All will be dependent upon the version of the slideout controls that you have. Verify with Marathon that it is not a Valid slide. If it is an 03 conversion then it most likely would be built on an 02 chassis. It shold have version 2 controls : the main slide out controllers in the third bay driver’s side will be blue and yellow. This version still has the linear transducer (Yo-Yo) to tell the system where the slide out is in relation to the opening.
What is the slide doing or not doing? The sequence to open the front slide out is 1. push the button for OUT. Tag axle should dump and the slide seal should deflate. If the seal deflates correctly, then the pins should retract. Once all the pins are out and the controller sees this, then the motor controller is activated and slide begins its journey out of the chassis. When the yo-yo signals that is is at the outer limit, then the controller stops the motor and the seal re-inflates. If you fail any of the steps, the slide will stop and yo will get fashing codes on the led by the seitch and on the ddddddiagnostic led onthe appropriate contoller below int he third bay.
So where do you get inthe above sequence when the slide stops?