No, there is no reservoir for you to top up. Did you check the level and it indicates it is low?
1. Transmission is not equipped with a dipstick. Ensure vehicle is level, with engine running at idle and parking brake applied. Ensure fluid temperature is less than 90 F (30 C). Move gear selector through all gear positions, ending in "P" position.
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. 2.