here’s always a lot of projects to cram into an all-too-brief Upper Midwest summer, but I’ve been finding time to work on the 1991 GMC Suburban 2500. It’s a neat, old 3/4-ton truck that ordered in late 1991 with the 454-cid V-8, which still has some snort after 234,000 miles of hauling magazines to car shows. Despite the
