Ventilation system became loud inside the cab.
Recently the ducting in the dash sounds very loud and hollow with no performance at the driver and passenger vents. Even when in defrost mode it sounds the same.
bad blend doors
Yep, That's what I thought. Reminds me of an earlier issue with the passenger climate control stuck in Hot only mode. Thanks for the response. How do you access the Blend Doors?
Mine did the same thing, what I found was that there is a filter near the intake that fell down blocking off the intake. Not sure how to fix it yet though.
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