@padrino14 Now that I’ve done some more thinking about this, it would seem that these lights need to self-adjust, self-level, and self-calibrate… so there shouldn’t be a need to manually adjust them.
And it sounds like you have a dealer that’s not exactly the most delighted to provide customer service. So, what I would do at this point is call GMC corporate customer assistance at 1-800-462-8782. Explain to them what is going on and they should create a case about the issue.
They should also ask you if you are working with a dealer on this. Tell them the name of the dealer you took your Sierra to. From there, they will follow up (read: hound) the dealer to get this taken care of for you, whether it means diagnosing the issue, replacing the lights, or something else. It puts accountability on the dealer from the GM corporate side.
That, or perhaps take into account what @dinsdale said about the LEDs taking time to get accustomed to, since they are a different kind of light/frequency.
Let us know how it goes 🙂
