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kavalon
New User
| Posts: 7
| Joined: 12/11
Posted: 12/20/11
09:26 PM
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2003 gmc whinning noise replaced idler pullet, belt tensioner,new serpenien belt.removed belt from a/c still have same noise.any ideas as to where to go next? the noise comes and goes.some times it almost sounds like a whistle.
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Posted: 12/20/11
11:28 PM
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could it be a VACUUM leak???
when the plenum seals get damaged... the can whistle...
there are several things you can ***
pick up an automotive stethoscope.. harbor freight tools sells them.. autozone.. oreillys... most parts stores have them.. around 10 bucks.. you can use them to listen to different parts of the engine... hear the individual sounds every part makes...
you did not mention which exact motor... alldatadiy com has on their front page... access to the TSB titles.. its free... really... read through them.. see if anything comes across as your problem..
don't worry that there might be a lot of TSBs... they are possible problems that have happened to other similar models.. ...
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kavalon
New User
| Posts: 7
| Joined: 12/11
Posted: 12/21/11
12:16 PM
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thanks again waynep thats a great site nothing as to my problem but definitly saving the site for future use thanks again.oh its a 5.3ltr makes noise mostly at idle give it a shot of gas and will go away for a second. im starting to think its the bearing in the alt although it charges fine but i think i will get the scope and trace it back to the source.I probably wont get the noise now that i know how to find it lol.thanks again for your help
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