Chevrolet 2007 Equinox Owner's Manual page 170

To change the passenger compartment air filter,
use the following steps:
1. Remove the push pins from the rear of the
passenger's side air inlet panel. It is located
in the rear of the engine compartment on
the passenger side of the vehicle.
2. Open the hood.
3. Remove the push pins from the top and
forward edge of the passenger's side air
inlet panel.
4. Remove the air inlet panel.
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5. Remove the filter from the filter housing by
pressing the release tab at the inboard edge
of the filter housing.
6. Remove the filter from the vehicle.
7. Install a new passenger compartment air filter.
For the type of filter to use see Normal
Maintenance Replacement Parts on page 449.
8. Reverse Steps 1 through 5.