2007 Tahoe engine video! Help! Chatter!

07-04-2015, 08:26 PM

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2007 Tahoe engine video! Help! Chatter!

At idle I hear a chatter or jackhammer noise... Here's a vid... Thoughts?

Is it the AC belt tensioner?

07-05-2015, 11:47 PM

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Definitely sounds like a bearing on its way out. Take the belts off, see if it goes away.

07-06-2015, 07:58 AM

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if u think its a tensioner bearing, spray some wd40 on the bearing from the back while its running. if it quiets down you found your noise