Trans noise

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07-29-2012, 12:46 PM

brutis5

Junior Member

Thread Starter

Join Date: Dec 2007

Posts: 7

Trans noise

Crazy clicking noise coming from tranny. I disconnected the converter and there's no noise. It kinda quiets down when it warms up. When it is cold it clicks real loud and it changes to a different tone when in gear. I dropped the pan and it is spotless. Would the solenoids make all that noise? Car is a 2005 CTS, 3.6 ......

Last edited by brutis5; 07-31-2012 at 08:14 PM. Reason: never put year and make.

08-08-2012, 12:23 PM

Adams' Apple

Tech Certified Members

Join Date: Sep 2009

Location: Duncanville, Texas

Posts: 409

I've never heard of the solenoids in the 5L40E being noisy. Also, you stated that disconnecting the converter eliminated the noise, so the noise is mechanical. We are seeing a lot of pump failures on this trans, so that may be what you are experiencing.
Does it make this noise all the time, only while sitting still, or when moving?
Does it change with RPM?
Does it change with MPH?