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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LS >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 8L90 (M5U) - Description And Operation >> Description And Operation >> Drive Range, Second Gear >> 1 - 3 - 5 - 6 - 7 Clutch Releases

1 - 3 - 5 - 6 - 7 Clutch Releases

1 - 3 - 5 - 6 - 7 Control Solenoid 

The 1-3-5-6-7 control solenoid is signaled off allowing S3 VFS SIG fluid to exhaust. Spring pressure shifts the valve to allow 13567 CLUTCH fluid to exhaust into EX BACKFILL from the 1-3-5-6-7 clutch accumulator and the 1-3-5-6-7 clutch assembly housing.

Default Control Solenoid 

The default control solenoid is signaled off allowing S8 ON/OFF SIGNAL fluid to exhaust.