Speedometer in 05

[TOI-MAT]

My speedometer is messed up. Two days ago when I got in it was on 50mph when I took off it moved as I accelerated at a normal rate, but it was off by 50mph. Today it was down to 30mph when I got in still moves when I accelerate just off 30mph now. Has anyone else had this issue in their H2? Was this a recall that I missed? I am aware that there has been a similar problem in Silverado's, was told by a friend it may be the "step motor" and I would need a whole new instrument panel about $500.