Hummer H3. Manual — part 1659

Transfer Case Shift Control Module Replacement

TRANSFER CASE SHIELD REPLACEMENT

Fig. 13: Transfer Case Shield Replacement
Courtesy of GENERAL MOTORS CORP.

Transfer Case Shield Replacement

Callout

Component Name

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications.
Preliminary Procedure:
Remove the instrument panel (I/P) closeout panel. Refer to Instrument Panel Outer Trim
Cover Replacement - Right Side (Left Hand Drive) or Instrument Panel Outer Trim
Cover Replacement - Right Side (Right Hand Drive) .

1

Transfer Case Control Module
Tip: Remove the control module from the mounting bracket before
disconnecting the electrical connectors.

2

Transfer Case Control Module Electrical Connector

Callout

Component Name

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

TRANSFER CASE FLUID REPLACEMENT

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Determine the VIN of the vehicle:

If the VIN is 56TDN13E778100102 or prior, proceed to step 3.

If the VIN is after 56TDN13E778100102, perform steps 3-9 and 14 only.

Fastener Tightening Specifications: Refer to Fastener Tightening
Specifications.Preliminary Procedure: Raise the vehicle. Refer to Lifting and Jacking
the Vehicle .

NOTE:

Refer to Fastener Notice .

1

Bolt, Transfer Case Shield (Qty: 2)

Tighten: 30 N.m (23 lb ft)

2

Shield, Transfer Case

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

Fig. 14: Identifying Transfer Case Drain Plug
Courtesy of GENERAL MOTORS CORP.

3. Remove the transfer case drain plug (1) and drain the fluid.

4. Apply pipe sealant GM P/N 12346004 (Canadian P/N 10953480) to the threads of the

transfer case drain plug.

5. Install the transfer case drain plug (1).

Tighten: Tighten the transfer case drain plug to 25 N.m (18 lb ft).

6. Remove the transfer case fill plug (2).

7. Fill the transfer case to the bottom of the fill hole with manual transmission and transfer case

NOTE:

Refer to Fastener Notice .

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

fluid, G/M P/N 88861800 (Canadian P/N 88861801).

8. Apply pipe sealant G/M P/N 12346004 (Canadian P/N 10953480) to the threads of the

transfer case plug.

9. Install the transfer case fill plug.

Tighten: Tighten the transfer case fill plug to 25 N.m (18 lb ft).

10. If the VIN is 56TDN13E778100102 or prior proceed to the next step, if not proceed to step

14.

11. Remove the speed sensor from the transfer case. Refer to Transfer Case Speed Sensor

Replacement.

Fig. 15: Identifying Proper Hand Pump Position
Courtesy of GENERAL MOTORS CORP.

12. Add 250 ml (8.45 oz.) of manual transmission and transfer case fluid, GM P/N 88861800

IMPORTANT: A hand pump or equivalent, will be required to perform step

12.

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3