Your cluster is bad. The stepper motor for your tachometer went out. This is a common problem for MY 2003-2007. Visit your local speedometer shop for repair or there are online options. Have them replace all of the stepper motors and all of your bulbs while they have the unit apart.

 

What he said. You can save at least $100 if you know how to solder on a circuit board and buy the stepper motors yourself. I bought genuine updated replacements off of ebay for around $30, the kit usually comes with new light bulbs as well.

 

Thanks very much for the information. I am planning on looking into it.

 

I had all kinds of problems with my gauges none working ect. Turned out to be cruise control fuse in the cab and the radio fuse under the hood maybe check into that it was driving me nuts and everyone told me the same thing it's the cluster ended up being a fuse lol