Hummer H2. Manual — part 2647

position. The system consists of the following components:

z

The automatic transmission shift lock control solenoid.

z

The automatic transmission shift lock control switch.

z

The park/neutral position switch.

With the ignition in the ON position, battery positive voltage is supplied to the park/neutral position switch.
When the transmission is in the PARK position the contacts in the park/neutral position switch are closed. This
allows current to flow through the switch to the automatic transmission shift lock control switch. The circuit
continues through the normally-closed switch to the automatic transmission shift lock control solenoid. The
automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic
transmission shift lock control solenoid, locking the shift linkage in the PARK position. When the driver
presses the brake pedal the contacts in the automatic transmission shift lock control switch open, causing the
automatic transmission shift lock control solenoid to release. This allows the shift lever to move from the
PARK position.

Park Lock Solenoid

The park lock solenoid is a safety device that prevents an inadvertent shift out of PARK when the key is in the
OFF position. The key must be in the RUN position to release the park lock solenoid. The system consists of
the park lock solenoid. With the ignition in the ON position, voltage is supplied to the park lock solenoid. The
park lock solenoid energizes through a permanent ground unlocking the shift lever. With the ignition in the OFF
or ACCY position the park lock solenoid de-energizes and locks the shift lever in the park position.

2004 Hummer H2

2004 TRANSMISSION Shift Lock Control - Hummer H2

2004 DRIVELINE/AXLE

Transfer Case - BW 4484 - Hummer H2

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Fastener Tightening Specifications

CAPACITIES - APPROXIMATE FLUID

Capacities - Approximate Fluid

SEALERS, ADHESIVES, AND LUBRICANTS

Sealers, Adhesives, and Lubricants

Application

Specification

Metric

English

Adapter Bolts to Transmission

50 N.m

37 lb ft

Adapter Studs

31 N.m

23 lb ft

Case Bolts

21 N.m

15 lb ft

Crossmember Bolts

95 N.m

70 lb ft

Drain Plug

25 N.m

18 lb ft

Encoder Motor Bolts

10 N.m

89 lb in

Encoder Motor Bracket Bolt

10 N.m

89 lb in

Fill Plug

25 N.m

18 lb ft

Transfer Case Mounting Nuts

50 N.m

37 lb ft

Transfer Case Shield Bolts

20 N.m

15 lb ft

Vehicle Speed Sensors

17 N.m

13 lb ft

Vent

6 N.m

53 lb in

Application

Specification

Metric

English

DEXRON(R) lll Fluid GM P/N 12346143 (Canadian P/N 10952622)

1.4 liters

1.5 quarts

Application

Type of Material

GM Part Number

United States

Canada

Drain Plug

Pipe Sealant

12346004

10953480

Fill Plug

Pipe Sealant

12346004

10953480

Front Output Shaft Cup Plug

Threadlocker

12345382

10953489

Rear Case Half to Front Case Half

RTV Sealant

12345739

10953541

Transfer Case Fluid

DEXRON(R)III

12346143

10952622

Vehicle Speed Sensor O-Ring

Transfer Case Fluid

12346143

10952622

2004 Hummer H2

2004 DRIVELINE/AXLE Transfer Case - BW 4484 - Hummer H2

2004 Hummer H2

2004 DRIVELINE/AXLE Transfer Case - BW 4484 - Hummer H2

COMPONENT LOCATOR

TRANSFER CASE DISASSEMBLED VIEW

Fig. 1: Transfer Case Component Views
Courtesy of GENERAL MOTORS CORP.

Callouts For Fig. 1

Vent

Pipe Sealant

12346004

10953480

Callout

Component Name

1

Adapter Stud

2

Front Case Half

3

Location Pin

3

Location Pin

4

Fuel Line Bracket

5

Vehicle Speed Sensor O-Ring Seal

6

Vehicle Speed Sensor

7

Rear Output Shaft Seal

8

Fill Plug

2004 Hummer H2

2004 DRIVELINE/AXLE Transfer Case - BW 4484 - Hummer H2

Fig. 2: Internal Component Views
Courtesy of GENERAL MOTORS CORP.

9

Shift Detent Lever Seal

10

Encoder Motor

11

Encoder Motor Bolt

12

Encoder Motor Bracket Bolt

13

Case Half Bolt

14

Wiring Harness Bracket

15

Drain Plug

16

Rear Case Half

17

Magnet

18

Front Output Shaft Seal

19

Vent

20

Input Shaft Seal

2004 Hummer H2

2004 DRIVELINE/AXLE Transfer Case - BW 4484 - Hummer H2