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I fired up the A/C the other day and the dash sounds like a jet engine. The air is still cold in both A/C and MAX A/C settings and the fan sounds/acts the same in all the other setting (defrost, vent, floor etc.), so I feel reasonably sure it is the fan itself.
If I turn it past the second blower setting the noise increases and the volume of air deceases until barely no air flows at the highest setting.
Anyone else ever have this problem? Any guesses? Suggestions? Where is the fan for the climate control on an 03 PSD?
At least it is not hot in SoCal (90's), and my truck stays cool (black), UGH!
After some trial and error I figured where the fan is and removed it. Sure enough the fan where it attaches to the shaft is cracked causing it to be off balance