2-52 Mirrors
S79 Front Side Door Window Control Switch for
memory mirror operation. When the memory seat
module receives a memory recall command, the
memory seat control module will send the go to position
to the S79 Front Side Door Window Control Switch. The
S79 Front Side Door Window Control Switches will then
drive the appropriate mirror motors to the commanded
position sensor settings.
Mirror Select
The S79D Driver Front Side Door Window Control
Switch has internal connections for the mirror select
switch. When the mirror select switch is active the
S79 Front Side Door Window Control Switch will either
control the driver mirror or send a serial data message
to control the passenger mirror.
Folding Mirrors
The S79D Driver Front Side Door Window Control
Switch sends the mirror fold/unfold inputs to the
K9 Body Control Module (BCM) through serial data.
When the BCM receives a fold/unfold signal it will send
a fold/unfold command to the S79 Driver Front Side
Door Window Control Switch which will send a serial
data message to the S79P Passenger Front Side Door
Window Control Switch. The outside mirrors will fold or
unfold depending on their current state. The BCM will
also send a serial data messag e to unfold the mirrors
when the vehicle is placed into gear. The S79 Front
Side Door Window Control Switches control the fold/
unfold motors through bi-directional control circuits
Heated Mirrors
The heated mirrors are controlled through each
S79 Front Side Door Window Control Switch. When the
vehicle is running and the HVAC control module
receives a rear window defog request from the radio/
HVAC controls, the HVAC control module will send a
serial data message to the S79D Driver Front Side
Door Window Control Switch and S79P Passenger
Front Side Door Window Control Switch. Each
S79 Front Side Door Window Control Switch provide B
+ voltage to the driver and passenge r outside rearview
mirror heating elements.
2022 - Silverado 1500 (New) Electrical Body Builder Manual
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