Hummer 2003 H2 Owner's Manual page 306

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2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren't touching
each other. If they are, it could cause a ground
connection you don't want. You wouldn't be able
to start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake firmly on both vehicles involved
in the jump start procedure. Put an automatic
transmission in PARK (P) or a manual transmission
in NEUTRAL before setting the parking brake.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or accessory power outlets. Turn off all lamps
that aren't needed as well as radios. This will avoid
sparks and help save both batteries. In addition,
it could save your radio!
NOTICE:
If you leave your radio on, it could be badly
damaged. The repairs wouldn't be covered by
your warranty.
5-4
4. Open the hoods and locate the positive (+) and
-
negative (
) terminal locations on the other vehicle.
Your vehicle has a remote positive (+) jump starting
terminal and a remote negative (
terminal. The remote positive (+) terminal is located
behind a red plastic cover near the engine accessory
drive bracket. See "Engine Compartment Overview"
in the Index for more information on location.
To uncover the remote positive (+) terminal,
open the red plastic cover.
-
The remote negative (
is located on the engine accessory drive bracket.
See "Engine Compartment Overview" in the Index
for more information on location.
You should always use the remote positive (+) and
-
the remote negative (
positive (+) and negative (
battery.
-
) jump starting
) terminal, marked "GND,"
) terminals instead of the
-
) terminals on your

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