Problems and Service
Hey Ya'll,
So, I have a 2009 Cobalt 2.2L with 141K miles. Right now I hear a low humming noise in the front end/engine compartment. The odd part is that you cant hear it idling in park or while revving the engine between 1k-3kRPMs. BUT you can hear it going down the road going about 30-50 MPH...