Terrain FWD L4-2.4L (2010)
Fluid - A/T: Testing and Inspection
6T30/6T40/6T45 - Automatic Transmission
Transmission Fluid Level and Condition Check
This procedure checks both the transmission fluid level, as well as the condition of the fluid itself.
Caution: Use Dexron VI transmission fluid only. Failure to use the proper fluid may result in transmission internal damage.
Note: Ensure the transmission has enough fluid in it to safely start the vehicle without damaging the transmission. With the vehicle off and the
transmission fluid temperature at approximately 20-25°C (68-77°F) there must be at least enough fluid to drain out of the fluid level hole. This will
ensure that there is enough fluid in the sump to fill the components once the vehicle is started.
Non Dipstick Level Checking Procedure
1. Start the engine.
2. Depress the brake pedal and move the shift lever through each gear range, pausing for about 3 seconds in each range. Then move the shift lever
back to PARK (P).
3. Allow the engine to idle 500-800 rpm for at least 3 minutes to allow any fluid foaming to dissipate and the fluid level to stabilize. Release the
brake pedal.
Note: If the TFT reading is not at the required temperature, allow the vehicle to cool, or operate the vehicle until the appropriate TFT is reached.
If the fluid temperature is below the specified range, perform the following procedure to raise the fluid temperature to the specification.
Drive the vehicle in second gear until the fluid temperature is at the specified temperature.
4. Keep the engine running and observe the transmission fluid temperature (TFT) using the Driver Information Center or a scan tool.
Caution: The transmission fluid level must be checked when the transmission fluid temperature (TFT) is at 85-95°C (185-203°F). If the TFT is
not at this temperature, operate the vehicle or allow the fluid to cool as required. Setting the fluid level with a TFT outside this temperature will
result in either an under or over-filled transmission. TFT 95°C under-filled, TFT 85°C over-filled. An under-filled transmission will cause
premature component wear or damage. An over-filled transmission will cause fluid to discharge out the vent tube, fluid foaming, or pump
cavitation.
5. Raise the vehicle on a hoist. The vehicle must be level, with the engine running and the shift lever in the PARK range.
6. While the vehicle is idling, remove the oil level set plug. Allow any fluid to drain.
Oil Level Plug (1)
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If the fluid is flowing as a steady stream, wait until the fluid begins to drip.
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If no fluid comes out, add fluid until fluid drips out.
