2024 2500 at4x aev issues

[Musselridge]

Wow! How did you find out? Did CEL come one?

Yep cel came on and notified that speed would be limited to 65 mph. The part is available online but not to GM. So frustrating

 

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[Stets]

I have a 2024 2500 diesel at4x AEV edition and a week into ownership the tailgate started to open while parked. After it opened it would continue to unlock every 30 seconds, eventually killing the battery overnight. Brought it in to the dealer and they said there was a service bulletin and replaced the switch. Now the tailgate is fixed but the headlights flash for no reason. Also causes the wiper blades to stutter when the headlights flash. See attached video. Bringing it back to the dealership for some more head scratching. Anyone else having this issue?? Or any ideas?

Exact same thing happened to my 2025 2500Hd AT4X, tailgate opening, light flashing, unlocking doors....dead battery! Took a week to get it in, said they
fixed switch in tailgate and things seemed fine for awhile. Now i noticed my chrome unlock button on drivers door handle doesn't work any more. So i watch my security cameras at night while parked, and there it was again. All marker lights flash 3 times, every minute or so all night long.
Again i can't get it in for a week, I am sure it's going to wear the battery down again. Neighbour's are even sending me videos of this BS....
When i called the dealership, he said to check the tire pressure...OMG!
Any thoughts or advise will be appreciated.

On another thread about the ride! I find this 2025 pretty rough while empty compared to my 2023 AT4X. Truck has stock suspension and tires no mods.

 

[gemarsh]

Exact same thing happened to my 2025 2500Hd AT4X, tailgate opening, light flashing, unlocking doors....dead battery! Took a week to get it in, said they
fixed switch in tailgate and things seemed fine for awhile. Now i noticed my chrome unlock button on drivers door handle doesn't work any more. So i watch my security cameras at night while parked, and there it was again. All marker lights flash 3 times, every minute or so all night long.
Again i can't get it in for a week, I am sure it's going to wear the battery down again. Neighbour's are even sending me videos of this BS....
When i called the dealership, he said to check the tire pressure...OMG!
Any thoughts or advise will be appreciated.

On another thread about the ride! I find this 2025 pretty rough while empty compared to my 2023 AT4X. Truck has stock suspension and tires no mods.

Welcome.

There are a few of us that reprogram the tire pressure settings on the dic to a much lower psi than the door jamb 80psi it calls for.

I find that 50-55 psi empty is a much better ride. Will raise the pressures when loaded.

 

[Stets]

Welcome.

There are a few of us that reprogram the tire pressure settings on the dic to a much lower psi than the door jamb 80psi it calls for.

I find that 50-55 psi empty is a much better ride. Will raise the pressures when loaded.

K noted, i have it in KPA 396-400 on all 4, which is approx. 58 psi. My TPS monitor on the dash is green on all four tires. are you saying this could be connected to my light flashing issue? And what is the DIC to reprogram?

 

[gemarsh]

Light flashing issue...no.
Was replying to the rough ride comment. The dic is where you see the TPMS monitor. (Among other information).

I'm wondering if the replacement switch is bad. Have heard of other new items failing right away. Hope the dealer gets you squared away.