Hummer H3. Manual — part 1117

Fig. 60: View Of Coolant Heater
Courtesy of GENERAL MOTORS CORP.

1. Install the coolant heater into the engine block.

Tighten: Tighten the coolant heater to 50 N.m (37 lb ft).

NOTE:

Refer to Component Fastener Tightening Notice .

2007 Hummer H3

2007 ENGINE Engine Cooling - H3

Fig. 61: Locating Coolant Heater & Cord
Courtesy of GENERAL MOTORS CORP.

2. Connect the coolant heater cord (4) to the coolant heater (6).

3. Install the left wheelhouse liner. Refer to Wheelhouse Panel Replacement (Front) or

Wheelhouse Panel Replacement (Rear) .

4. Lower the vehicle.

5. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or

Cooling System Draining and Filling (Vac-N-Fill).

COOLANT HEATER CORD REPLACEMENT

Removal Procedure

2007 Hummer H3

2007 ENGINE Engine Cooling - H3

1. Remove the battery box. Refer to Battery Box Replacement .

Fig. 62: Locating Coolant Heater & Cord
Courtesy of GENERAL MOTORS CORP.

2. Disconnect the coolant heater cord (4) from the coolant heater (6).

3. Cut the coolant heater cord ties (2, 5) from the following:

The battery cables conduit (3)

The engine wiring harness conduit (1)

4. Remove the coolant heater cord (4) from the vehicle.

Installation Procedure

2007 Hummer H3

2007 ENGINE Engine Cooling - H3

Fig. 63: Locating Coolant Heater & Cord
Courtesy of GENERAL MOTORS CORP.

1. Position the coolant heater cord (4) to the engine.

2. Route the coolant heater cord (4) along the engine wiring harness conduit (1) and battery

cables conduit (3).

3. Connect the coolant heater cord (4) to the coolant heater (6).

4. Secure the coolant heater cord ties (2, 5) to the following:

The battery cables conduit (3)

The engine wiring harness conduit (1)

5. Install the battery box. Refer to Battery Box Replacement .

6. Place the remaining coolant heater cord (4) between the following:

2007 Hummer H3

2007 ENGINE Engine Cooling - H3