- Apr 9, 2012
- 936
I've got another problem, it feels like I've entered a domino effect with the repairs being done to the Envoy so far. My latest issue is that my heat isn't working properly, and it was fine up until I had the battery disconnected. Long story short, PCM was sent out for a tune and had DoD disabled. Hooked everything up, used the A/C for a bit (took awhile to get cold) this week because of s sudden heat wave, and now we're back in the 40 deg range. Turned the heat on, had the climate control set to 80 and it blew cold/warmish. Everything is fine if you crank it to 90, but once you back it down to 85 or under it blows cool....almost like the the outside air is blowing in. I have tried to do an HVAC reset, pulled the 10A fuse for 15-20 seconds, got in, turned the key to on and let the doors calibrate for 90 seconds and then started it up without much of a difference.