2 - 3 - 4 - 6 - 8 Clutch Releases
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
2 - 3 - 4 - 6 - 8 Control Solenoid
The 2-3-4-6-8 control solenoid is signaled off allowing S4 VFS SIG fluid to exhaust. Spring pressure shifts the valve to allow 23468 CLUTCH fluid to exhaust into EX BACKFILL from the 2-3-4-6-8 clutch assembly housing.
2 - 3 - 4 - 6 - 8 Clutch Assembly
The 2-3-4-6-8 clutch is released allowing 23468 CLUTCH fluid to exhaust thru the 2-3-4-6-8 control solenoid.