× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Posted to HD/Fleet Forum on 1/5/2018 1 Reply

I think there is a filter of sorts. More like a screen. One for recirculated air should be under the dash on the passenger side. That one unclips easily, two little tabs that squeeze together, then it pulls down. The other for fresh air is outside the truck, b... Login to read more.

1 Replies Received (View Replies)