Low Traction
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The low traction indicator is part of the traction control switch. The EBCM applies ground to the traction control active signal circuit in order to illuminate the low traction indicator during a traction control event.