Removal and Installation
- Drain the engine cooling system. See «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-221821-S22848327452006022600000) .
- Remove the cooling fan motor and shroud. See «COOLING FAN»(ref-221821-S05481641472006022600000) .
- Remove the radiator. Loosen the hose clamps, disconnect the hoses and position them aside. Remove the radiator.
- To install, reverse the removal procedure.
Scheme 23
Scheme 24
- Drain the engine Cooling System. See «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-221821-S22848327452006022600000) .
- Remove the thermostat housing. See «THERMOSTAT HOUSING - 3.0L (4V)»(ref-221821-S42529581272006022600000) .
- Disconnect the hose for the thermostat housing and position aside.
- Disconnect the engine coolant temperature (ECT) sensor from the bypass tube.
- Remove the bolt, stud, and the water bypass tube.
- To install, reverse the removal procedure.
Scheme 25
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Scheme 27
- Drain the engine cooling system. See «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-221821-S22848327452006022600000)
- Remove the air cleaner outlet pipe. See «AIR CLEANER OUTLET PIPE -- 3.0L (4V)»(ref-221824-S25313461482006022600000) .
- Separate the thermostat housing.
- Remove the thermostat and the O-ring seal from the thermostat housing.
- To install, reverse the removal procedure.
Scheme 28
Scheme 29
- Drain the engine cooling system. See «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-221821-S22848327452006022600000)
- Remove the air cleaner outlet pipe. See «AIR CLEANER OUTLET PIPE -- 3.0L (4V)»(ref-221824-S25313461482006022600000) .
- Disconnect the five hoses from the thermostat housing and remove the thermostat housing.
- To install, reverse the removal procedure.
Scheme 30
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Scheme 32
- Drain the engine cooling system. See «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-221821-S22848327452006022600000) .
- Remove the thermostat housing. See «THERMOSTAT HOUSING - 3.0L (4V)»(ref-221821-S42529581272006022600000) .
- Remove the water pump belt. See «WATER PUMP BELT -- 3.0L (4V)»(ref-221817-S38649550912006022600000) or «WATER PUMP BELT -- 3.0L (4V)»(ref-221817-S38649550912006022600000) .
- Remove the water pump belt tensioner, if equipped.
- Remove the bolts and the water pump assembly.
- Separate the water pump from the water pump housing.
- To install, reverse the removal procedure.
Scheme 33
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Scheme 41
- Disconnect the battery ground cable. See «BATTERY DISCONNECT»(ref-221834-S42533501902006022600000) .
- Remove the grill assembly. See «BODY PANELS»(ref-221971) .
- Position the hood latch out of the way. See «HOOD LATCH»(ref-221981-S23747386402006022600000) .
- If equipped, remove the upper radiator tie strap.
- Raise and support the vehicle.
- Remove the lower center support bolt and the lower fan bolts.
- Lower the vehicle.
- Remove the upper center support nut and the upper center support.
- Disconnect the LH fan electrical connector.
- Remove the LH and RH upper radiator supports.
- Tilt the radiator forward for clearance.
- Remove the bolts and the LH cooling fan.
- If necessary remove the bolt and disconnect the electrical connector, remove the RH fan.
- To install, reverse the removal procedure.
Scheme 42
- Use a slide hammer or tools suitable to remove the cylinder block core plug.
- Inspect the cylinder block plug bore for any damage that would interfere with the correct sealing of the plug. If the cylinder block plug bore is damaged, bore for the next oversize plug. NOTE: Oversize plugs are identified by the OS stamped in the flat located on the cup side of the plug.
- Coat the cylinder block core plug and bore lightly with Threadlock 262 and install the cylinder block core plug.
Scheme 43
| CAUTION | Use care during this procedure so as not to disturb or distort the cup sealing surface. |
| CAUTION | When installed, the flanged edge must be below the chamfered edge of the bore to effectively seal the bore. |
- Use a tool suitable to seat the cup-type cylinder block core plug.
Scheme 44
| CAUTION | Do not contact the crown when installing an expansion-type cylinder block core plug. This could expand the plug before seating and result in leakage. |
- Use tool suitable to seat the expansion-type cylinder block core plug.
Scheme 45
- Drain the cooling system. See «COOLING SYSTEM DRAINING, FILLING AND BLEEDING»(ref-221821-S22848327452006022600000) .
- Raise the vehicle.
- Disconnect the block heater power cable from the block heater.
- Remove the block heater.
- To install, reverse the removal procedure.