GMC 2003 Savana Van Owner's Manual page 291

Jumper Cable Removal
A. Heavy, Unpainted Metal Engine Part or Remote
B. Good Battery or Remote Positive (+) and Remote
C. Dead Battery or Remote Positive (+) Terminal
Negative (-) Terminal
Negative (-) Terminals
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 positve (+) remote terminal to its original
position.
5-48