Hi there
The code P0776 is for the clutch pressure solenoid. This could be the result of low or dirty transmission fluid, the solenoid or a problem with the TCM. Here is some more info on the code.
P0776 CHEVROLET - Clutch Pressure Control Solenoid 2 Stuck Off Read more: https://www.autocodes.com/p0776_chevrolet.html
P0700 is basically and information only code that there is an issue with the transmission control system.
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