Hi guys I bought gmc suburban 2 years ago has only 40,000k on it once I took it for ride through my country start to make noise under the hood once I opened the hood really I couldn't realize from where it came that sound also video attached. Also I took it to the dealership they told me we have to open it up all the engine a part so we can catch the problem. That will cost me much money.!
Here is the video

 

Up up

 

Try using a mechanics stethoscope to isolate the location - but be careful around belts and pulleys. That sounded more like a pulley bearing noise than the internal motor to me.

 

No all have been checked thro the dealer. All working properly
Thanks for your reply.

 

Agree use stethoscope to isolate. Don't trust the dealer they're not always correct. Remove the belt start engine noise gone? If so spin each pulley by hand with engine off use stethoscope again to isolate.

 

I would expect an internal motor noise to be more constant; that noise screams external part to me.

 

Thanks guys really I have been f**ked up with it I swear I don't know what I'm gonna do for it cause after that noise I didn't even start it up almost battery died now ��