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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 110 (Automatic Transmission - 6L90 (MYD) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> 1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Installation

1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Installation

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
GM1566330Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
1 2-6 and 3-5-Reverse Clutch Hub Thrust Bearing
2 2-6 and 3-5-Reverse Clutch Hub
3 1-2-3-4 Clutch Hub Thrust Bearing
4 1-2-3-4 Clutch Hub
5 4-5-6 Clutch Hub Thrust Bearing
6 4 - 5 - 6 Clutch (with Output Carrier Shaft and Dampener) Hub
NOTE:

Refer to 4-5-6 Clutch Dampener Overhaul  for complete inspection.

7 Turbine Shaft Thrust Bearing Assembly
8 4 - 5 - 6 (with Turbine Shaft) Clutch Assembly
9 Input Sun Gear Thrust Bearing
NOTE:

Thrust bearing snaps onto input carrier assembly.

10 Input Sun Gear Thrust Washer
11 Input Carrier
NOTE:

The spline on the input carrier installs up into the 1 - 2 - 3 - 4 and 3 - 5 reverse clutch housing.

12 Input Sun Gear
13 1-2-3-4 and 3-5-Reverse Clutch
NOTE:

Wiggle the DT 47781  clutch assembly installer in order to align the 1 - 2 - 3 - 4 and 3 - 5 reverse clutch plates with the external splines of the 4 - 5 - 6 clutch assembly. To verify that the 1 - 2 - 3 - 4 and 3 - 5 reverse clutch assembly is fully installed, lift up on the turbine shaft. There should not be any noticeable slack.


Special Tools 
DT-47781  C1234 35R Clutch Assembly Installer
Equivalent regional tools: Special Tools