Unknown Noise

[Troops2990]

I haven't really been able to find anything on here that sounds similar so hopefully somebody can help. When going above 55 MPH from time to time i will hear a noise from the passanger side that sounds like the speaker on the pillar by the windshield is blown. I will hear that crackling noise but it doesn't go away once the radio is muted and will do it for a second or two and cycle for about 30 seconds, then i may not hear it again for 20 minutes. it is a 2008 sierra crew cab 1500

[music]

Check out: http://www.gm-trucks.com/forums/index.php?showtopic=99440

[Rob1]

Check out: http://www.gm-trucks.com/forums/index.php?showtopic=99440

 

 

Sound like the issue I was talking about...... dealer fixed it - well sort off as I think I still hear something. Once the weather warms up I'll be looking around for anything else loose.