Hello everyone and thanks for such a helpful site. I have a 2006 Envoy with 75k miles on her. I just replaced my A/C coils and yesterday during the 93°heat of florida I started it up and let it idle with the A/C on for about 5 minutes and then all of a sudden steam hissed out from the bottom left side of the engine it had a smell like coolant yet the steam was white. About a week ago I added some coolant to the overflow. Could I have put in too much coolant? Or do I have hose leak? Or is this from the newly installed A/C coils? Thanks in advance for any help.