Vehicle Storage - Pontiac 2005 Bonneville Owner's Manual

To be sure the vent hose (A) is properly attached, the
vent hose connectors (B) must be securely reattached to
the vent outlets (C) on each side of the battery, and
the vent assembly grommet (D) must be secured to the
floor pan (E).
5-58

Vehicle Storage

If you are not going to drive your vehicle for 25 days
or more, remove the black, negative ( ) cable from
the battery. This will help keep your battery from
running down.
CAUTION:
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Batteries have acid that can burn you and
gas that can explode. You can be badly hurt
if you are not careful. See Jump Starting
(3.8L V6 Engine) on page 5-59 or Jump Starting
(4.6L V8 Engine) on page 5-63 for tips on
working around a battery without getting hurt.
Also, for your audio system, see Theft-Deterrent
Feature on page 3-99.