I recently purchased a 99 SE-Limited with an automatic transmission. I have noticed a slight buzzing sound at the front of the engine. Through further investigation, the buzzing sound is coming from the transmission. I can place my hand against the transmission pan and you can feel it vibrating inside. I can only assume this is where the valve body is. What would cause this buzzing and how do I fix it? I have noticed that when I press the accelerator pedal about an inch or two that the buzzing just about goes away. As soon as I let the pedal back up the buzzing becomes more noticeable. Any ideas or suggestions?

 

What caused it? Is it low fluid?

 

Welcome to 8 years ago.

 

True dat...

But sadly in 8 years this question has never been answered.... In any of the threads I've pulled up too...

 

I agree.

Ninos_Maxima and I encountered this problem on his 99 GLE when we got done putting his stock plenum and stuff back after he changed his mind on 00vi. Problem turned out to be a disconnected ECU that Mr Duck disconnected while assisting him with the 00vi days prior to that.

Hope that kind of helps.