Question about 2004 Chevrolet TrailBlazer
I no how to do a little bit but need to no for sure how to take off fan blade on 04 trail blazer
There is a big nut that is part of the fan clutch that unscrews from the water pump .I use a long punch to break it loose then a big adjustible wrench.
Posted on Aug 26, 2008
Fan Clutch Wrench Part #: J-41240 or J-46406
This can usually be purchased at most Auto Zone or Advance Auto Parts Stores. We can also supply you this wrench with your fan clutch order. Please email or call us and we can add it to you order or you can usually add it when going through checkout. Please call us with any questions 1-866-770-2771
CAUTION: It is not recommended to disconnect the battery on any later model vehicle unless specified in repair instructions. Disconnecting the battery can cause the vehicle computers to lose valuable memory data and can actually cause driveabillity problems. If you do disconnect the battery, a computer relearn procedure must be done to bring vehicle back to normal.
Remove Cooling Fan & Shroud
Remove the hood latch support
Disconnect the transmission cooler lines at the engine and release the lines from the fan shroud. NOTE: Many customers have stated that the cooler lines do not need to actually be disconnected, removing them from the shroud is all that is normally needed to get clearance
Remove the 2 upper fan shroud bolts
Drain approximatly 1 Qt. of coolant
Reposition the upper inlet radiator hose clamp
Remove the upper inlet radiator hose from the radiator
Remove the electrical connector from the shroud
Position the water pump so the bolts are aligned in the vertical position
**Important note** If you cannot get the special wrench or a suitable spanner wrench you may use a really big crescent or 1 3/8 to a 1 1/2 wrench with a hammer after some penetrating fluid. Mine was really torqued.
Use the fan clutch wrench to loosen and remove the fan clutch hub nut. NOTE: This is removed by turning it in a counter-clockwise rotation while facing the vehicle. NOTE: The fan clutch wrench has 2 tabs that lock into the water pump to allow you to hold it while using the other piece of the wrench to turn the nut.More tips are below in our customer's installation tips.
Unclip the fan shroud from the radiator side panels.
Tilt the radiator and the condenser forward
Lift the fan and the shroud up and out towards the engine to release the fan from the radiator inlet
With the entire assembly out, remove the bolts retaining the fan blade to the fan clutch
Seperate the blade from the clutch
**Important note** While you have everthing out check your belt for excessive wear. Easier to install with stuff out out of the way.
* Install the fan blade onto the clutch and install the 4 bolts. Torque these bolts to 20 Ft./Lbs.
* Install the fan & shroud onto the lip of the radiator bottom.
* Install the 2 bolts into the upper fan shroud and tighten to 21 Ft./Lbs.
* Connect the electrical connector
* Clip the fan shroud to the radiator at the side panels
* Install the fan clutch onto the water pump shaft and tighten in a clockwise rotation with the fan clutch wrench. The torque on this nut is 41 Ft./Lbs
* Tighten or re-install the transmission cooler lines and clip them back into the fan shroud
* Install the hood latch
* Install the upper radiator hose and reposition the hose clamp
* Fill the cooling system
* Check with the dealer for any PCM software updates. These are very important!!
NOTE: Some vehicles require the PCM to be updated for a software problem with the fan clutch. You are surely fam
Posted on Apr 05, 2009
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