1992 GMC P6500 Engine: 7.0L V8; Counter Clockwise; Severe Duty Thermal Fan Clutch;. 1996 GMC P6500 Engine: 7.0L V8; Counter Clockwise; Severe Duty Thermal Fan Clutch;. 1994 GMC P6500 Engine: 7.0L V8; Counter Clockwise; Severe Duty Thermal Fan Clutch;.