GMC 1996 Suburban Owner's Manual page 221

6. Don't let the other end
touch metal. Connect it
to the positive
(+>
terminal of the good
battery. Use a remote
positive
(+)
terminal if
the vehicle has one.
7. Now connect the
black negative
(-)
cable
to the good battery's
negative
(-)
cable.
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.
I t
goes to a heavy unpainted metal part of the vehicle
with the dead battery.
8. Attach the cable at least 18 inches (45 cmj away
from the dead battery, but not near engine parts that
move. The electrical connection is just as good
there, but the chance of sparks getting back to the
battery is much less.
9. Now start the vehicle
with
the good battery and run
the engine for a while.
IO. Try to start the vehicle with the dead battery.
If
it
won't start after a few tries,
it
probably
needs service.
5-5