K 3500 Truck 4WD V8-454 7.4L VIN J SFI (1996)
Malfunction Lamp / Indicator: Description and Operation
The warning lamp will illuminate if there is an air bag system malfunction. Ignition voltage is supplied to the air bag warning lamp when the ignition
switch is in the RUN or START positions. The DERM controls the lamp by providing a ground with the lamp driver. The air bag warning lamp will
flash seven times when the ignition switch is first turned on to verify DERM operation.