10R80/10L90 10-Speed Solenoid Function
The first thing to remember when replacing the valve body and/or just the solenoids is the TCM will have to be updated. This is very similar to what has been covered in the past with the 8L90 found in GM vehicles referred to as solenoid characterization. The 10R80 solenoids are similar to the 6R140W solenoids referred to as solenoid body/strategy identification.
