Hummer H3. Manual — part 14

REPAIR INSTRUCTIONS

BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE

Disconnecting Procedure

CAUTION: Batteries produce explosive gases. Batteries contain

corrosive acid. Batteries supply levels of electrical current
high enough to cause burns. Therefore, in order to reduce the
risk of personal injury while working near a battery, observe
the following guidelines:

Always shield your eyes.

Avoid leaning over the battery whenever possible.

Do not expose the battery to open flames or sparks.

Do not allow battery acid to contact the eyes or the skin.

Flush any contacted areas with water immediately
and thoroughly.

Get medical help.

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.

2006 Hummer H3

2006 ENGINE Engine Electrical - H3

Fig. 9: Battery Cables
Courtesy of GENERAL MOTORS CORP.

1. Record all preset and theft codes from the radio.

2. Turn off all lamps and accessories.

3. Turn the ignition switch to the LOCK position.

4. Open the negative battery cable cover.

5. Loosen the negative battery cable nut.

6. Remove the negative battery cable (1) from the battery.

Connecting Procedure

2006 Hummer H3

2006 ENGINE Engine Electrical - H3

Fig. 10: Battery Cables
Courtesy of GENERAL MOTORS CORP.

1. Clean any existing corrosion from the battery terminal and battery cable (1) using a wire

brush.

2. Install the negative battery cable (1) to the battery.

3. Tighten the negative battery cable nut.

Tighten: Tighten the nut to 9 N.m (80 lb in).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2006 Hummer H3

2006 ENGINE Engine Electrical - H3

4. Close the negative battery cable cover.

5. Reset all preset and theft codes previously recorded to the radio.

BATTERY POSITIVE AND NEGATIVE CABLE REPLACEMENT

Removal Procedure

IMPORTANT:

Always use replacement cables that are of the same type,
diameter and length of the cables that are being replaced.

Always route the replacement cable the same way as the
original cable.

2006 Hummer H3

2006 ENGINE Engine Electrical - H3