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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (Automatic Transmission - 8L90 (M5U) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Control Valve Lower Body Assembly Cleaning And Inspection

Control Valve Lower Body Assembly Cleaning And Inspection

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Control Valve Solenoid Body Exploded View
GM3681792Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
WARNING:

Valve Springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.

CAUTION:

After cleaning the transmission components, allow to air dry. Do not use cloth or paper towels in order to dry any transmission components. Lint from the towels can cause component failure.

CAUTION:

Do not reuse cleaning solvents. Previously used solvents may deposit sediment which may damage the component.

Preliminary Procedure Clean and inspect all valve components and the valve body. The control valve lower body is replaceable only as an assembly.Special Tools DT-50914  Solenoid Valve Retainer Remover/InstallerFor equivalent regional tools, refer to Special Tools .
1 TCC Control Solenoid Valve Train
2 2-3-4-6-8 Control Solenoid Valve Train
3 1-3-5-6-7 Control Solenoid Valve Train
4 4-5-6-7-8 Reverse Control Solenoid Valve Train
5 1-2-7-8 Reverse Control Solenoid Valve Train
6 1-2-3-4-5 Reverse Low Solenoid Valve Train
7 1-2-3-4-5 Reverse Clutch Boost Valve Train
8 Manual Valve
9 Solenoid Valve Assembly Bolt
10 Default Control Solenoid Valve
11 Control Solenoid Valve Retainer
12 Line Pressure Control Solenoid Valve
13 Solenoid Valve Assembly Bolt
14 1-2-3-4-5 Reverse Boost Solenoid Valve
15 Converter Feed Limit Valve
16 1-3-5-6-7 Accumulator Piston