Chevrolet Tahoe, Suburban 2007 Spécifications télécharger pdf (Page 459)

100

101

How to Check Automatic Transmission

Fluid

Because this operation can be a little difficult, you

may choose to have this done at the dealership

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. Too little ﬂuid could

cause the transmission to overheat. 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:

• When outside temperatures are above

90°F (32°C).

• At high speed for quite a while.

• In heavy traffic — especially in hot weather.

• 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).

Get the vehicle warmed up by driving about

15 miles (24 km) when outside temperatures are

above 50°F (10°C). If it is colder than 50°F (10°C),

drive the vehicle in THIRD (3) until the engine

temperature gage moves and then remains steady

for 10 minutes.

A cold ﬂuid check can be made after the vehicle

has been sitting for eight hours or more with

the engine off, but this is used only as a reference.

Let the engine run at idle for ﬁve minutes if

outside temperatures are 50°F (10°C) or more. If it

is colder than 50°F (10°C), you may have to idle

the engine longer. Should the ﬂuid level be

low during this cold check, you must check the

ﬂuid hot before adding ﬂuid. Checking the ﬂuid hot

will give you a more accurate reading of the

ﬂuid level.

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