Hi Board,
New here. I am looking at getting a 2005 GMC Sierra 2500HD regular cab 4x4 automatic 4.10?? (turns about 2500 RPM at 70mph) 6.0 vortec with the work truck package. I test drove it and it ran fine. Rides a little rough but thats to be expected with a 3/4 ton. (just a 1/2 ton owner)...