C1225 through C1228
WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The EBCM detects a rapid variation in the wheel speed. The wheel speed changes by 24 km/h (14.9 mph) or more in 0.01 second. The change must occur 5 times with no more than 1 second between occurrences.