Chevrolet Silverado / GMC Sierra. Manual - part 784
Fig. 134: Installing Low And Reverse Clutch Piston
Courtesy of GENERAL MOTORS CORP.
Low and Reverse Clutch Piston Installation
Callout
Component Name
1
Low and Reverse Clutch Piston Assembly
Tip: Lubricate the inner and outer sealing surfaces of
the piston assembly with automatic transmission fluid
(ATF) in order to ease installation into the center
support assembly.
Low Clutch Sprag Seal
NOTE:
Refer to Seal Reuse Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
LOW AND REVERSE CLUTCH PLATE INSTALLATION
2
Tip: Apply ATF to the DT 47780 to ease seal
installation. See Special Tools.
Special Tool:
DT 47780 Low Clutch Sprag Seal Cone. See Special
Tools.
3
Low and Reverse Clutch Spring
NOTE:
Ensure the spring tabs are facing up during installation.
Failure to do so may cause damage to the clutch assembly.
4
Low Clutch Sprag Assembly
Tip:
Verify that the low clutch sprag is operating
correctly. Refer to the illustration for proper
freewheel direction.
Ensure the missing splines on the sprag assembly
are aligned with the missing splines on the center
support hub.
5
Low and Reverse Clutch Spring Retaining Ring
Special Tools
DT 47778-1 Low Clutch Sprag Retaining Ring
Cone. See Special Tools.
DT 47778-2 Low Clutch Sprag Retaining Ring
Pusher. See Special Tools.
DT 47779 Clutch Spring Compressor. See
Special Tools.
NOTE:
Ensure the DT 47779 contacts the sprag assembly and not
the sprag retaining ring. Damage to the sprag may result.
NOTE:
The retaining ring gap must be aligned with the 3 missing
splines on the center support hub. Failure to do so may
cause damage to the clutch assembly.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 135: Low and Reverse Clutch Plate Installation
Courtesy of GENERAL MOTORS CORP.
Low and Reverse Clutch Plate Installation
Callout
Component Name
1
Low and Reverse Clutch (Waved) Plate
2
Low and Reverse Clutch Plate (Qty: 6)
3
Low and Reverse Clutch Plate Assembly (Qty:
6)
4
Low and Reverse Clutch Backing Plate
5
Low and Reverse Clutch Backing Plate
Retaining Ring
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
4-5-6 CLUTCH DAMPENER OVERHAUL
Fig. 136: Overhauling 4-5-6 Clutch Dampener
Courtesy of GENERAL MOTORS CORP.
Tip: Apply air to verify proper installation of
all low and reverse clutch components.
Callout
Component Name
1
4-5-6 Clutch Dampener Retaining Ring
NOTE:
Ensure the retaining ring is fully seated when installed.
Using a screwdriver, fully seat the retaining ring into the
groove by pushing on the inside diameter around the whole
circumference. If the retaining ring is not fully seated,
transmission damage will result.
2
4-5-6 Clutch Dampener Apply Plate
4-5-6 Clutch Dampener
Tip: Dry and inspect the clutch dampener for the
following conditions:
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado