Since our test truck was an LTZ model, it included the upgraded dash that can be found on GM's SUVs. As such, the standard automatic, dual-zone climate control system lacks the traditional big dials, which are replaced with triangular buttons that control temperature, fan speed, and mode. Interestingly (and a bit odd), the heated mirror controls are bundled in with the main climate controls rather than with the mirror buttons on the door panel. However, the heated seat controls, comprised of three settings for the seat back or the seat back and seat bottom, are on the door panel. In any case, find the appropriate buttons and you'll be heated or cooled in no time.