One problem related to fog lights has been reported for the 2004 Chevrolet Avalanche. The most recently reported issues are listed below.
The headlamps, parking lamps, fog lamps, and daytime running lamps have condensation form on the inside of the lenses during cold weather after the lights have been turned on. This reduces the effectiveness of the lights and can lead to unsafe driving conditions. The dealer refuses to replace the lamps under warranty even though NJ division of motor vehicles says they will fail the vehicle when I take it for the state motor vehicle inspection.
| Fog Lights problems | |
| Tail Light Switch problems | |
| Exterior Lighting problems |