At Dave Sinclair Buick GMC Pontiac, check out our specials, rebates and incentives on 2005 and 2006 Buick GMC Pontiac cars and trucks. These include the Buick Lucerne, Buick Lacrosse, GMC Envoy and GMC Yukon and any other model we sell. With these offers, you can save thousands on the new car or truck your looking for.