When an HVAC blower fan switch fails on certain Peterbilt vehicles, the only original equipment solution is to replace the whole control module. This Dorman OE FIX solution directly replaces a failed switch to reduce repair costs. Product Features:Cost-efficient repair - this HVAC blower motor switch directly replaces a failed switch so you don't need to by a new moduleEffective solution - fixes common failure point without unnecessary costEasy installation - switch is plug and play for straightforward repairQuality engineering - designed in the United States and backed by decades of automotive aftermarket experience