ABS Fault indicator ?

The way the Brakes work on your Colorado, if there is an issue with your ABS, the brakes will still work. You may just not the have ABS brakes active. Most common cause of the ABS indicator is a faulty sensor to one of the 4 wheel. the common ones are the front wheels. Inspect the ABS sensor lead wire which should be along the A-arms to the ABS sensor on the inside wheel hub. Spray brake parts cleaner to the sensor and speed ring to ensure there clean and free of dirt that may be hindering the sensor to read the speed ring on the hub. Look at the condition of the lead wire and inspect for corrosion or any other type of damage. Most of the time a good spray of Brake parts cleaner will fix the problem. If there is an Auto Zone around your area, buy the brake parts cleaner there and have them scan the truck for the DTC codes which would indicate that it is the ABS sensor and not the ABS module, which will be costly and your most likely run it the way it is without ABS due to cost of replacing the module. Good luck friend.

Hi:
The ABS fault indication is a real deal, and usually it is caused by a wheel speed sensor . When that fault indicator is on, you won't have ABS brakes, but your normal braking will be fine. It is a safety concern, and would help you to get stopped quicker in emergency situations.