The new GMC Sierra 3500HD is here at Mike Haggerty Buick GMC in Oak Lawn and it's ready for action. This truck is the ultimate taskmaster. Whether you're towing a large RV trailer, a boat, or have heavy hauling to do, you can't find a better truck for the job anywhere. The GMC Sierra 3500HD is available with either a gas or Duramax diesel engine and comes in different configurations so you can buy the right truck for the right big job. Our customers at Mike Haggerty Buick GMC come from all over--from Chicagoland to Naperville because we always carry a great selection of new GMC trucks. Drive on over and see us today to learn more about the new Sierra 3500HD.