Charge your RV battery. Most slide out systems require 12 volts of DC electricity from your batteries to operate.
Clear the area. Make sure all the cabinet doors and drawers are closed. You may want to remove furniture and loose items from the slide out room before proceeding.
Check outside to make sure you have adequate room to extend your slide out. You do not want to hit another RV, tree or other obstruction.
Lower the leveling jacks, which extend from beneath the rear of your RV. Depending on your leveling system, you will either have to push a button to lower the jacks or have to crank the jacks down. The RV must be level before you extend the slide out so the slide out does not bind.
Place stabilizing jacks under your RV. Stabilizing jacks help to prevent your RV from moving, and keep it level. If you are parked on soft ground or your jacks are too short, place wooden blocks beneath them. Some RVs have stabilizing jacks pre-installed.
Unlock the travel locking devices on your slide out, if your RV is equipped with them.
Push the button that extends your slide out.
