Chevrolet 2009 Tahoe Automobile User Manual


 
Automatic Transmission Fluid
(6-Speed Transmission)
When to Check and Change Automatic
Transmission Fluid
It is usually not necessary to check the transmission fluid
level. The only reason for fluid loss is a transmission leak
or overheating the transmission. If you suspect a small
leak, then use the following checking procedures to check
the fluid level. However, if there is a large leak, then it
may be necessary to have the vehicle towed to a dealer/
retailer service department and have it repaired before
driving the vehicle further.
Notice: Use of the incorrect automatic transmission
fluid may damage the vehicle, and the damages
may not be covered by the vehicle’s warranty.
Always use the automatic transmission fluid listed in
Recommended Fluids and Lubricants on page 6-13.
Change the fluid and filter at the intervals listed in the
Maintenance Schedule. See Scheduled Maintenance on
page 6-4. Be sure to use the transmission fluid listed
in Recommended Fluids and Lubricants on page 6-13.
How to Check Automatic Transmission
Fluid
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.
Before checking the fluid level, prepare the vehicle as
follows:
1. Start the engine and park the vehicle on a level
surface. Keep the engine running.
2. Apply the parking brake and place the shift lever in
P (Park).
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, move the shift
lever back to P (Park).
4. Allow the engine to idle (500 800 rpm) for at least
one minute. Slowly release the brake pedal.
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