I just returned to Michigan from Savannah Georgia. On the way home the temperature dropped from 60s to 20s. My wife kept complaining that her feet were freezing. She was sitting right rear. I reached back and sure enough there was cold air coming out of both the upper vents and the foot vents under the front seats. I realized that there are no actual controls for climate in the rear seat area. I turned the front foot heat to high temp and fan which made warm air come to the rear vents but after a while the front passengers were overheating but the rear passengers were comfortable. Making the front passengers comfortable (about 70 degrees) made cold air come out the rear vents again. Is this normal? BTW I towed a 7000 LB trailer with the 3.21 axle. It towed really well and I didn't really need more power. MPG was 9.2 in Michigan and dropped to about 7.9 in the mountains. If I towed more I'd replace that 26 gal. fuel tank.