Hello everyone. I just bought a 2005 GMC Sierra 2500HD 4x4 Quad cab SLT. I absolutely LOVE this truck! I'm a boat fanatic and can't wait to pull mine with this truck. I'm new to the diesel world but have searched around for a long time. All my buddies own Ford's and wish they had the Duramax/Allison combo. Anyway, I look forward to learning about what this truck can and can't do. Thanks.