Same issue here. Dealer claims they're working as they should and it's a "safety feature". Once again, makes zero sense. I am going to go back to the dealership this week and ask for the same thing. I'll be interested to see what they try and charge me to replace it.I had the headlight issue as well. I have a 22 Tahoe High Country that was built in February 2022. On our first trip I noticed the headlight icon on during a perfectly sunny day, and as the sun went down, the icon went off and DRLs came on. Carried it to the dealership after researching this and coming across this post (plus I had two warranty repairs needing to be done). They tried giving me the same spill that the headlights were suppose to be on during a perfectly sunny day due to safety reason and that GM engineers confirmed they were working as designed. Because it wasn't giving diagnostic code, they refused to change the sensor, so I told them to change the sensor and bill me for the part and one hour labor. They initially refused to do that because there may be a deeper issue (even though they've told me multiple times that all is working "well"), but finally gave in to billing me for a new sensor. I had even sent the service manager the link to this thread and ask him to read the issues people were having and encouraged him to read the GM owner's manual for Tahoe DRLs because they were working opposite of what the manual states. The dealership delivered my Tahoe to the house this past Monday, and they had replaced the sensor and repaired the warranty issues. I looked over the computer printout to see how much I owed on the sensor replacement, and what do you know, it was covered under warranty. The DRLs work as any DRL system is supposed to work and then the headlights come on when it actually gets dark outside. I guess they felt compelled to file it under warranty sense my "problem" was resolved. Man, common sense is in short supply nowadays.