Recently purchased a 1997 Z71 that has been lifted (suspension) and has 37" tires. The anti-lock break warning light is on and the codes indicate it is because the rear wheels and front wheel speed sensors are showing different speeds. The truck is geared properly for the size tire. Is there a way to reprogram the computer to correct for this problem? Also, the speedometer reads high. Can the computer be reprogrammed to correct for this as well? If not, is it possible to upgrade to a more current computer that can accommodate these concerns?

Thanks