Chevrolet Silverado / GMC Sierra. Service manual — part 789
Fig. 146: 4-5-6 Clutch Plates Installation
Courtesy of GENERAL MOTORS CORP.
4-5-6 Clutch Plates Installation
4-5-6 CLUTCH BACKING PLATE RETAINING RING MEASUREMENT
Callout
Component Name
1
4-5-6 Clutch (Waved) Plate
2
4-5-6 Clutch Plate (Qty: 7)
3
4-5-6 Clutch Plate Assembly (Qty: 7)
4
4-5-6 Clutch Backing Plate
5
4-5-6 Clutch Backing Plate Retaining Ring
Tip: After the retaining ring is installed, determine
clutch piston travel in order to verify if the correct
selective retaining ring is being used. Refer to 4-5-6
Clutch Backing Plate Retaining Ring
Measurement.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 147: Measuring 4-5-6 Clutch Backing Plate Retaining Ring
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
Preliminary Procedures
1. Install the clutch assembly into a hole in the workbench
2. Zero out the dial indicator on the DT 47868-1 . See Special Tools.
Special Tools
DT 47868-1 Pack Travel Weight. See Special Tools.
J 8001 Dial Indicator Set
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
1-2-3-4 AND 3-5 REVERSE CLUTCH OVERHAUL (6L50/6L80)
1-2-3-4 AND 3-5 REVERSE CLUTCH PLATES REMOVAL
Fig. 148: Removing 1-2-3-4 and 3-5 Reverse Clutch Plates
Courtesy of GENERAL MOTORS CORP.
1-2-3-4 and 3-5 Reverse Clutch Plates Removal
J 26900-13 Magnetic Base
1
4-5-6 Clutch Apply Passage
Tip: While using one finger to block the top
passage hole on the turbine shaft, apply
compressed air to the opposite top passage hole,
and observe the dial indicator measurement. Refer
to Clutch Backing Plate Retaining Ring
Specifications (6L80) or Clutch Backing Plate
Retaining Ring Specifications (6L90) to
determine the correct retainer.
Callout
Component Name
3-5 Reverse Clutch Backing Plate Retaining
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
1-2-3-4 CLUTCH PISTON REMOVAL
1
Ring
2
3-5 Reverse Clutch Backing Plate
3
3-5 Reverse Clutch Plate Assembly (Qty: 4)
4
3-5 Reverse Clutch Plate (Qty: 4)
5
3-5 Reverse Clutch (Waved) Plate
6
3-5 Reverse Clutch Apply Ring
7
1-2-3-4 Clutch Backing Plate Retaining Ring
8
1-2-3-4 Clutch Backing Plate
9
1-2-3-4 Clutch Plate Assembly (Qty: 5)
10
1-2-3-4 Clutch Plate (Qty: 5)
11
1-2-3-4 Clutch (Waved) Plate
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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