03 Tahoe engine fan noise

Yeah, it's pretty much normal. Mine seems to do it randomly during the spring through fall.

The only thing to note, is that it's not the computer doing the switching. It's a regular old clutch-fan.

-marc

Wrong. This is normal. The fan clutch is locked when it's both dead cold and nice and hot. It takes a few minutes to get warm enough after a cold start to release.

Doc

this....true

When the radiator blows? I'd LOVE to hear how the fan clutch going bad and the radiator blowing are related, do tell...

Or is it just troll season again? Thought this would have happened when it was below zero and all the trolls were inside trying to get away from the bitter cold, thought they'd all be back under bridges by now.

Mayhaps when the fan dies the engine over heats and then boils over?

~KJ~ >have problems when the radiator blows.

Get a new fan quick! That one is getting ready to go, then you'll really have problems when the radiator blows.

I've seen a fan clutch seize up, then come off and go into the back of the radiator, hence the radiator "blows"! :>)

That's what I would call a catostrophic failure! I was thinking more along the lines of just failing to work properly like mine did and it locked up MORE than it should have been. Wouldn't be overheating in that case...