GMC Hybrid 2007 Owner's Manual page 52

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 other 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.
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Do not 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 your vehicle's remote negative (−) terminal,
marked GND. The electrical connection is
just as good there, and the chance of sparks
getting back to the battery is much less.
10. Now start the vehicle with the good battery.
11. Try to start the hybrid vehicle. Hold the key in
the start position for at least three seconds.
If the hybrid vehicle still does not start, turn the
key to LOCK and wait 5 minutes.
12. After 5 minutes try to start the hybrid vehicle
again.
13. Repeat steps 11 and 12 several more times
as necessary. If the hybrid vehicle still will not
start, your vehicle needs service.
Notice: If the jumper cables are connected or
removed in the wrong order, electrical
shorting may occur and damage the vehicle.
The repairs would not be covered by your
warranty. Always connect and remove
the jumper cables in the correct order, making
sure that the cables do not touch each other
or other metal.