C 1500 Truck 2WD V8-5.3L VIN T (1999)
Water Pump: Testing and Inspection
1. Remove the old gasket material from the water pump sealing surfaces. Refer to Replacing Engine Gaskets.
2. Clean all of the excess dirt and the debris from the water pump housing.
3. Inspect the water pump for the following conditions:
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The gasket sealing surfaces for excessive scratches or gouging
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Restrictions within the internal coolant passages
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Excessive side-to-side play in the pulley shaft
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Leakage at the water outlet housing or the rear cover gasket
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Leakage at the water pump vent hole
A stain around the vent hole is acceptable. If leakage occurs (dripping) with the engine running and the cooling system pressurized, replace the
water pump. Refer to Water Pump Replacement or Water Pump Replacement (4.8L, 5.3L, 6.0L).
4. Inspect the water pump pulley for wear or damage in the belt tracking area.
