GMC 2012 Sierra - Manual (Page 478)

Black plate (92,1) GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
10-92 Vehicle Care
12. Try to start the vehicle that
had the dead battery. 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 bad battery.
2. Disconnect the black
negative (−) cable from the
vehicle with the good battery.
3. Disconnect the red positive (+)
cable from the vehicle with the
good battery.
4. Disconnect the red positive (+)
cable from the other vehicle.
5. Return the positive (+) terminal
cover, to its original position.