GM Volt Forum banner
1 - 1 of 1 Posts

·
Registered
Joined
·
124 Posts
the HMI module is just behind the main cluster and it has a cooling fan. I wonder if this could be the source of your noise. But in the case Barryk explained, I cannot see why the speed of the vehicle has an effect on this so that could be something else.
 
1 - 1 of 1 Posts
Top