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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission - 8L90 (M5U MQD) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Control Valve Assembly and Transmission Wiring Harness Removal >> Control Valve Body Assembly Removal

Control Valve Body Assembly Removal

WARNING: This page is about a different variant/trim than selected.
GM3971594Courtesy of GENERAL MOTORS COMPANY
Control Valve Body Assembly Removal

Callout Component Name
1 Manual Shift Detent Lever Spring Bolt M6 x 25
2 Manual Shift Detent Lever Spring
3 Wiring Harness Connector
Procedure 
Disconnect the wiring harness connector from the manual shift shaft position switch.
4 Wiring Harness Connector
Procedure 
Disconnect the wiring harness connector from the automatic transmission wiring harness.
5 Manual Valve
Procedure 
Disconnect the manual valve from the manual valve link.
6 Control Valve Solenoid Body Bolt M6 x 68 [7x]
NOTE:

Do not remove all the bolts in the control valve body assembly. Remove only the bolts indicated.


Special Tools 
DT-48285  Valve Body Torx Plus Socket
Equivalent regional tools:Special Tools
7 Control Valve Solenoid Body Bolt M6 x 45 [4x]
NOTE:

Do not remove all the bolts in the control valve body assembly. Remove only the bolts indicated.


Special Tools 
DT-48285  Valve Body Torx Plus Socket
Equivalent regional tools:Special Tools
8 Control Valve Body Assembly
CAUTION:

Use care when handling the control valve body assembly. If dropped, damage to the control solenoid valve body assembly internal components may result.

9 Automatic Transmission Case Front Cover Bolt M6 x 25 [3x]
CAUTION:

This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component. Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.


Procedure 
Remove and DISCARD the bolts.
Special Tools 
DT-48285  Valve Body Torx Plus Socket
Equivalent regional tools:Special Tools
10 Automatic Transmission Output Speed Sensor Wiring Harness
11 Clutch Housing Fluid Passage Seal
Procedure 
DISCARD the seal.