Hvac Module issue in Western Star

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by PowderPuff388, Jul 22, 2025 at 10:47 AM.

Jul 22, 2025 at 10:47 AM #1
PowderPuff388 Bobtail Member

34

1

Oct 31, 2012

Alberta

0
2019 Western Star 5700xe
HVAC module acting up,
Fan works on 1 to 4 settings (Only thing that works)
Ac will not turn on
Bunk Button will not work
Recirculation will not work

Checked all fuses and everything is good.
Tried another HVAC Module and still same thing. Stumped! Whatelse could be the issue??
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PowderPuff388, Jul 22, 2025 at 10:47 AM

PowderPuff388, Jul 22, 2025 at 10:47 AM

#1
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