Pontiac 2002 Grand Prix - Manual (Page 228)

5-4
NOTICE:
If the other system isn’t a 12 - volt system with a
negative ground, both vehicles can be damaged.
1. Check the other vehicle. It must have a 12 - volt
battery with a negative ground system.
2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren’t touching
each other. If they are, it could cause a ground
connection you don’t want. You wouldn’t be able to
start your vehicle, and the bad grounding could
damage the electrical systems.
To avoid the possibility of the vehicles rolling, set
the parking brake firmly on both vehicles involved in
the jump start procedure. Put an automatic transaxle
in PARK (P) or a manual transaxle in NEUTRAL
before setting the parking brake.
NOTICE:
If you leave your radio on, it could be badly
damaged. The repairs wouldn’t be covered by
your warranty.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter or in the accessary power outlets. Turn off the
radio and all lamps that aren’t needed. This will
avoid sparks and help save both batteries. And it
could save your radio!