Cadillac 2001 Catera Owner's Manual page 267

1. Unhook the five clips that attach the engine air
cleaner/filter lid to the housing. You may need to use
a screwdriver to help you unhook the clips.
2. With a screwdriver, loosen the retaining clamp on
the air intake tube and then disconnect the tube as
shown by the arrow above.
3. Move the hose going to the coolant surge tank
out of the way so the engine air cleaner/filter lid can
be lifted.
6-16
4. Lift the lid, take out the engine air cleaner/filter and
remove any loose debris that may be found lying in
the air cleaner base.
5. Install a new air filter element. See "Normal
Maintenance Replacement Parts" in the Index.
6. To reinstall the assembly, reverse Steps 1 through 3.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See "Scheduled Maintenance Services" in the
Maintenance Schedule booklet.