Envoy 4WD V8-5.3L (2007)
Water Pump: Service and Repair
WATER PUMP REPLACEMENT
Tools Required
J 38185 Hose Clamp Pliers
Removal Procedure
1. Drain the cooling system. Refer to Draining and Filling Cooling System (LL8) Draining and Filling Cooling System (LH6, LS2).
2. Loosen the air cleaner outlet duct clamps at the following locations:
^
Throttle body
^
Mass air flow (MAF)/intake air temperature (IAT) sensor
3. Remove the air cleaner outlet duct bolt and duct.
4. Remove the accessory drive belt tensioner. Refer to Drive Belt Tensioner Replacement - Accessory for the 5.3L engine or Drive Belt Tensioner
Replacement - Accessory for the 6.0L engine.
5. Remove the cooing fan and shroud. Refer to Cooling Fan and Shroud Replacement.
6. Using the J 38185, reposition the inlet hose clamp at the water pump.