2004 Isuzu Ascender - Dash vents

Maintenance/Repairs
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AC_heater/dash_boards_vents_do_not_work

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Are you saying there’s no air blowing? That’s a problem with the fan or switch. Start by checking the fuse since it’s the simplest.

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Tralblazers, Envoys, Ascenders all had some issues with mode actuator motors breaking in the dash . If you can hear the fan blowing then this is a likely culprit .

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Say hello to the HVAC control module.

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This little computer controls all the functions of the HVAC systems in your vehicle.

Tester