System: warning labels.vehicle description: white and autocar model heavy duty trucks 33,000 lbs.gvwrand greater, manufactured between november 26, 1984 and december 10, 1987.white GMC acl, acm, wia, wil, wca, wcl and wcm model heavy duty trucks 33,000lbs. Gvwr and greater, manufactured between january 11, 1988 and may 13, 1988.