I have the exact same year & model I called Keystone & Lippert to make sure it didn't void the warranty. I had to raise it 2 bolt holes all the way around to clear a steep driveway the center Jack's top bolts are the hardest but still very do able combination wrench & a breaker bar plus a tube of loctite. Also while your at it remove your pads and loctite those bolts also.
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2015 GMC Denali 2500hd D/A
2016 Montana 3160rl Legacy
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