GMC 2010 T-Series, Owner'S Manual

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9. Connect the other end
of the negative ( − )
cable at least 18 inches
(45 cm) away from the
dead battery, but not
near engine parts
that move.
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 batteries and
run the engine for a while. If your vehicle has the
high idle option, use it.
11. Try to start the vehicle that had the dead batteries.
If it will not start after a few tries, it probably 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 the vehicle 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.
Jumper Cable Removal
A. Heavy, Unpainted Metal Engine Part or Remote
Negative ( − ) Terminal
B. Good Battery or Remote Positive (+) and Remote
Negative ( − ) Terminals
C. Dead Battery or Remote Positive (+) Terminal
To disconnect the jumper cables from both vehicles, do
the following:
1. Disconnect the black negative ( − ) cable from the
vehicle that had the dead batteries.
2. Disconnect the black negative ( − ) cable from the
vehicle with the good batteries.
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