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1999 - 2002 Silverado Fan Clutch Replacement 5.3


This is a discussion on 1999 - 2002 Silverado Fan Clutch Replacement 5.3 within the Tech How To forums, part of the TMC TECHNICAL category!
Well, here we are boys. Time to replace the ole fan clutch. You can tell when its bad in a ...

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Old 02-12-2010, 09:53 PM
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1999 - 2002 Silverado Fan Clutch Replacement 5.3

Well, here we are boys. Time to replace the ole fan clutch. You can tell when its bad in a few ways, idling and overheating and you can grab the fan, and free spin it with minimal effort. It should be snug and hard to spin. With that being said.. heres how to replace it. I have the 5.3 engine.

Tools you will need.

Flathead screw driver
1/4 inch ratchet
11mm 1/4 Socket DEEP
Big Cresent Wrench
Magnetic Tray
Ladder ( applies to me and lifted trucks )
Flash Light if dark

Culprit

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Remove the radiator hose clip from the shroud, just pull up on it and it will come free.

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Remove the overfill drain hose from the shroud as well.

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Remove the bottom 11mm nut on each side of the fan shroud.

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Now remove the 4 clips that hold the top shroud piece to the lower piece. For this, take a flat head screw driver, pop up the pin in the middle, then pull the entire clip out.

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Now pull out the top shroud piece, it comes easier i think if you lift the drivers side end out first.

The fan and the clutch

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Now, take a cresent wrench, adjust it to the correct size, and place it on the clutch nut.

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Take a hammer, and lightly hit the wrench towards the left, lefty losey righty tighty. Now you can just spin the fan counter clockwise and it will unthread and come off.

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Next step, put the new clutch on the fan.

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Take a 3/8ths ratchet and a 13 mm socket, and take off the 4 bolts holding the fan and clutch together.

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After the bolts are removed.. seperate the fan and the clutch and toss the old clutch away. grab the new one, and place the fan on it, make sure you keep it in the correct direction... or you wont pull air.. you will push it. Tighten the bolts to snug, then i go 1/4 turn to nice and tight.

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Together.

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Now, take the new clutch and fan, and thread it back on to the pulley. Tight is clockwise. When it comes to a stop (snug) take the cresent wrench, and put it on the nut, take a hammer and give the cresent wrench a nice firm touch. I tend to do it a couple times, just to make sure its snug. Once its on, replace the shroud back into place, put the 4 clips in it, tighten the 2 11mm nuts, replace the radiator clip back to its location as well as the overfill hose, and you are done.

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Old 02-12-2010, 09:59 PM
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Nice write-up! You make it look so easy!
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Old 02-12-2010, 10:00 PM
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Old 02-12-2010, 10:03 PM
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I didn't know you had a body lift. It's obvious in this pic.

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Old 02-12-2010, 10:05 PM
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I didn't know you had a body lift. It's obvious in this pic.

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yeah no one ever notices it.. i have custom gap guards, and it all looks proper. Only thing that gives it away is the running boards arent tucked up again the body.
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Old 02-12-2010, 10:06 PM
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POSER!!!!










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Old 02-12-2010, 10:07 PM
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POSER!!!!










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Old 02-12-2010, 10:08 PM
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I honestly never could tell. That's how it is when you do it right!
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Old 02-12-2010, 10:10 PM
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I honestly never could tell. That's how it is when you do it right!
Nor could I.
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Old 02-12-2010, 10:11 PM
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Well it helps when you also have Godzilla suspension!
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