Serpentine belt is squealing

Tiny
JOELROSS
  • 2003 CHEVROLET SILVERADO

V8 four wheel drive automatic 191,000 miles.

How do I tighten up my belt? My buddy told me that was why I was hearing a squealing noise when my engine is running, idle or revved.

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Wednesday, April 15th, 2009 AT 12:27 PM

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Tiny
OBXAUTOMEDIC
  • EXPERT
  • 3,781 POSTS

Hello,

You cannot tighten the belt it has an automatic tension-er on it.

But before you go ant replace it here it something to try.

Find the location of your tension-er pulley and your idler pulley then with a spray lube and the engine off spray the center bolt of one of the pulleys. Then start the vehicle. If noise is gone for short time then the bearings are going back and you will need to replace that pulley. If noise is still there then turn vehicle off and spray other pulley in same manner and restart if noise is gone for short time replace that pulley. While doing this also watch the tension-er assembly for excessive movement. Also, when was the last time you replaced the belt? An old worn belt can cause the squealing also.

If you need diagram will need more info on you truck.

Is it a 1500, 2500 etc and is it 4x4 or not and engine size in liters.

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Wednesday, April 15th, 2009 AT 1:10 PM
Tiny
JOELROSS
  • MEMBER

1500 ext cab lb, 4x4, 5.3 L v8.

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Wednesday, April 15th, 2009 AT 1:56 PM
Tiny
OBXAUTOMEDIC
  • EXPERT
  • 3,781 POSTS

Here are the diagrams:


http://www.2carpros.com/forum/automotive_pictures/188069_03silvr1500_53_serpbeltroute_1.jpg




http://www.2carpros.com/forum/automotive_pictures/188069_03silvr1500_53_acbeltroute_2.jpg



.

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Wednesday, April 15th, 2009 AT 8:27 PM

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