All belts are off and still have noise
It is possible that the harmonic balancer is slipping back into the timing chain cover making the scraping noise. If the vehicle has electric fans, a fan motor could be bad.
SOURCE: 2004 Chevy Tahoe stereo wiring diagram
BLACK-ground
RED-accessorie
YELLOW-power 12v
PURPLE-left rear
GREEN-right rear
WHITE-left front
GREY-right front
BLUE-REMOTE
and the other blue one is for remote antenna..
SOURCE: My 2004 chevy tahoe makes a squeaking noise while
If the squeeking is happening over bumps, and is not related to breaking, it could be a bearing in the steering linkage. My tahoe is doing the same thing, and my local garage says it is only a dealer fix. That is why I am searching this site now, is to find out if anyone else is complaining about this. I was told that GM is fully aware of this problem.
SOURCE: power door locks on a 2004 chevy tahoe don't work
The door locks on my 1999 tahoe stopped working and I checked the fuse, which was fine. The problem turned out to be that the fuse for my cigarette lighter was bad and for some reason it also must be working in order for the door locks to work. Put in a new cigarette lighter fuse and the door locks worked again!
SOURCE: How do I stop my
Squealing is usually an indication of belt wear. Check the underside of the belt for worn or "shiny" spots. If it's worn it's slipping and is most likely not only the cause of the squeal but could impact the charging and cooling systems.
If the belt is in good shape and/or has been replaced recently, it may just need to be tightened. All new belts develop some play after initial installation after they have "broken in". If the belt is in good shape and is tight, the problem most likely lies elsewhere (bad bearing in waterpump or power steering pump, or alternator) I hope you found this post helpful. Best of luck!
Greg
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