Hummer H2. Manual - part 1154

Removal Procedure 

1. Remove the battery. Refer to BATTERY REPLACEMENT .  

2. Remove the bolts from the battery tray support.  

3. Remove the battery tray.  

Installation Procedure 

1. Install the battery tray. Install the bolts to the battery tray support until snug.  

2. Tighten the battery tray bolts. Tighten the bolts to 9 N.m (80 lb in).  

3. Install the battery. Refer to BATTERY REPLACEMENT .  

GROUND STRAP REPLACEMENT 

Removal Procedure 

1. Remove the left hand catalytic convert.  

2. Remove the engine wiring harness ground bolt. See Fig. 8 .  

3. Lower the vehicle.  

4. Remove the ground strap nut from the stud at the front of dash. See Fig. 9 .  

5. Remove the ground strap from the stud. 

 

2004 Hummer H2 

2004 STARTING & CHARGING SYSTEMS Starters - H2

  

Fig. 8: Locating Engine Wiring Harness Ground Bolt 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2004 STARTING & CHARGING SYSTEMS Starters - H2

  

Fig. 9: Locating Ground Strap At Front Of Dash 
Courtesy of GENERAL MOTORS CORP. 

Installation Procedure 

 

2004 Hummer H2 

2004 STARTING & CHARGING SYSTEMS Starters - H2

  

1. Install the ground strap to the stud.  

2. Install the ground strap nut to the stud at the front of dash. Tighten the nut to 9 N.m (80 lb in).  

3. Raise the vehicle.  

4. Position the ground strap and engine wiring harness ground.  

5. Install the engine wiring harness ground bolt. Tighten the bolt to 16 N.m (12 lb ft).  

6. Install the left hand catalytic convert.  

7. Lower the vehicle.  

STARTER MOTOR RELAY REPLACEMENT 

Removal Procedure 

1. Remove the underhood bussed electrical center (UBEC) cover.  

2. Remove the starter motor relay.  

Installation Procedure 

1. Install the starter motor relay.  

2. Install the underhood bussed electrical center (UBEC) cover.  

STARTER MOTOR REPLACEMENT 

Removal Procedure 

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

2. Raise and suitably support the vehicle.  

3. Remove the engine protective shield.  

4. Remove the transmission cover bolt.  

5. Remove the starter bolts. See Fig. 10 .  

6. Disconnect the oil level sensor electrical connector.  

7. Slide the starter forward until the starter clears the transmission.  

8. Remove the starter lead nut.  

9. Remove the starter lead from the starter.  

10. Remove the positive cable nut.  

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