Oldsmobile 2004 Alero Owner's Manual page 267

Notice: If the jumper cables are removed in the
wrong order, electrical shorting may occur and
damage the vehicle. The repairs would not be
covered by your warranty. Remove the jumper
cables in the correct order, making sure that the
cables do not touch each other or other metal.
Jumper Cable Removal
A. Heavy, Unpainted Metal Engine Part
B. Good Battery
C. Dead Battery
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.
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