fuel guage / speedometer

What is your question?

The fuel gauge is wrong most of the time in my 04 Rendezous and once in a while the spedometer will read low.When you turn the key on but don't start the car, the guage go throught there prestart check and from the fuel gauge erea it sounds like a motor running while the gauge is moving.you can turn the key on and off untill you get the gauge to stop where you think the gauge should be. same with the speedometer, turn the key off and on until the pointer is on "0 mph", and then start it and hope it is still on "0". Sounds like the dash cluster to me, hope you have a different solution.