1998 Chevy Truck Switch only works on low and high

1998 CHEVROLET TRUCK
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CHELLE1111
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Heater problem
1998 Chevy Truck 6 cyl Two Wheel Drive Automatic

My 1998 Chevy (WT) truck's fan only works on low and high. My fan also makes a high pitched squeeling noise. I also hear fluid sloshing on the passenger side heater area and i'm loosing small amounts of antifreese but don't smell anything. What should I tackle first?
Sep 3, 2009 at 10:33 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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