C 2500 Truck 2WD V8-305 5.0L VIN M SFI (1997)
ABS Light: Description and Operation
The "ANTILOCK" indicator lamp in the instrument cluster is only used on models with Four Wheel Antilock (4WAL) brakes. This lamp informs the
driver of antilock system operation and malfunctions. When a malfunction occurs, the Brake Pressure Modulator Valve (BPMV) completes the circuit to
the lamp. The lamp may remain illuminated or turn back off depending on the nature of the malfunction. The "BRAKE" lamp serves as a backup if a
malfunction occurs in this circuit.