This is a Schwintek In-Wall slide made by Lippert. I'll assume you can retract the slide back to fully retracted but then when extending one side gets stuck. If this is in fact true the same exact thing happened to us on the closet/bunk bed slide on the 3170. Grab some WD40 in a pinch or CRC Power Lube (talked about here
) and spray the lower and upper motor tracks. This fixed ours completely and we've been going strong since.
Please take a look at this Override Guide
for instructions on troubleshooting the slideout.
I only know this from what I've learned on this message board, experience and taking the rig in to get the slide-out fixed.
Hopefully this helps!