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2007 Chevy Cobalt LS, 2.2 Liter
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I’ve got an 07 cobalt, LS COUPE, 2.2 Lt. It’s making a weird noise that seems to be in driver side engine bay by the trans axle, master cylinder. It’s a high pitched squeal in rhythm. I attached a recording. Any thoughts.

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Can’t hear the sound, says it deleted. But there’s a few things that can go wrong in that area.

There’s a transmission mount that inserts into the frame and can fall apart making the mount go metal on metal.

Inside the transmission, I assume it’s automatic? If one of the shift solenoids goes bad and quits working, the hydraulic pump makes some weird sounds, could be bypassing fluid in the valve body.

Transmission also has bearings inside that occasionally go bad.

These are things I can think of when the car is running but not moving.
 
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