HVAC Blower Motor Resistor Harness. 1997 GMC K3500 Engine: 5.7L V8; Blower Motor Resisto Pigtail;. 1997 GMC K3500 Engine: 6.5L V8; Blower Motor Resisto Pigtail;. HVAC Blower Motor Resistor Connector. 1997 GMC K3500 Engine: 7.4L V8; Blower Motor Resisto Pigtail;.
