There is no ABS warning light on the dash so I'm assuming it works right but I can easily squeal the tires on the GMC Envoy by hard braking, whereas in previous vehicles braking hard would make the ABS do its thing by making the pedal vibrate and no tire squeal. Apparently ABS is standard, so maybe the ABS in the GMC Envoy is just slower than I'm used to? I mean, the obvious solution is to maintain a safe following distance and not have to slam the brakes on so hard, but that's no fun