I have a broken speedometer on my 04 chevy silverado. My gauge does not read the correct mph and is sometimes at 0 mph. Any help suggestions would be greatly appreciated.

 

It's probably the little motor that runs the speedo. You can find those and change them yourself. Mine screwed up and I took it apart and sprayed some contact cleaner in it and it works just like new. This is a common problem for these trucks.