1997 Chevrolet C2500 Suburban Engine: 6.5L V8; Reverse Rotation|Severe Duty Thermal Fan Clutch;. 1998 Chevrolet C2500 Suburban Engine: 6.5L V8; Reverse Rotation|Severe Duty Thermal Fan Clutch;. 1999 Chevrolet C2500 Suburban Engine: 6.5L V8; Reverse Rotation|Severe Duty Thermal Fan Clutch|Bolt-On Type|Marked GPC;.