my 2004 chevy trailblazer LS V6 speedometer is going haywire. what can i do to have it fixed?
HI! You have NO Cable to operate your Speedometer. it is all electronic ( and i do not mean digital ! ) The Speed Sensor could not be at fault for this type of Problem either! I have seen this Many Many times in Chevy , Gmc Buick Pontiac Etc vehicles. The Problem lies in the Speedometer Cluster. These Clusters made after 2000 have Stepper Motors to drive all the gauges. The Tachometer and Speedometer are the Most prone to failure as they are used the most! It is best to have the Instrument Cluster Removed and Repaired or Replaced. A junkyard Replacement is ok but make sure you get a guarantee. I pull at least one cluster a week and repair them for this same sort of problem! I would charge $150 to repair the cluster plus shipping. I hope this helps Good Luck!