One problem related to electrical system has been reported for the 2003 Chevrolet C4500. The most recently reported issues are listed below.
While driving 60 mph vehicle stalled. Consumer was unable to restart vehicle, and had it towed to the dealer for inspection. Mechanic determined that the temperature sensor needed to be replaced, and replaced it. However, the problem recurred, and vehicle was taken back to the dealer . Mechanic replaced the computer sensor, and the problem recurred again.
| Wiring problems | |
| Electrical System problems |