Hi All- I have a 2006 Dodge 2500 with automatic transmission. It's still fairly new to me. When I try to hit the shifter left (-) or right (+), nothing seems to happen. I see nothing indicating that I am in a different gear on the dashboard, nor do I hear anything indicating it has changed gears from how the engine sounds/behaves. Anyone have any thoughts? I'm in Colorado so it'd be helpful downshifting on those long mountain passes! Thanks in advance for your comments.