Chevrolet 2006 Tahoe Specifications download pdf (Page 391)

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

part 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.

Checking the Fluid Level

Prepare your vehicle as follows:

1. Park your vehicle on a level place. Keep the engine

running.

2. With the parking brake applied, place the shift lever

in PARK (P).

3. With your foot on the brake pedal, move the shift

lever through each gear range, pausing for about

three seconds in each range. Then, position

the shift lever in PARK (P).

4. Let the engine run at idle for three minutes or more.

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Chevrolet 2006 Tahoe Specifications Page 391

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