The 4L30-E transmission assembly does not have a
fluid level indicator (dipstick). The fluid level can be checked by removing
a plug on the side of the transmission fluid pan. Inspect the following conditions
at regular intervals to provide early diagnosis and prevent major transmission
repairs in the future:
| | This information may be used to correct conditions that could cause
major transmission assembly repairs if not detected early. When adding or
changing fluid use only DEXRON® III. Refer to
Maintenance Schedule
in Maintenance and Lubrication
for service intervals. |
The fluid level should be checked when the transmission reaches normal
operating temperatures of 45°C to 85°C (113°F to 185°F). This
temperature is reached after approximately 24 km (15 miles)
of highway driving.
Fluid level can also be checked when the transmission fluid is
cold (before driving the vehicle). This should be followed by a final check
once transmission reaches normal operating temperature.
| | Important: Transmission fluid is red in color when new. The red dye is added so
the assembly plant can identify the transmission fluid from engine oil or
coolant. The red dye is not a quality indicator and is not permanent. As the
vehicle is driven the fluid will turn darker in color. The color may eventually
turn light brown.
|
| • | Inaccurate fluid level readings will result if the fluid is checked
immediately after the vehicle has been operating under certain conditions. |
| • | In high ambient temperatures above 32°C (90°F) |
| • | At sustained high speeds |
| • | In heavy city traffic during hot weather |
