Chevrolet Tahoe ABS Light On In Winter

Gretta’s question My 1999 Tahoe keeps setting the ABS warning light. It’s been snowing a lot, and I want the brakes to be working right. What could be causing this?

Answer: Yes, the ABS braking system is a fail safe system, so that if the ABS portion breaks down it just reverts to normal brakes. BUT, you won’t have anti lock capability when that light comes on. Now they are rather complex computer driven systems, but since you mention you’re in a snow area, that can often be the cause of ABS malfunctions in that Tahoe. The salt and slush can cause corrosion in the ABS wheel sensors. GM even put out a bulletin about this a few years back. So have the wheel sensors removed, the assembly cleaned of debris, and see if that fixes your problem. You may need further work, like replacing bad sensors or broken wiring, BUT start with the simple process of just cleaning the sensors and their mountings off. Because that often fixes ABS problems in those Tahoes.