Need help on my 06 cts everything is fine except my gas and temp gauge are not working any ideas thanks!

 

Hello Spike,
I've a European V6 CTS and the same problem. I'm told the 2 are related and there is a thin white signal wire from the door control module that affects it - ???
Haven't got anywhere finding the answer - just started this week - but if I get anywhere I will let you know.
regards, Nick Ireland