GMC 1994 Yukon Owner's Manual page 210

6. Connect the red positive
(+) cable
to
the positive (+) terminal of the
vehicle with the dead battery. Use a remote positive (+) terminal if the
vehicle has one.
Dead Battery (+) Good Battery (+)
7. 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.
8. 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. It goes to a heavy
unpainted metal part of the vehicle with the dead battery.
Good Battery (-) Heavy Metal Engine Part
i
5-6