One problem related to software has been reported for the 2004 Chevrolet Silverado. The most recently reported issues are listed below.
While driving, the service brake light appeared on the dashboard and remained on. The consumer took the vehicle to the dealer for inspection, and the mechanic determined that computer has to be reset by the manufacturer. At this time the software had not been approved by the epa. The vehicle was operating as designed. The consumer was unsure if the system was working properly.