So my traction control/stabiltrak and service stabilitrak/traction control system warning light comes on when slowing down and turn off when accelerating. Only does it in the morning until it warms up (20-20min).

I'd get the codes

Is the check engine light on and/or flashing?

I agree with carfixer007, see what codes are stored.

Yes, but for an unrelated issue

Gotcha.

Time to get the codes to see if the unrelated issue is there and also if there are other codes stored as well.

What is/are the code(*) for the unrelated issue?