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Discussion Starter · #1 ·
Hello, Everyone. Brand new to the site and looking for some insight/help.

Got a 2003 Bravada AWD with about 50,500 miles, and the last few days it has started to whine/hum. Sounds like it is coming from the front end. The frequency of the whine/hum is speed related not RPM related. Any words of wisdom would be greatly appreciated.
 

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2002 gmc envoy_slt
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Check the front transfer case and front diff to make sure they have sufficient fluid, either will cause a good wine that varies with speed.
 
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