ACDelco GM Original Equipment HVAC Blower Motor Resistors provide stepped voltage drops to provide multiple blower fan speeds and are GM-recommended replacements for your vehicle's original components. This original equipment blower motor resistor has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.Pinion Yoke Assembly; Dorman's Driveshaft Pinion Yoke includes a high-quality seal constructed from a combination of rubber, metal and plastic. The seal prevents lubricant from leaking and protects your vehicle against costly repairs.