Chevrolet Silverado / GMC Sierra. Service manual — part 805

CENTER SUPPORT, OUTPUT CARRIER AND OUTPUT SHAFT
INSTALLATION (6L80/6L90)

Fig. 189: Center Support, Output Carrier and Output Shaft Installation (6L80/6L90)
Courtesy of GENERAL MOTORS CORP.

damage. Replace if damaged.

2

A/Trans Input and Output Speed Sensor
Assembly

3

Bolt M6 x 20 (Qty: 2)

Tighten: 12 N.m (106 lb in)

NOTE:

Refer to Fastener Notice .

Callout

Component Name

1

Output Shaft Thrust Bearing Assembly

Output Carrier Assembly and Output Shaft

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

2

Assembly

Special Tool:
DT 47786 Output Carrier/Shaft Lifting Tool. See
Special Tools.

NOTE:

Apply automatic transmission fluid (ATF) to the inside
diameter of the output shaft seal before installing the
output shaft assembly into the case. Failure to lube the
seal may cause the seal to roll during output shaft
installation, which will result in transmission damage.

NOTE:

Ensure the DT 47786 is completely threaded into the
output shaft assembly. Due to the weight of the
assembly, incomplete threading may cause the
assembly to break free from the DT 47786, causing
component damage.

3

Center Support Assembly
Tip:

When the center support assembly is properly
installed, the fluid passages should align with
the fluid passage seal bores in the case
assembly.

It may be necessary to rotate the output shaft
by hand in order to fully install the center
support assembly.

4

Center Support Retaining Ring

CAUTION:

Use care when removing or installing the retaining
ring. Ensure the J 45126 and DT 47773 are installed
properly onto the retaining ring or bodily injury may
occur.

NOTE:

Ensure the retaining ring is installed with the tapered
side up, and in the 9 o'clock position from the pan side
of the case. Failure to properly install the retaining ring

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 ASSEMBLY AND 4-5-6 CLUTCH
ASSEMBLY INSTALLATION

Fig. 190: 1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly
Installation
Courtesy of GENERAL MOTORS CORP.

Special Tools

DT 47773 Snap Ring Pliers Adapter Set. See
Special Tools.

J 45126 Snap Ring Pliers. See Special
Tools.

will cause transmission damage.

Callout

Component Name

1

2-6 and 3-5 Reverse Clutch Hub Thrust
Bearing Assembly

2

2-6 and 3-5 Reverse Clutch (with Output

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

TORQUE CONVERTER HOUSING WITH FLUID PUMP INSTALLATION

Carrier Outer Sun Gear Shaft) Hub Assembly

3

1-2-3-4 Clutch Hub Thrust Bearing Assembly

4

1-2-3-4 Clutch (with Output Carrier Inner Sun
Gear Shaft) Hub Assembly

5

4-5-6 Clutch Hub Thrust Bearing Assembly

6

4-5-6 Clutch (with Output Carrier Shaft and
Dampener) Hub Assembly
Tip: 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
Tip: Thrust bearing snaps onto input carrier
assembly.

10

Input Sun Gear Thrust Washer

11

Input Carrier Assembly

12

Input Sun Gear

13

1-2-3-4 and 3-5 Reverse Clutch Assembly
Tip: Wiggle the DT 47781 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. See Special Tools. 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 Tool:
DT 47781 C1234 35R Clutch Assembly
Installer. See Special Tools.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado