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I have an '03 silverado duramax 2 door. AC works well. But when the fan is in the off position the cab smells moldy. I have found info on the '04 filter replacement but there seems to be no info on the '03 online. IF it even has a filter I cannot find the tray/door under the dash. I found a link that suggested that there was a filter access under the "vent cowling" under the windshield wipers on the exterior of the cab just below the windshield. Before I start removing parts I would like see if I can verify if the '03 has a filter and where it is located.
