GMC 2003 Envoy - Manual (Page 315)

Engine Air Cieaner/Filter
The encfine air deaner/fliter
is tecaietJ toward the from
oi Ihe engjne compartment
on the passenger’s side
Cii the vehide.
See Engine Compariin&ni Overview on pnga 5-irfor
more infonmation on engine air cfeanar filler IcxaTion.
Vour vehicle may have this
leature The engine air
deaner/flller assembly has
an indicalof lhal lets
you know when Iha air
filter is dirty and needs to
be Servlcedn The
indioalof is locaied on the
engine air deaner/fiher
air dud
The service window |A) wrth the percentaga scale
shows the amount of engine air cleansr/flHer life used.
When bolh service
w I th J ow {A j
and sorvico window (B)
turn orange, replace the engine air cleaner/TjIter,
After changing the engine air clean&r/iiltar, press Ihg
button on top of the indicalor to reset ir
For vehicles without an indicator, rotor 1o the
maintenance schedule to detemnine when to repface
The engine air cieaner/fllter.
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