Cadillac ESCALADE EXT 2002 Manual page 329

Engine Air Cleaner/Filter
The engine air cleaner/filter assembly has an air filter
restriction indicator that lets you know when the engine
air cleaner/filter is dirty and needs to be serviced. The
air filter restriction indicator is located on the air filter
assembly cover. See "Engine Compartment Overview"
in the Index for more information on location.
See "Owner Checks and Services" in the Index to
determine when to check the air filter restriction
indicator.
When both service window (A) and service window (B)
turn orange, replace the engine air cleaner/filter.
The service window (A)
with the percentage scale
shows the amount of engine
air cleaner/filter life used.
After changing the engine air cleaner/filter, press the
button on top of the air filter restriction indicator to reset it.
Your engine air cleaner/filter is located in the air filter
housing near the front corner of the engine compartment
on the passenger's side of the vehicle. See "Engine
Compartment Overview" in the Index for more
information on location.
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