Chevrolet Silverado / GMC Sierra. Manual - part 802
CONTROL VALVE LOWER BODY ASSEMBLY CLEANING AND INSPECTION
Fig. 180: Control Valve Lower Body Assembly Cleaning and Inspection
Courtesy of GENERAL MOTORS CORP.
plate. Reusing an old spacer plate may cause internal
transmission leaks and transmission damage.
6
Control Valve Body Ball Check Valve (Qty: 7)
Tip: Note the position of the ball check valves.
7
Control Valve Upper Body Assembly
Tip: Refer to Control Valve Upper Body
Assembly Cleaning and Inspection.
Callout
Component Name
Preliminary Procedure: Clean and inspect all valve components and the valve body. The
control valve lower body is replaceable only as an assembly.
CAUTION:
Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal
injury could result.
1
Clutch Piston Dam Feed Regulator Valve Train
2
Clutch Select Solenoid Valve 2 Train
3
Clutch Select Solenoid Valve 3 Train
4
Manual Valve
5
TCC Regulator Apply Valve Train
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
CONTROL VALVE UPPER BODY ASSEMBLY CLEANING AND INSPECTION
Fig. 181: Control Valve Upper Body Assembly Cleaning and Inspection
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
Preliminary Procedure: Clean and inspect all valve components, locating pins, and the
valve body. The control valve upper body is replaceable only as an assembly.
CAUTION:
Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal
injury could result.
NOTE:
Do not remove the clutch piston exhaust blow off ball plug, valve, or spring. The plug is set to a
precise depth. Replacement of this plug could cause internal transmission damage.
1
Clutch Boost Valve Train
2
1-2-3-4 Clutch Regulator Valve Train
3
3-5 Reverse Clutch Regulator Valve Train
4
Clutch Boost Valve Train
5
2-6 Clutch Regulator Valve Train
6
Clutch Boost Valve Train
7
CBR1/4-5-6 Clutch Regulator Valve Train
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
CONTROL VALVE BODY ASSEMBLY ASSEMBLE
UPPER TO LOWER CONTROL VALVE BODY ASSEMBLY ASSEMBLE
Fig. 182: Assembling Control Valve Body Assembly
Courtesy of GENERAL MOTORS CORP.
Upper to Lower Control Valve Body Assembly Assemble
8
Actuator Feed Limit Valve Train
9
Control Valve Body Locator Pin
10
Control Valve Body Locator Pin
11
Control Valve Body Locator Pin
Callout
Component Name
Control Valve Body Ball Check Valve (Qty: 7)
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
FILTER PLATE INSTALLATION
1
Tip: Refer to Ball Check Valve Locations .
NOTE:
Do not use any type of grease or other material to
hold the check ball valves in place during
assembly. Grease will cause the valves to not
operate properly, resulting in damage to the
transmission.
2
Control Valve Body Spacer (w/Gasket) Plate
Assembly
NOTE:
Do not use the old spacer plate. Install a NEW
spacer plate. Reusing an old spacer plate may
cause internal transmission leaks and transmission
damage.
3
Control Valve Lower Body Assembly
Tip: Turn the valve body assembly over after
installing to upper body.
4
Bolt M5 x 36 (Qty: 12)
Procedure:
Tighten the bolts in the sequence shown.
Tighten: 8 N.m (71 lb in).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado