Transmission will not go into any gears

2010 CHEVROLET COBALT
165,648 MILES • 2.2L • 2WD • AUTOMATIC
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BURNATT#62
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Won't shift into any gears. Started with transmission leak, found out that both bands reverse and intermete bands were bad,so replaced both bands. also replaced pressure sensor solenoid valve, and replaced out put speed sensor and new transmission pan and gasket and filter.checked both shift solenoids are good.cable is fine. I put it in neutral and you hear a high pitch sound.and speedometer not working.replaced transmission fluid with VI transmission fluid as owner manual says,put 7 quarters.some leaked out.but isn't leak in anymore.just won't shift into any gears?
Nov 18, 2019 at 1:23 PM
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STRAILER
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Hello,

The high pitched sound is troublesome. When you installed the transmission was the torque converter installed correctly? Here is a video to show you how:

https://youtu.be/ZC7xHVMKLRw

Can you please shoot a quick video with your phone so we can hear the noise? that would be great. You can upload it here with your response. Please run down this guide and report back.
Nov 20, 2019 at 10:36 AM