Hummer H2. Manual - part 1413

15. Lower the vehicle.  

16. Fill the cooling system/engine block. Refer to Draining and Filling Cooling System .  

COOLANT HEATER CORD REPLACEMENT 

Removal Procedure 

Fig. 109: Engine Coolant Heater Cord Electrical Connector & Coolant Heater 
Courtesy of GENERAL MOTORS CORP. 

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 

2. Disconnect the coolant heater electrical connector (2). 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

Fig. 110: Engine Coolant Heater Cord 
Courtesy of GENERAL MOTORS CORP. 

3. Remove the coolant heater cord retainer and bolts.  

4. Remove the coolant heater cord.  

Installation Procedure 

NOTE:

The heater cord must not touch the engine, hot pipes, manifold, or any moving 
parts. Route the cord to the left front of the engine compartment securing with 
tie straps as necessary to prevent damage.

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

Fig. 111: Engine Coolant Heater Cord 
Courtesy of GENERAL MOTORS CORP. 

1. Install the coolant heater cord.  

2. Install the coolant heater cord bolts and retainer. 

Tighten: Tighten the coolant heater cord bolts to 8 N.m (71 lb in).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

Fig. 112: Engine Coolant Heater Cord Electrical Connector & Coolant Heater 
Courtesy of GENERAL MOTORS CORP. 

3. Connect the coolant heater electrical connector (2).  

4. Lower the vehicle.  

DESCRIPTION AND OPERATION 

COOLING SYSTEM DESCRIPTION AND OPERATION 

Engine Coolant Indicators 

ENGINE COOLANT HOT 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2