rbjax

I have a '02 avalanche that makes a whinning noice in the mornings when you first crank up. It is kinda high pitched that goes along with the rpm. After a couple of miles the engine gets warm and the whinning goes away.

Power steering fluid is ok with no leaks and does not make unusal noise when steering wheel is turned either way.

Truck has 132,00 miles on it.

Any ideas?
thanks,
Ron

espop125

Mine does the same thIng let me know if you figure it out

adam86107

Could just be the belt

Chevrolet Customer Service

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It may be your drive belt. That is just a suggestion, not a diagnosis. It is difficult to diagnose without a physical inspection. You may want to consider taking the vehicle in. A technician should be able to offer a more accurate solution.

Have a great day!

Please feel free to contact me with any additional questions.

Louis
GM Customer Service

cleveland63b

sounds like a belt....make sure to check both the A/C belt is kind of hard to see if you don't take intake ducting off

sancho

my 07 with 100,000 miles was doing that, i changed the serpentine belt myself and that fixed the problem. about 30$

AnthonyKeene

From my experience, if you can see the fan motor when you have the glove box out, hold on to it while you cycle thru the speeds to see if there is a marked change in vibration at different speeds. If so, you might need a motor.

Anthony

cleveland63b

blower motor wouldn't respond to rpm