GMC 2003 Sierra - Manual (Page 426)

Д CAUTION;
Batteries have acid that can burn you and gas
that can explode. Vou can be badty hurt if you
aren't carefuL See ‘'Jump Starlfng" next for
lips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your
vahicie for longer alorage periods.
Also, for your audio system, see Theft-Deterrent
Feature an page 3-121,
Jump Starting
If your battery (or batt&riBs) has run down, you may
want 10 use another vehicle and some Jumper cables lo
start your vehicle. Be sure to follow the steps below
to do it safely.
Д CAUTION:
Batteries can hurt you. They tian be dangerous
because;
ъ They contain acid that can burn you.
% They contain gas that can explode or
ignite.
% They contain enough eleciricity to burn
you.
It you don4 fellow these steps exachy> some
or all of these things can hurl you.
f)iofice: Ignoring these steps could result In cosily
damage to your vehicle that wouldn't be covered
by your warranty.
Trying to start your vehicle by pushirtg or pulling tt
won't work, and It could damage your vehfcle.
1. Check the other vehicle. It rnust have a 12-vaft
baltery with a negative ground system.
Notice; If the other system isn't a 12-voJt systern
With a negative ground, both vehicles can be
darnaged.
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