HVAC Blower Motor Control Switch Replacement For Peterbilt 384 (2008-2015) - Fits 599-5000 Part Number

If the blower motor control switch in your Peterbilt 384 is acting up, this direct replacement can get your HVAC system back on track. It’s designed to fit Peterbilt 384 models from 2008 to 2015 with various engine sizes (8.8L to 14.9L). The part matches OEM number 599-5000 (also Q21-6012) and is made from quality materials for reliable performance. Installation is straightforward—no drilling or modification needed. Just swap out the old switch and reconnect. Before buying, double-check your vehicle’s model year and part number against the fitment info and pictures to ensure compatibility. Comes as one switch per order. A solid, affordable fix to restore your cab’s heating and cooling control without dealership prices.