First, roll it back on it's wheels.

Just kidding.
There should be plastic knobs on the sides that you reach by getting in behind it. Will the top of the dash lift up? Thats how I get to mine.
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Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back.
Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!