, and GM didn't have one in stock. They called around various dealerships & found one. Took them another week to receive it. Got the truck back and everything worked as it should - for only 7-1/2 days. Hit the highway after work one evening & all my bells & whistles stopped functioning again. So now I have to take it back in for Round # 4.

Duramaximus · Apr 3, 2023

MIKEDRISCOLL45 said:
Update on this issue:
I took it back to the dealer for the third time last month. They kept it for 3 weeks, finally determined it was a bad "Control Module." They contacted GM to order it, and GM didn't have one in stock. They called around various dealerships & found one. Took them another week to receive it. Got the truck back and everything worked as it should - for only 7-1/2 days. Hit the highway after work one evening & all my bells & whistles stopped functioning again. So now I have to take it back in for Round # 4.

That sucks man. Keep us posted.