GMC 2003 Sonoma Owner's Manual page 313

8. Now connect the black
negative (-) cable to
the negative (-)
terminal of the good
battery. Use a remote
negative (-) terminal
if the vehicle has one.
10.
11.
9. Don't let the other end touch anything until the next
step. The other end of the negative (-) cable
doesn't go to the dead battery. It goes to a heavy,
unpainted metal engine part, or to a remote
negative (-) terminal on the vehicle with the dead
battery.
12.
Connect the other end of the negative (-) cable at
least 18 inches (45 cm) away from the dead
battery, but not near engine parts that move. The
electrical connection
is
just as good there, and
the chance of sparks getting back to the battery is
much less.
Now start the vehicle with the good battery and run
the engine for awhile.
Try to start the vehicle that had the dead battery. If
it won't start after a few tries, it probably needs
service.
Notice: Damage to your vehicle may result from
electrical shorting if jumper cables are removed
incorrectly. To prevent electrical shorting, take care
that the cables don't touch each other or any
other metal. The repairs wouldn't be covered by
your warranty.
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