Chevrolet Silverado / GMC Sierra. Service manual — part 2947

Fig. 45: High/Low Shift Fork Replacement
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

1

Transfer Case High/Low Shift Fork Pin
Tip: Drive the pin out using a drift punch and
hammer.

2

Transfer Case High/Low Shift Fork
Tip: Inspect for wear or damage in the spring seat
locations. The component must be replaced if damage
is found.

3

Transfer Case High/Low Shift Fork Spring Assembly
Tip: The component must be replaced if the
following conditions exist:

The cam lobes are worn or rough

The spring is broken

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

TRANSFER CASE ASSEMBLE

Input Shaft and Planetary Assembly Installation

4

Transfer Case Two/Four Wheel Drive Actuator Cam
Retaining Ring

5

Transfer Case Two/Four Wheel Drive Actuator Cam
Spacer

6

Transfer Case Two/Four Wheel Drive Actuator Cam

7

Transfer Case High/Low Shift Fork - Service - Pin
Tip:

Apply a small amount of threadlock GM P/N
12345493 (Canadian P/N 10953488), or
equivalent, to the shaft of the pin before
installation.

Press the pin into the control actuator shaft using
a brass drift until bottom.

8

Transfer Case Shift Fork Shaft Guide Screw

Tip: Apply threadlock GM P/N 12345493 (Canadian
P/N 10953488), or equivalent, to the screw threads.

Tighten: 5 N.m (44 lb in).

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 46: Input Shaft and Planetary Assembly Installation
Courtesy of GENERAL MOTORS CORP.

Input Shaft and Planetary Assembly Installation

Callout

Component Name

1

Transfer Case Input Shaft Bearing Assembly

2

Transfer Case Input Shaft Inner Retaining Ring

3

Transfer Case High/Low Planetary Carrier
Assembly

4

Transfer Case Planetary Carrier Sun Gear Thrust
Washer

5

Transfer Case Input Shaft

6

Transfer Case Planetary Carrier Sun Gear Thrust
Washer

7

Transfer Case High/Low Locking Plate

8

Transfer Case High/Low Planetary Carrier
Retaining Ring

9

Transfer Case Input Shaft/Planetary Assembly

10

Transfer Case Input Shaft Bearing Outer Retaining

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Measuring Clutch Pack Height

Fig. 47: Measuring Clutch Pack Height
Courtesy of GENERAL MOTORS CORP.

Measuring Clutch Pack Height

Ring

Callout

Component Name

Tip:

The DT-48213 applies a predetermined amount of pressure to the clutch pack in order
to properly measure the clutch pack height. See Special Tools. Do not use any other
method than what is outlined below.

Micrometers or depth gages may also be used in conjunction with the DT-48213 to
measure the clutch pack height. See Special Tools.

2 variations are available to measure clutch pack height, outside measurement or

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado