2004 Buick Rendezvous


ian maclean

January, 9, 2009 AT 10:11 PM

Engine Cooling problem
2004 Buick Rendezvous 6 cyl Front Wheel Drive Automatic 50000 miles

how do you change the thermostat what do you have to remove to get at it


3 Answers



January, 9, 2009 AT 10:26 PM

To better assist you, could you please list the engine size? 3.4L or 3.6L engine? Also the 8th digit of VIN will be helpful as well.

Thanks for using 2carpros. Com!


ian maclean

January, 10, 2009 AT 12:51 PM

The vin no. Is3g5da03e24s58o878 and the engine is 3.4



January, 10, 2009 AT 12:57 PM

Great, thanks for that info.

Below are the removal/installation instructions for your thermostat.

Remove the air cleaner and duct assembly.
Drain the coolant until the coolant level is below the thermostat.
Remove the crossover exhaust pipe.
Remove the radiator hose from the thermostat housing.
Remove the thermostat housing bolts and clean any sealer from the bolt threads.

(Removing the housing bolts)

Remove the thermostat housing and gasket.
Remove the thermostat.
Clean the mating surfaces.

(The removal and installation of the thermostat)

Install the thermostat.
Install the thermostat housing and gasket.

NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the thermostat housing bolts and tighten them to 18 ft. lbs. (25 Nm).
Install the radiator hose to the thermostat housing.
Install the crossover exhaust pipe.
Install the air cleaner and duct assembly.
Fill the cooling system.

Hope this helps..
Thanks for using!

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