Hummer 2006 H3 Owner's Manual page 315

Jumper Cable Removal
A. Heavy, Unpainted Metal Engine Part or Remote
Negative ( ) Terminal
B. Good Battery or Remote Positive (+) and Remote
Negative ( ) Terminals
C. Dead Battery or Remote Positive (+) Terminal
To disconnect the jumper cables from both vehicles,
do the following:
1. Disconnect the black negative ( ) cable from the
vehicle that had the dead battery.
2. Disconnect the black negative ( ) cable from the
vehicle with the good battery.
3. Disconnect the red positive (+) cable from the
vehicle with the good battery.
4. Disconnect the red positive (+) cable from the other
vehicle.
5. Return the positive (+) battery terminal cover to its
original position.
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