Part Type: Engine Cooling Fan Clutch. Reverse Rotation Severe Duty Thermal Fan Clutch. Fan Clutch. 1997 Chevrolet C1500 Suburban Engine: 6.5L V8; Counter Clockwise; Severe Duty Thermal Fan Clutch;. 1999 Chevrolet C1500 Suburban Engine: 6.5L V8; Counter Clockwise; Severe Duty Thermal Fan Clutch; Bolt-On Type;.