I have a 2004 silverado, my entire instrument cluster stopped working. I have no speed, temp, volt or tach reading at all. the driver info will have lights all the way accross or nothing at all. I checked both fuse under hood and checked with volt meter and fuse was good and good current going to fuse. I un-hooked batt to reset computer and no joy. This is stock truck, no after market parts. Have not done any work to truck other than dealer maintenance. Any help would be great. Thanks