Quote:
Originally Posted by keylay31
Does anyone have instructions for how to take apart the passenger side dash so I can investigate this further? Would be nice to not just start removing bolts.
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My truck made a very similar noise and it was an acorn bouncing around as the fan turned. You can rule this out by turning the fan to off with the truck either running or in the key position that powers up the HVAC. If it stops when you turn off the fan, you've probably found the problem.
If you would prefer to look, or if the noise stops when the fan does, follow
these instructions to remove the glovebox door and cabin air filter. In the video, the rounded white plastic housing under the cabin filter is the fan housing. You may be able to see in there but if not, just stick your hand in and feel around (with it off of course). If something has gotten past the cabin filter - I'm still trying to figure out how an acorn got in there - it will cause such a noise as the fan rotates. Good luck and let us know what you find.
Edit: Just remembered I had a pic.