Chevrolet 2001 Impala Owner's Manual page 262

Jumper Cable Removal Procedure
A. Heavy, Unpainted Metal Engine Part
B. Good Battery
C. Dead Battery
5-8
To disconnect the jumper cables from both vehicles,
do the following:
1. Disconnect the black negative (
heavy, unpainted metal engine part on the vehicle
that had the dead battery.
2. Disconnect the black negative (
-
the negative ( ) terminal on 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.
-
) cable from the
-
) cable from