Defrost blend door keeps falling out

[thunderstruck]

Does anybody have a reoccurring problem with the defrost blend door? Every few months or so the blend door will fall out of it hole on the passenger side, making my defrost vent always open and my A/C constantly fog up the windshield. I have to crawl underneath the dash, take off the floor vent box, and reach up into the duct work to put the defrost blend door back in its place. Is there supposed to be a clip or something on the passenger end of the door so it doesn't fall out? I can't physically reach the passenger end of the door, so I can't put something on it unless I pull the dash.

 

[98Silveradoz71]

Bump Im having the same problem...

 

[thunderstruck]

Finally found what was causing this after I pulled my dash.

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There was another hole in the ductwork that helped hold the vent door in place, but once it broke loose, it allowed the door to back out of the hole at the end of the duct. Nothing a ziptie couldn't fix, !

 

[radicom56]

Oh my god thank you for this, driving my truck on hot summer nights has been trying my patience.