There is plenty of support for all other diesel trucks. Most of the posts here (I searched) touch lightly on mechanical/electrical issues for the Isuzu/GMC NPR. Does anyone know of a site that has more members with NPR trucks? I only count a few owners here with NPRs. My current issue is with a broken exhaust break. Does anyone with NPRs have experience with the exhaust break system? I have a 95 1/2 model year. Your help will be greatly appreciated. Thanks.