Behind the dash board, it sounds like a weird whining grinding noise. I installed new wheel hub bearings. Not the problem, i got responses from 5 diff people. IDK WHAT THE PROBLEM IS!! DOES ANYONE ELSE HAVE OR HAVE HAD THIS PROBLEM AND IF SO, WHAT DID U DO ABOUT IT AND/OR WHAT IS IT!!
2000 CHEVROLET BLAZER
4.3 LITRE 4 DOOR 4WD.
98,000 MILES

 

How loud is this noise? Does it vary with engine speed? Who told you this was the wheel bearing assembly and why?

*Moving to 2nd Gen Tech* - Gen Chat is not the place for tech questions. Now turn off the damn CAPS key. We do not need to be yelled at!

 

If it stops after pressing the gas a lil bit and its relatively quiet, than I have the same noise. I have no idea what it is though :/

 

ditto. i would also like to know what it is and if its something i should worry about.

 

Sounds like a heater blower motor. Does the noise change with fan speeds?

 

i have the same exact problem with my 96 blazer 4x4 it sounds like its coming from the dash but im pretty sure its not the blower motor..it tends to go away when i apply the gas, but does not vary with the blower motor...some please help..did you ever find out what it was. id like to know before i pull it all apart

 

believe it or not it is most likely your pcv valve that is causeing this noise. i had the same issue and it bugged me forever....as did londonmazda with his 96 he figured it out by accident while reaching around the motor he touched the vacum line and the noise stopped, we replaced the pcv and it went away i tried it and it fixed mine too. go under the hood with the engine running and reach down to the pcv valve and feel it, it is probably vibrating like mad... replace for 3 bucks and i bet the noise goes away.