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Hello, do you have air suspension? also, what do you mean by no lights, can you reword that
that fuse only sends battery power to the HVAC control panel and sends battery power to the airsuspenion module, That is it,. No way for me to say where the fault may lie, It could the air module or the HVAC module. The HVAC module is removed after center consol is removed, the air modul is at the back of the truck, underneathe back by rear bumper persay, I would unplug the air module first, see if fuse blows, If it does? then will need to unplug the HVAC modul. if no blow? then HVAC module is bad, They have had known issues with the HVAC module. Wiring? kind of doubt it but possible, Its the orange wire to both modules that derives from the fuse