Blazer 4WD V6-4.3L VIN X (2005)
Audible Warning Device: Description and Operation
AUDIBLE WARNINGS DESCRIPTION AND OPERATION
The audible warnings alert the driver of a system concern or a critical vehicle condition. The BCM generates the audible warnings through an internal
speaker. The BCM emits audible warnings based on various inputs. If the BCM receives multiple audible warning requests, the warning with the highest
priority sounds first.
Fasten Safety Belt Warning
The BCM activates the fasten safety belt audible warning, and also sends a class 2 message to the IPC to illuminate the fasten safety belt indicator
when the following occurs:
-
The ignition switch transitions to RUN.
-
The seat belt is not buckled and the signal circuit is low.
If the seat belt is buckled while the chime is sounding, the chime stops. If the seat belt is unbuckled after the initial transition to RUN, the chime does
not sound.
Key-In-Ignition Warning
The BCM activates the key-in-ignition audible warning when all of the following occurs:
-
The driver door is open and the signal circuit is low.
-
The key is in the ignition and the signal circuit is low.
The audible warning will sound for as long as the above conditions exist.
Lights On Warning
The BCM activates the lights on warning when the following occurs:
-
The ignition is not in the RUN or START position.
-
The headlamp switch is in the PARK or Head position.
-
The instrument panel dimmer switch is not at the most dim setting.
The audible warning will sound for as long as the above conditions exist.
Low Fuel Warning
The BCM activates the low fuel warning when the following occurs:
-
The ignition is in the RUN or START position.
-
The fuel level is below 17 percent.
-
The BCM receives a class 2 message from the PCM requesting an audible warning.
