How much transmission fluid

FLUID CAPACITIES

NOTE: Capacities given are approximate. Correct fluid level should be determined by fluid level check procedure, rather than amount of fluid added. As a rule of thumb between 5 and 6 qts. but you should stat checking the fluid at 4 1/2 quarts.

This guide should help you out

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Refilling
To install fluid pan, gasket and filter, reverse removal procedures. See Fig. 9 and Fig. 10 .
Hold the larger drain plug with a wrench and remove the small (center) fluid level indicating plug using a 3/16" Allen key. Install the Fluid Level & Fill Plug Adapter (307-437) into the pan. See Fig. 4 .
Prior to filling the Fluid Transporter/Evacuator/Injector (307-D465) with clean transmission fluid, make sure that the canister is clean. See Fig. 5 . Fill the special tool with clean automatic transmission fluid. Hang the fluid transporter/evacuator/injector under the vehicle, upright and close to the transmission.
Connect the open end of the fluid hose from the fluid transporter/evacuator/injector to the fluid level and fill plug adapter at the bottom of the transmission fluid pan. See Fig. 6 .
Apply a maximum of 30 psi (206.85 kPa) to the open end of the vacuum/pressure hose from the Rubber Tip Air Nozzle (100-D009). See Fig. 7 . Fluid will immediately start flowing out of the special tool into the transmission fluid pan.
Add 2 or 3 quarts of transmission fluid into the fluid pan. Stop the process by releasing the air pressure and removing the air nozzle from the end of the hose. Engine idle speed is approximately 650 RPM. Start and run the engine until the transmission fluid temperature is between 80-120°F (27-49°C).
Inspect the fluid level in the special tool. If the fluid drains back into the canister, the transmission is full. If no fluid drains back, more fluid will need to be added. Repeat steps 6 and 7 .
Once the transmission is full, place a hand vacuum pump on the open end of the vacuum/pressure hose of the Vacuum Pump Kit (416-D002) and apply vacuum to the system. See Fig. 8 . This will pull out any extra fluid trapped in the system and direct it into the container.
Allow the fluid to drain. When the fluid comes out as a thin stream or drip, the fluid is at the correct level. Reinstall the small (center) fluid level indicating plug using a 3/16" Allen key