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Discussion Starter · #2 ·
I know it's this specific actuator. The recirculate button doesn't close the outside air flap when turned on. I get constant outside air
 

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2004 gmc envoy_slt
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Unfortunately, the Recirc actuator is the worst one to replace. It requires some disassembly of the dash. Check YouTube for any videos or search this site for actuator replacement. Attached is a diagram of actuator locations.
 

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