Squeak from Serpentine Belt Area

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black tahoe 08

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I have an 08 Tahoe, new to me about 2 months ago. The serpentine belt is squeeking and I can't figure out how to stop it. I have changed the alternator, idler pully, tentioner, tensioner pully, and belt. Still driving me crazy
 

OR VietVet

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Welcome to the forum from Oregon.

I am gonna go out on a limb here. The belt is not squeaking. If you take the belt off and start the engine, is the noise still there? If it is, maybe the noise is related to the a/c. If the noise is gone, maybe the water pump has a noise.
 

jfoj

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My 2005 has a squeaking A/C clutch bearing. As I tell people, I have a tweety bird under the hood!

As mentioned, put the A/C belt and see what happens.
 

donjetman

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Could be the crank outer pulley separating from the inner hub which causes a misalignment. The inner and outer parts are held together by rubber that deteriorates with age. I changed mine recently as a preventative mx.
 

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