GMC Sierra 2018 Owner's Manual page 415

414 Vehicle Care
Before you connect the cables,
here are some basic things you
should know. Positive (+) will
go to positive (+) or to a remote
positive (+) terminal if the
vehicle has one. Negative ( )
will go to a heavy, unpainted
metal engine part or to a
remote negative ( ) terminal if
the vehicle has one.
Do not connect positive (+) to
negative ( ) or you will get a
short that would damage the
battery and maybe other parts
too. And do not connect the
negative ( ) cable to the
negative ( ) terminal on the
dead battery because this can
cause sparks.
5.3L Shown, 4.3L, 6.0L, 6.2L, and
6.6L Similar
7. Connect the red positive (+)
cable to the positive (+)
terminal of the vehicle with the
dead battery.
8. Do not 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.
9. Connect the black negative ( )
cable to the negative ( )
terminal of the good battery.
Use a remote negative ( )
terminal if the vehicle has one.
Do not let the other end touch
anything until the next step.
10. Connect the other end of the
negative ( ) cable.
4.3L Shown, 5.3L and 6.2L Similar
To the metal bracket that is
bolted to the engine and
supports the resonator, on
the vehicle with the dead
battery.