Did your 'Burb come from the factory with the tow package: receiver hitch, 7 pin plug, HD cooling?
There is a sticker in the glove box with all the option codes. I will try to find the code for the axle ratio for you.
Chances are you will be ok. As mentioned, the biggest obstacle is the payload of your 'Burb. ANY passengers, cargo in the 'Burb: coolers/ firewood/ etc, any accessories added to the 'Burb, the wdh weight, AND the tt tw (travel trailer tongue weight) all count toward the payload amount listed on the yellow sticker in the drivers door jamb.
