I have a problem with a 2004 Tahoe automatic door looks. Only the two front door lock, and you have to manually lock the two back doors, and the rear door with the key. About 10% of the time they lock all, 90% as described above. The delay locking is enabled on exit from vehicle. The key fob lock does the same. What am I looking for to fix this problem?

 

I am having the exact problem with my 2004 Tahoe door locks. Did you find a resolution to this?

Thanks.