Is there rear heat in a 2003 GX 470 or is it just rear AC? I was trying to read up on this and all i could find was the rear system was only for AC. It's throwing me off , because i think on the right side of the system (behind the middle counsel) if you put the setting on there it has a red color to it all the way to the right. I dont seem to get any heat out of the system in the back if its controlled by the second row.

It should heat up if you set it to the warmer side like you mentioned.

I always thought it was just for AC and provided no heat. There are heat ducts under the front seats that blow on the second seat occupants feet though. They are controlled from the main climate controls on thje dashboard.

the center counsel don't have heat contorl. it's only for A/C