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Message: <blockquote data-quote="DenaliSS" data-source="post: 29471" data-attributes="member: 12689">Yes the engine did have less HP. I always wondered why they did that. The whole point of the Sierra Denali was for trailer towing. The rear steering has 3 selections. Lock straight, 4 steering and 4 wheel trailer steering. Pulled a trailer a lot when I was working, could turn in very tight places. Like you said it make parking almost anywhere Super easy. I have tried to help with the HP Issue by adding aftermarket dual exhaust, Volant CAI, Accel Coils, Granitilli Plug wires, etc. I have a TBSS manifold to install when I do the cam, springs, Rockers change(streetable). Then the supercharger. Your comment on little boost at cruise does interest me. So I am going to look into that. I think it was you who said I will drive this truck till they have to pry it from my cold dead hands . Also that’s for your quick response.DB</blockquote>