open both the extend and retract valves for the gen slide. you should be able to pull it out. maybe with a little help from a friend.
download a service manual for your system and do the diagnostics as far as you can. i know restricted areas are hard to get to, but somehow, you need to check the motor.
go down to the motor and check it to see if it works at all. jumper from the battery cable on the master relay to the back of the motor. if the motor attempts to turn, open the extend valve and run the gen slide out.
either way, it appears to be a 12 volt relay, or the motor, but you wont know till you try,
text me at 602-549-3638 with your number, which system you have and the model and year of your coach, and i will help you with the diagnostics.
i do not sell product, parts, or solicit service work on this forum