1996 GMC C2500 Engine: 5.0L V8; Reverse Rotation; Standard Duty Thermal Fan Clutch; w/o A/C;. 1996 GMC C2500 Engine: 5.7L V8; Reverse Rotation; Standard Duty Thermal Fan Clutch; w/o A/C;. 1997 GMC C2500 Engine: 5.0L V8; Reverse Rotation; Standard Duty Thermal Fan Clutch; w/o A/C;.