Chevrolet 2002 Venture Owner's Manual page 241

Rear Temperature Control
Press the TEMP button in the overhead entertainment
console to adjust the temperature of the air to the rear
seat. Press the left arrow button to make air cooler.
Press the right arrow button to make the air warmer.
Rear Air Vents
To maximize airflow through the rear floor outlet, place
the left bucket seat in the second row in the forward
position. See "Adjusting Rear Seats" in the Index.
The vent behind the left rear seat is the cold air return
vent. Be sure to keep it free of obstructions.
Keep the area around the base of the center instrument
panel console, between and under the front seats, free of
objects that could obstruct airflow to the rear.
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