Between the front seats is a dual level storage container. The top portion has a flip-up notepad holder and a shallow bin. Underneath is a larger, lockable bin with another 12 volt power point and enough room for CD's, cassette, phones and valuables. The lid for the lower storage bin flips up sideways and is more easily accessible by the driver than the front passenger. The automatic climate control features separate rear heater and air conditioner controls located on the overhead console above the driver and passenger - I think these should be located at the rear so that rear passengers can use them.
Rear passengers do have their own roof-mounted air vents.
Second row passengers also have two 12 volt power outlets, two flip-down cupholders, and their own outboard seat heaters. The second row centre seat converts to an armrest with two additional cupholders and a storage tray. Third row passengers have two outboard cupholders and outboard storage bins. The Denali's cargo area has a 12 volt power outlet, a cargo net, and a power door lock button at the rear. There's also a separate rear liftglass panel for throwing lighter items into the trunk.