I have been to the dealership 6TIMES for “service door latch system “ My rear door won’t lock even when it is locked! But then it won’t open from the inside!!
Help!!

 

Welcome from Florida. What does the dealership say about the problem? Try a different dealership or go with the lemon law!

 

I also have a 2025 Tahoe LT purchased new and had to take my vehicle to my local dealer for the "Service Doorlock System" error. I ignored it then realized my car doors were not locking from the outside. The passenger side front door and rear doors needed a new lock actuator and there was also moisture found in my door panels. It has been raining in my area and I can smell mildew and moisture coming from my door panel on the driver and passenger side. I am going to schedule an appointment with my dealer to have the door panel removed and check for moisture.

 

We tried dealer service just once, owning GM Suburbans and Yukons since our 1988 Suburban acquired in 1994.

Our 2005 Yukon had an intermittent non-closing issue with its sunroof, would always open. No noise, hum, etc. sometimes while pushing the button to close. Took Yukon to dealer, who agreed that I'd pay for a "fix" but not a guess. Dealer replaced the switch (which I had already tested) and still had same issue, maybe 5 return visits to service. Dealer let Yukon sit until next day before they could investigate - "ONE" guy had such experience in electronics, they said - and this needed diagnosis/troubleshooting WHEN it was inoperable, seemed to work the next day. Anyway, dealer eventually stated "we have no idea what was wrong", and after a fight I got full refund. Once the sunroof would close, I took out the fuse to keep it closed.

So I'm not surprised dealer cannot fix this....sorry.....

 

At the sixth visit they were able to fix my door locks and the child locks!!
Now it has been good for 2 weeks!

Until today!!! Went to leave work and I have 3 warning lights on! “Service ESC”, “Service Traction Control”, and “Reduced Acceleration Drive With Care”!!!
This vehicle is a 2025 and just hit 3,000 miles! WTH??