Where is the dipstick for transmisson fluid?

CHECKING FLUID LEVEL

4L30-E Transmission (Rodeo, Passport, SLX & Trooper)

1. Transmission is not equipped with a dipstick. Ensure vehicle is level, with engine running at idle and parking brake applied. Fluid temperature must be less than 90°F (30°C). Move gear selector through all gear positions, ending in Park.

2. Let engine idle for 3 minutes and open OVERFILL screw on bottom of pan. Transmission is filled through OVERFILL screw. Fluid will seek correct level and excess should flow out from OVERFILL screw. See Fig. 1.