K 1500 Suburban 4WD V8-393 6.5L DSL Turbo (1994)
Audible Warning Device: Description and Operation
Lamps-On Warning Buzzer
When the Light Switch is in HEAD or PARK, and the Panel Dimmer Switch is not at the dimmest setting, voltage is applied through the PANEL LPS
Fuse to the Audio Alarm Module through the GRA (8) wire. With the Panel Dimmer Switch at its dimmest setting, the current to the Audio Alarm
module may not be enough to be sensed by the module. When the Ignition Switch is turned to RUN or START, voltage is supplied through the GAGES
Fuse to the Module through the PNK/BLK (39) wire. These two voltages are sensed and the alarm is not sounded.
When the Ignition Switch is turned to LOCK, OFF or ACC, the GAGES Fuse loses voltage. The Audio Alarm Module senses the change. If voltage is
still available from the PANEL LPS Fuse, voltage from the STOP-HAZ Fuse is supplied to sound the alarm through the ORN (140) wire. The alarm can
be turned off by turning the Light Switch off. The Module no longer senses voltage from the Light Switch, so the alarm does not sound.
