I have an 09 Envoy that has 2 issues:
1) If any door is opened while vehicle is running and key chime is activated a buzz will come thru RF Upper speaker and go away when the interior lite dims.
2) While driving there is a noise which is hard to describe that comes thru the RF Upper Speaker which is related to engine RPM, the noise goes up and down with RPM.
Delaer has replaced radio, both front door speakers and now RF Upper Speaker with no change.
Open to Suggestions since dealer is at a loss
1) If any door is opened while vehicle is running and key chime is activated a buzz will come thru RF Upper speaker and go away when the interior lite dims.
2) While driving there is a noise which is hard to describe that comes thru the RF Upper Speaker which is related to engine RPM, the noise goes up and down with RPM.
Delaer has replaced radio, both front door speakers and now RF Upper Speaker with no change.
Open to Suggestions since dealer is at a loss