TrailBlazer 2WD L6-4.2L VIN S (2003)
Water Pump: Service and Repair
Water Pump Replacement (4.2L Engine)
Tool Required
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J 41240 Fan Clutch Wrench
Removal Procedure
1. Drain the coolant.
2. Remove the fan and shroud.
3. Remove the drive belt.
4. Using the J 41240, secure the water pump pulley and remove the water pump pulley bolts.
5. Remove the J 41240.
6. Remove the water pump pulley.
7. Loosen and remove the water pump bolts.
8. Remove the water pump.
9. Clean and inspect the water pump.
10. Discard and replace the gasket.
Installation Procedure