Anti-lock or ABS warning light description and picture for cars and trucks.
An ABS or Anti-lock brake warning light means a problem was
detected, and the system needs to be scanned for trouble codes in
order find out the area the fault is in.

With the light on,  ABS operation is not present, but normal braking is.
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ABS Warning Light Malfunctions Indicator for General Motors Cars and Trucks.
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