Chevrolet S10 Pickup 2003 Owner's Manual page 316

A. Heavy, Unpainted Metal Engine Part
B. Good Battery
C. Dead Battery
5-50
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.