HVAC Blower Motor Resistor. 1991 GMC Sonoma 2.5L L4; Blower Motor Resistor; 4 Pin;. 1991 GMC Sonoma 2.8L V6; Blower Motor Resistor; 4 Pin;. 1991 GMC Sonoma 4.3L V6; Blower Motor Resistor; 4 Pin;. 1992 GMC Sonoma 2.5L L4; Blower Motor Resistor; 4 Pin;.
