Squeak from Serpentine Belt Area

black tahoe 08 · Friday at 4:07 PM

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 · Friday at 5:34 PM

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.

Fless · Friday at 6:12 PM

Welcome to TYF!

Moved you here from the Midwest Regional Forum.

Be sure to remove the A/C belt, too.

jfoj · Friday at 6:28 PM

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 · Friday at 7:38 PM

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 preventative mx.

OR VietVet · Saturday at 12:50 AM

donjetman said:
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 preventative mx.

Good call.

swathdiver · Saturday at 1:09 AM

black tahoe 08 said:
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

It's time to take a mechanic's stethoscope or long extension to isolate this sound. If you have long hair, get it out of the way. Stick one end in your ear and touch the various parts to isolate the source of the sound. Be careful.

Joseph Garcia · Saturday at 10:41 AM

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

kbuskill · Saturday at 11:49 PM

You said you have only had it about 2 months. Do you have any maintenance records?

It is also possible that the power steering pump pulley is slightly out of alignment which will cause the belt to squeak.

Stick a straight edge across the face of the various pulleys to see if there is any misalignment.

dyce51 · Monday at 3:14 PM

I chased and chased a "squeak" on one of the accessories on cold start one time...ended up being the water pump...

Squeak from Serpentine Belt Area

black tahoe 08

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OR VietVet

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Fless

jfoj

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donjetman

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OR VietVet

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swathdiver

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Joseph Garcia

kbuskill

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