I feel your pain...
We had a similar experience on a recent 1500 mile trip, but no slides or levelers and LCI told me we needed to replace the $800 electric hydraulic motor, which I did on my own, only to discover that the solenoid was also bad, replace that ($100), then tested numerous times, everything worked like it should.
Then went our our first trip and tried to drop the levelers and the motor, wires all all smoked!!!, filled up the coach with smoke. No slide or levelers.
Called our dealer and earliest appointment was a couple of days short of ONE month away (which is this Tuesday) However they tell me it could still be 3-4 weeks BEFORE they even look at it. Then have to fix it.
We have an annual family trip that we go on every year for the lat 20 years, however this year was even bigger as family has grown and we have 8 site and cabins.
Not a "happy camper"