Hummer H2. Manual - part 1153

Fig. 6: Locating Negative Battery Cable-To-Engine Connection 
Courtesy of GENERAL MOTORS CORP. 

Installation Procedure 

1. Install the negative battery cable.  

2. Position the negative cable and forward lamp wiring harness ring terminals to the frame. Insert the anti-

rotation tab on the forward lamp wiring harness into the hole in the frame.  

3. Install the forward lamp wiring harness ground/negative cable bolt. Tighten the forward lamp wiring 

harness ground/negative cable bolt to 9 N.m (80 lb in).  

4. Position the negative cable and engine wiring harness ring terminals to the engine block. Position the 

anti-rotation tab on the negative cable in the correct location. 

 

2004 Hummer H2 

2004 STARTING & CHARGING SYSTEMS Starters - H2

  

5. Install the engine wiring harness ground/negative cable bolt. Tighten the engine wiring harness 

ground/negative cable bolt to 25 N.m (18 lb ft).  

6. Install the engine protection shield.  

7. Lower the vehicle.  

8. Install the negative cable clip to the positive cable clip.  

9. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE 

DISCONNECT/CONNECT PROCEDURE (SINGLE BATTERY) .  

BATTERY POSITIVE CABLE REPLACEMENT 

Removal Procedure 

1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE 

DISCONNECT/CONNECT PROCEDURE (SINGLE BATTERY) .  

2. Unsnap the positive battery cable cap.  

3. Disconnect the positive battery cable.  

4. Remove the underhood bussed electrical center (UBEC) cover. Position the lower cover to the side.  

5.  

Remove the positive battery cable bolt at the UBEC.  

6. Unsnap the junction block cover.  

7. Remove the positive battery cable (1) from the junction block. See Fig. 1 .  

8. Raise and suitably support the vehicle with safety stands.  

9. Remove the engine protection shield.  

10. Remove the positive battery cable channel bolt.  

11. Slide the channel pin out of the oil pan tab.  

12. Remove the positive battery cable from the channel.  

13. Remove the positive cable nut  

14. Remove the positive cable from the starter.  

15. Remove the positive cable clip from the clip on the oil pan.  

16. Remove the positive cable from the clip on the oil pan.  

17. Remove the positive battery cable. 

CAUTION: Before servicing any electrical component, the ignition key must be in the 

OFF or LOCK position and all electrical loads must be OFF, unless 
instructed otherwise in these procedures. If a tool or equipment could 
easily come in contact with a live exposed electrical terminal, also 
disconnect the negative battery cable. Failure to follow these precautions 
may cause personal injury and/or damage to the vehicle or its 
components. 

NOTE:

The bolt is integral to the battery cable and is not removable. 

 

2004 Hummer H2 

2004 STARTING & CHARGING SYSTEMS Starters - H2

  

Fig. 7: Identifying Positive Battery Cable-To-Starter Connection 
Courtesy of GENERAL MOTORS CORP. 

Installation Procedure 

1. Install the positive battery cable.  

2. Install the positive cable to the clip on the oil pan.  

3. Install the positive cable to the starter.  

4. Install the positive cable nut. Tighten the nut to 9 N.m (80 lb in).  

5. Install the positive battery cable to the channel.  

6. Slide the channel pin into the oil pan tab.  

7. Install the positive battery cable channel bolt. Tighten the bolt to 12 N.m (106 lb in).  

8. Install the engine protection shield.  

 

2004 Hummer H2 

2004 STARTING & CHARGING SYSTEMS Starters - H2

  

9. Lower the vehicle.  

10. Install the positive battery cable (1) into the junction block. Tighten the nut to 9 N.m (80 lb in).  

11. Snap the junction block cover closed.  

12. Tighten the positive cable bolt at the UBEC. Tighten the bolt to 9 N.m (80 lb in).  

13. Position the UBEC lower cover.  

14. Install the UBEC cover.  

15. Connect the positive battery cable. Tighten the bolt to 17 N.m (13 lb ft).  

16. Snap the positive battery cable cap closed.  

17. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE 

DISCONNECT/CONNECT PROCEDURE (SINGLE BATTERY) .  

BATTERY REPLACEMENT 

Removal Procedure 

1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE 

DISCONNECT/CONNECT PROCEDURE (SINGLE BATTERY) .  

2. Disconnect the positive battery cable.  

3. Remove the battery hold down retainer bolt and retainer.  

4. Remove the battery.  

5. Remove the battery insulator.  

Installation Procedure 

1. Install the battery insulator, if necessary.  

2. Install the battery.  

3. Install the battery hold down retainer and bolt. Tighten the battery hold down retainer bolt to 25 N.m (18 

lb ft).  

4. Connect the positive battery cable. Tighten the positive battery cable bolt to 17 N.m (13 lb ft).  

5. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE 

DISCONNECT/CONNECT PROCEDURE (SINGLE BATTERY) .  

BATTERY TRAY REPLACEMENT 

CAUTION: Before servicing any electrical component, the ignition key must be in the 

OFF or LOCK position and all electrical loads must be OFF, unless 
instructed otherwise in these procedures. If a tool or equipment could 
easily come in contact with a live exposed electrical terminal, also 
disconnect the negative battery cable. Failure to follow these precautions 
may cause personal injury and/or damage to the vehicle or its 
components. 

 

2004 Hummer H2 

2004 STARTING & CHARGING SYSTEMS Starters - H2