GMC 2003 Envoy - Manual (Page 316)

To check or reptace the engine air deaner/filter.
do Ihg following:
1 Remote Ihg thneg screws on 1he ongine sir
clearier/fjlter and lift off the cover.
2, Twist out Ihe old engine air cleaneoTilter and
replace it with a new one, if needed,
3, Reinsiall 1 he cover.
A CAUTION:
Operating ihe engine with the air cieanertfiiter
off can cause you or others to he burneh. The
air cleaner not only ciear^s the air, it stops
flame if the engine baokfires. If
h isn't there
and Ihe engine backfires, you could be burned.
Don't drive with
it oft, end be Careful working
on the engine with the air cleanertfilter oN.
Automatic Transmission Fluid
When to Check and Change
A good tine to chock your automalic Irfinsmiasion fluid
level Is when Ihe engine oil Is changed
Change both the fluid and filter every 50,(ЛЮ miles
(03 000 km) if the vehrcle ts mainly driven undet one or
more o! these conditions;
■ In hgavy ci|y trattic where the outside temperalure
regularly reaches 90-"F (32'’C) or higher,
• In hilly Or mountainous terrain.
• When doing frequenf iraller lowing.
• Uses such as found in lax^ police or delivery
service.
It you dQ nol use your vehicle under any of these
conditions, change ihe fluid and filter every
10O.OOD miles (166 ODD km).
Notice: If the air cleaner/filter is off, a backfire car^
cause a damaging engine fire. And, dirt can easily get
Into yourenglrte. which will damage it. Always have
the air cleanertfilter tn place when you’re driving.
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