C0035, C0040, C0045 or C0050
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The EBCM detects an open, short to ground or a short to power on the wheel speed sensor signal circuit or the low reference circuit.