2020 GMC Savana 4500 Reverse Rotation; Severe Duty Thermal Fan Clutch;. 2009 GMC Savana 4500 Engine: 6.0L V8; Reverse Rotation; Optional Duty Thermal Fan Clutch;. 2010 GMC Savana 4500 Engine: 6.0L V8; Reverse Rotation; Optional Duty Thermal Fan Clutch;.
