Express 1/2 Ton Van V6-4.3L VIN W (1999)
12. Disconnect the by-pass hose from the water pump.
13. Remove the heater outlet hose from the water pump.
14. Remove the water pump mounting bolts.
15. Remove the water pump and the gasket.
16. Clean and inspect the sealing surfaces of the engine block.
17. Clean the water pump mounting bolts, and check the threads for damage.
Installation Procedure
