Hummer H3. Manual — part 1131

Use the test adapters that are provided with the J 42000 or GM P/N 12303040 terminal
adapters. See Special Tools. If the adapters that are provided with the J 42000 require
replacement, use GM P/N 12303040. See Special Tools. Any other adapter may not
contact the correct areas of the battery terminal, causing a resistance that may result in an
invalid battery test result.

Battery Inspection/Test (Non-HP2)

Step

Action

Value(s)

Yes

No

CAUTION:

Refer to Battery Disconnect Caution .

1

Inspect the battery for a cracked,
broken or damaged case, which may
be indicated by battery acid leakage.
Is the battery OK?

-

Go to Step 2

Go to Step

19

2

Compare the cold cranking amperage
(CCA) and reserve capacity (RC) of
the battery to the original battery or
original equipment (OE)
specification. Refer to Battery
Usage.
Does the battery meet or exceed the
specifications?

-

Go to Step 3

Go to Step

19

3

Does the hydrometer display a
yellow dot?

-

Go to Step 4 Go to Step 5

4

Tap the hydrometer lightly on top
with the handle of a small
screwdriver in order to dislodge any
air bubbles inside the battery.
Does the hydrometer still display a
yellow dot?

-

Go to Step

19

Go to Step 5

5

1. Turn OFF the ignition.

2. Attempt to rotate the negative

battery cable connector
clockwise with light finger
pressure.

Does the negative connector rotate?

-

Go to Step 6 Go to Step 7

Use a torque wrench in order to

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2007 ENGINE Engine Electrical - H3

6

verify the torque to loosen the
negative battery terminal bolt.
Is the torque above the specified
value?

10 N.m (88

lb in)

Go to Step 8 Go to Step 7

7

Disconnect the negative battery
cable.
Is the cable disconnected?

-

Go to Step 9

-

8

1. Disconnect the negative battery

cable.

2. Inspect for the following

conditions and repair as
needed:

The cable bolt is too long
or deformed at the end.

There is foreign material
present inside the nut in
the battery terminal.

Damage to the battery
terminal face or cable
connector ring.

Is the repair complete?

-

Go to Step 9

-

9

Rotate the positive battery cable
connector clockwise with light finger
pressure.
Does the positive connector rotate?

-

Go to Step

10

Go to Step

11

10

Use a torque wrench in order to
verify the torque to loosen the
positive battery terminal bolt.
Is the torque above the specified
value?

10 N.m (88

lb in)

Go to Step

12

Go to Step

11

11

Disconnect the positive battery cable.
Is the cable disconnected?

-

Go to Step

13

-

1. Disconnect the positive battery

cable.

2. Inspect for the following

conditions and repair as

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2007 ENGINE Engine Electrical - H3

12

needed:

The cable bolt is too long
or deformed at the end.

There is foreign material
present inside the nut in
the battery terminal.

Damage to the battery
terminal face or cable
connector ring.

Is the repair complete?

-

Go to Step

13

-

13

1. Clean and wire brush the lead

face of both battery terminals
and the metal contact rings in
both cable connectors.

2. Remove the bolts from the

cable connectors in order to
provide access to the connector
rings as needed.

3. If either of the battery terminals

or the cable rings are
excessively damaged or
corroded, replace as needed.

Are the metal connecting parts clean
and in good condition?

-

Go to Step

14

-

14

1. Connect the positive battery

cable to the battery positive
terminal.

2. Tighten the cable bolt to the

specified value.

Is the cable bolt properly tightened?

15 N.m (11

lb ft)

Go to Step

15

-

15

1. Connect the negative battery

cable to the battery negative
terminal.

2. Tighten the cable bolt to the

15 N.m (11

lb ft)

2007 Hummer H3

2007 ENGINE Engine Electrical - H3

BATTERY CHARGING

Tools Required

specified value.

Is the cable bolt properly tightened?

Go to Step

16

-

16

1. Install the J 42000 Battery

Tester. See Special Tools.

2. Follow the directions supplied

with the tester.

3. Follow any direction displayed

on the tester.

Did the tester pass the battery?

IMPORTANT:

Ensure that all of the electrical loads are
turned OFF.

-

Go to Step

17

Go to Step

18

17

1. Press the CODE button on the J

42000 . See Special Tools.

2. For warranty purposes, write

the displayed code on the repair
order.

Did you complete this action?

-

Battery OK

-

18

1. Press the CODE button on the J

42000 . See Special Tools.

2. For warranty purposes, write

the displayed code on the repair
order.

3. Replace the battery. Refer to

Battery Replacement.

Did you complete the replacement?

-

Battery OK

-

19

Replace the battery. Refer to
Battery Replacement.
Did you complete the replacement?

-

Battery OK

-

2007 Hummer H3

2007 ENGINE Engine Electrical - H3