Mechanics

CHEVY SERPENTINE BELT IS SQUEELING

2003 Chevrolet Silverado

Engine Mechanical problem
2003 Chevy Silverado V8 Four Wheel Drive Automatic 191000 miles

how do I tighten up my belt, my buddy told me that was why I was hearing a squeeling noise when my engine is running, idle or reved.
Avatar
Joelross
April 15, 2009.



Hello,

You cannot tighten the belt it has an automatic tensioner on it.

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

Find the location of your Tensioner 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 tensioner assembly for excessive movement. Also when was the last time you replaced the belt an old worn belt can cause the sqealing 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.

.

Obxautomedic
Apr 15, 2009.
1500 ext cab lb, 4x4, 5.3 L v8

Tiny
Joelross
Apr 15, 2009.
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



.

Obxautomedic
Apr 15, 2009.