Originally Posted by Tomc587
Hi guys need some help. I have an 07 GC limited with dual climate when I have it on hot air I get a whistling sound but when it's on A/C it sounds normal any one else have this problem or had it and know what the issue is. Please help thanks.
Has anyone else had this issue or come up with a fix? I have an 08 GC Limited with dual climate control. No noise at all when using A/C. When using heat, can turn the fan up to about 30% then a whistling sound starts and gets louder as the fan is turned up. I am about to tear everything apart guessing that it is one of the actuator doors not closing all the way and letting air pass by it (vibrating like a reed in a musical instrument). My dealer has replaced the blower motor under warrenty twice, but it is still making the noise.
I was just going to leave it until I can order a new Trailhawk, but the thing is driving me nuts!!