Setting the 12/24 Hour Format
Buick LaCrosse / Buick LaCrosse Owners Manual / Instruments and Controls / Controls / Clock (Radio with CD and Touchscreen) / Setting the 12/24 Hour Format
1. Press the CONFIG button and
select Time Settings,
or press 
.
2. Highlight 12/24 Hour Format.
3. Press SELECT to select the 12 hour or 24 hour display format.
See also:
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When to Inspect the Engine Air
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Inspect the air cleaner/filter at the Maintenance II
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