get a big hammer (because a smaller one will take much longer ) and give them a decent twating

the front ones will pop out with not a lot of hassle, but the rear ones might need a bit of twidling to get out due to the design of the rear of the hub carrier

assuming you are talking about a sierra yes?

also, when you put them back in again, use a spare set of wheel nuts and just tighten them up until the studs are pulled tight