GMC 2003 Envoy - Manual (Page 337)

Vetiicle Storage
It you’iB nol going [0 drive your vehicle (or 25 days or
more, remove blackn negalivs (-) cable from
fine battery This lA/lfl help keop ygur bartery from
funnirvg down.
A CAUTION:
Batteries have acid that can bum you and gas
lhat can explode- You can be badly hurt if you
aren't caretut. See “Jump Starting" next fer
tips on working around a battery without
getting hurt.
Contact yoLir dealer to learn how to prepare your
vehicle for longer storage periods.
Also, for your audio system^ see
FeatLic& (RDS R&ciias) on page 3-i05,
Jump Starting
ir your batlery has run down, you may want to use
another vehicle and some jumper cables to slan your
vehicle. But please uso the folEowing steps lo do It
safety.
Baltedes carr hurt you. They can be dangerous
because:
% They contain acid that can burn you,
* they contain gas lhat can explode or
ignite.
% They contain enough electricity to
bum yoUr
If you don't follow these steps exactly, some
or all of these things can hurt you.
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