One problem related to dash wiring has been reported for the 2003 Chevrolet C2500. The most recently reported issues are listed below.
Intermittently dash board lights and gauges will go blank. When the dash board lights go blank consumer cannot determine how fast the vehicle is going. The dealer examined the vehicle five times.
| Electrical System problems | |
| Dash Wiring problems | |
| Horn Assembly problems | |
| Ignition Module problems |