Squeaky driving

I have a 97 Chevy Venture with 118k miles on it. While driving, every speed bump or anything I go over, the van just starts queaking loudly. Even getting into the car without it on, it squeaks. I am positive the squeaking is coming from the front of the van. I think it is the shocks, my husband thinks it could be the bushings. I was just curious what it was and how much it would cost to fix it since we are tight on money. Any ideas would be much appreciated!