Buick 2005 LaCrosse Owner's Manual page 143

To change the passenger compartment air filter, use the
following steps:
1. Turn the ignition to ACCESSORY and turn the
windshield wipers on.
2. Turn the ignition to OFF when the windshield
wipers are in the upright position.
3. Raise the hood.
4. Disconnect the windshield washer pump hose from
the fender rail and air inlet grille.
5. Peel back the hood weather-strip from the
passenger's side of the vehicle halfway to the center
of the hood.
6. Remove the three air inlet grille retainers.
7. Remove the air inlet grille.
9. Install a new passenger compartment air filter. See
Normal Maintenance Replacement Parts on
page 6-13 for the type of filter to use. Make sure it
slides under the compartment retainers.
10. Reverse Steps 1 through 7.
8. Remove the old air
filter by pulling up on
its tab.
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