Automatic Transmission Fluid
When
to
Check
and
Change
A
good time to check your automatic transmission fluid
level
is
when the engine
oil
is changed.
Change both the fluid and filter every
50,000
miles
(83
000
km)
if the vehicle is mainly driven under one or
more of these conditions:
In
heavy city traffic where the outside temperature
regularly reaches
90°F
(32°C) or higher.
In
hilly
or mountainous terrain.
0
When doing frequent trailer towing.
0
Uses such
as
found
in
taxi, police or delivery service.
If
you
do not use your vehicle under any
of
these
conditions, the fluid and filter do not require changing.
See “Scheduled Maintenance Services”
in
the Index.
How
to
Check
Because this operation can be a little difficult, you
may choose to have this done at your
GM
dealer
Service Department.
If
you do it yourself, be sure to follow all the instructions
here,
or
you
could
get
a
false reading
on
the dipstick.
NOTICE:
-
Too
much or too little fluid can damage your
transmission.
Too
much can mean that some of
the fluid could come out and fall on hot engine
parts or exhaust system parts, starting a fire. Be
sure to get an accurate reading if you check your
transmission fluid.
Wait at least 30 minutes before checking the
transmission fluid level
if
you have been driving:
0
When outside temperatures are above
90°F
(32°C).
0
At
high speed for quite a while.
In
heavy traffic
--
especially
in
hot weather.
0
While pulling a trailer.
To
get the right reading, the fluid should be at normal
operating temperature, which is
180°F
to 200°F
(82°C to
93°C).
6-
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