Question about 1999 GMC Suburban

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Where is the Radiator cooling fan relay loacated?

I have a 1999 GMC Surburban K2500 4x4 7.4L. I need to know where is the radiator cooling fan relay located? My fan doesn't come on. I by pass it and put power to it and it is working. The dealer told me there are two different type for my Surburban. I gave the VIN. numbers.

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It is right next to the fuse box next to the inner wheel well next to a small black square box on either left or right side.

Posted on Jul 26, 2009

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How does Vehicles Engine cooling system works? http://repairhelpcenter.blogspot.com/2011/11/how-does-vehicles-engine-cooling-system.html
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http://schematicsdiagram.blogspot.com/2011/12/where-is-radiator-fan-relay-and-fuse.html

--------

This will help.

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This details will help.

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1 Answer

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radiator fan ctrl rly circuit wire harn observable defect
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radiator fan relay control circuit short to ground
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pcm defective

Check ot and keep us updared.

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