Weird noise

[Jersey Tahoe LT]

I started my truck this morning and started driving and all of a sudden I got a humming noise.  Sounded like an electric motor that has run out of oil in the bushings.  I couldn't really find the noise but it went away about 1 min after it started.  It is really rainy so could it just have been the moister in a fan or wiper motor or something like that?  Was just really wierd.

 

Thanks in advance.

 

Later,

Brandon

[dukbludvl]

Brandon -- it could be the fan that is behind the radio system in the dash.  I believe it is there to cool that area down since it gets so hot when it's on.  I could be wrong, but I've definitely heard that on my Yukon quite often.  Anyone else think it might be this?  If it's this, it is normal, I believe.

Jon

[seadoons]

Jersey,

 

I know exactly what you are talking about - mine comes on randomly and I didn't know what it was at first.  It really frustrated me, so I ended up pulling out the radio to find that there was a fan back there.  The way my fan sounds doesn't fit the description of what Brandon is talking about - mine usually comes on after the truck has warmed up a bit, and it sounds like his was cold.  No suggestions.

[Wingnut]

Might be the bearings in the blower motor for the HVAC system starting to go bad.

 

Mine would squeak every now and then for a few months, and then....snap, crackle, pop......the elves took it to the land of Og.

 

They are about 30-50 smackers, depending on who you call.