One problem related to front suspension springs has been reported for the 2003 Chevrolet Silverado. The most recently reported issues are listed below.
Under warranty, rear driver's spring sags 3/4 inch and more. Just out of warranty, (40,000) speedometer fails to read accurately, intermittent problem. Rear vew mirror display shows backward "f" for seventies, can not isolate temp from compus. Windshield wipers will not shut off when it rains or car is washed.