I've tried to search for these exact issues to no avail. I have an October 2010, ve2 Berlina sportswagon. Here's the shortest run-down possible: I was driving with my family on a road trip. 33c outside. Whilst at highway speeds, had the car on auto single zone 22c. Was perfect for 4 to 5 hours and then all of a sudden, I noticed driver side wasn't pushing much air out. So I thought nothing of it, switched driver side temp dial to full cold. Air increased but if felt like there was a blockage in driver side only. Also air was only slightly cool not cold like passenger side. Passenger side was perfectly normal. So I put up with it for a minute thinking there was a malfunction. Anyways, pulled over, switched car off for 5 mind and got back on the road. Only seemed slightly better like driver side air had increased. Then got worse again like it did. Kept driving, switched off hvac completely for about 15 min and dropped windows. Kept driving, put windows up and turned on to full max cold. Unbelievably was like nothing happened! Set it back to 22 auto and it was fine for the last 3 hours of the trip. Since we been back, in the last 3 weeks it's done this twice randomly. I'm at a loss as to what it was. Was the blender stuck? Was there a blockage? Also, how much would Holden charge to update software if it was the problem?