Excessive heat is the enemy of any fluid that your C5 depends on—including your steering fluid. Here's something from Turn One that'll beat that heat....
...it's their new power steering pump and pulley for your 1997-2004 Vette. It's designed to take less power to turn it, which keeps your power steering fluid that much cooler---and be less of a draw on your engine, too.It also features a pulley design that lets you access the pump’s bolts without taking off the pulleys, a time-saver while you’re working underhood. Turn One Inc. (877) GO-TURN-1 (877-468-8761)www.turnone-steering.com