HVAC Blower Motor Resistor. 1999 GMC Sierra 2500 5.3L V8; Blower Motor Resistor; w/ Manual AC | 4 Hole Mount;. 1999 GMC Sierra 2500 6.0L V8; Blower Motor Resistor; w/ Manual AC | 4 Hole Mount;. 2000 GMC Sierra 2500 5.3L V8; Blower Motor Resistor; w/ Manual AC | 4 Hole Mount;.
