I have 2007 silverado that the battery has started to drain within a few hours. I searched for drain and noticed that the tach and speedo will drop below zero and then jump back up to zero about every 30 seconds when the key is off. Any suggestions on what would be causing the cluster to do this?

 

Hi firebirdguy269,

I'm sorry to hear of this concern. I am not a technician and I'm not properly trained to offer technical advice but I will be glad to look into this for you. If any extra help is needed, please send us a private message referencing your concern. We look forward to hear from you soon!

Kristen A.
Chevrolet Customer Care