[gearhead]

At the 2 year point they offered me extended warranties. We had lots of refrigerator problems so I took them up on it. If you have a 120 volt residential fridge, maybe not.
Yes I would go to a 1 ton asap. If you stay with Chevy you may want to go to a dually. My single rear wheel Ram has a payload a bit over 4,000, my similarly equipped Ford was 3200. Chevy was in between. Watch that yellow sticker inside the drivers door. Filling that big storage bay adds weight quick and you have already added washer and dryer. Throw the weight of the hitch on the truck and add a passenger and it gets up there.
I would go weigh the truck empty then weigh with the trailer before you add a lot of cargo. Give you a starting point. Then re-weigh when you add cargo to get your "travelling weight".