One problem related to radio/tape cd player has been reported for the 2004 Chevrolet Silverado. The most recently reported issues are listed below.
The vehicle has problems shifting from first to second gear. Sometimes the gears change smoothly, and other times there is a thumping sound accompanied by jerking. This problem has occurred at least four times in the last month. In addition when making the transition from a low speed to a higher speed the vehicle's transmission would not engage into the proper gear. This made it seem like the vehicle was in neutral. The dealer fixed the problem with a retrofit kit and the vehicle seems to be working fine. The vehicle's cd player was not functioning properly. The dealer replaced and reprogrammed the cd player.