04 6.0 Stuck on Defrost

046oh

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I have an 04 6.0 that's stuck on defrost but my 4wd works thought it was my wheel bearings because when I switched to 4wd it would kick it back to any of the vents I would select and switch back to defrost in 2wd, I replaced my wheel bearings my 4wd works but now when I put it in 4wd it stays stuck on defrost. I'm going to try putting in a new Pulse Vacuum tonight, but would like to hear any other thoughts on what it could be.
 

6.0 Tech

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The vacuum solenoid is a pretty good shot, unless there is a leak after it going down toward the hubs

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046oh

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Got my vents working again, changed the solenoid, didnt fix it, so I dropped the glovebox and pushed on the vacuum housing connections in there and it is now coming through my vents again.
 

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