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How to tell if fan clutch needs replaced

(2005 GMC Savana 2500)
in East Saint Louis, IL on July 02, 2011
air condition is not as cool as it was last year
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Popular Answer
The fan clutch on a truck driven of the engine either fails and causes the engine to run hot (the gel in the hub leaks out and no longer is able to expand and "lock up" to cool the engine the other way it fails is it "lock up" and fails to release causing a load noise all the time. Its function does not affect a/c output.Poor a/c operation is normally low refrigerant charge.
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