2022 Denali day time running lights reversed…

[Coronado126]

I've got the same thing going on with my 22 RST. Had it at the dealer and they threw a light sensor at it, but that didn't fix it. According to them GM tech support advised them that they know of the issue, it's software related, and they're working on it.

Hopefully that means quickly considering it's for the headlights, but you never know these days...

 

[Yukon_]

Good to know about possible firmware update

 

[Aviator_386]

I have the same issue on my new 2022 Yukon xl. I brought it in and they replaced the Sun load and ambient light and security sensor. Part 13545621

I picked it up and still have the issue. They brought around a new Yukon xl Denali and it was doing the same thing. They are going to escalate the issue.

 

[Aviator_386]

Just take it back to the dealer and show them the TSB and thread about the headlight issue. If they still don't believe you, tell them to replace it and you'll pay for it if it doesn't fix the problem. That will shut them up.

Where is the thread about this and TSB?

 

[Chad G 1979]

https://www.tahoeyukonforum.com/threads/question-about-the-headlights.133415/ this is the link to the thread that has this information as headlights seem to be considered exterior part of the vehicle so the thread is there. quite lenghty but the TSB is in there somewhere