Check Transmission Fluid Level and Condition

NOTE: The vehicle should not be driven if the transmission fluid is below the minimum transmission fluid level or internal failure could result.

If the vehicle has been operated for an extended period of time at highway speeds, in city traffic, in hot weather or while pulling a trailer, the transmission fluid may need to cool down to obtain an accurate reading.

The transmission fluid level will differ depending on operating and ambient temperatures. The correct reading should be within the normal operating temperature range.

Transmission Fluid Level Check

To check the transmission fluid level, REFER to: Transmission Fluid Level Check .

High Transmission Fluid Level

A transmission fluid level that is too high may cause the transmission fluid to become aerated due to the churning action of the rotating internal parts. This will cause erratic control pressure, foaming, overheating, loss of transmission fluid from the vent tube and possible transmission malfunction and/or damage.

Low Transmission Fluid Level

A low transmission fluid level could result in poor transmission engagement, slipping, malfunction and/or damage. This could also indicate a leak in one of the transmission seals or gaskets.

Transmission Fluid Condition Check

Check the transmission fluid level. REFER to: Transmission Fluid Level Check .
Place a drop of transmission fluid on a facial tissue and examine the stain.
If evidence of solid material is found, the transmission fluid pan should be removed for further inspection.
If transmission fluid contamination or transmission failure is confirmed by the sediment in the bottom of the transmission fluid pan, repair the transmission and clean the transmission fluid cooler tubes and the transmission fluid cooler.
If the transmission is to be overhauled or if installing a new transmission, the transmission fluid cooler must be backflushed. REFER to: Transmission Fluid Cooler - Backflushing and Cleaning .