GM Customer Service
Full Access Member
I think it has something to do with coolant flowing. Mine does the same thing and it sounds like it's coming from under the dash. It also does it in the back where my rear air is.
CWgauge,
I apologize that you’re also experiencing a concern with your vehicle. Like Sumo, I’m curious if you’ve discussed this with your dealership at all. If you could let me know I would appreciate it.
Thanks,
Laura
GM Customer Service