GMC 2011 Sierra - Manual (Page 525)

Black plate (101,1) GMC Sierra Owner Manual - 2011
Vehicle Care 10-101
5.3L engine (4.3L, 4.8L, 6.0L
and 6.2L 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. Now 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 to a heavy,
unpainted metal engine part
or to the remote negative (−)
terminal, on the vehicle with
the dead battery.
11. Start the vehicle with the good
battery and run the engine for a
while.
12. Try to start the vehicle that
had the dead battery. If it will
not start after a few tries, it
probably needs service.