Lighting DTCS
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 GMC C3500 HD, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
LIGHTING DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1397 | 5 Volt Reference Output Circuit Voltage Low |
| DTC B1398 | 5V Reference Circuit Voltage High |
| DTC B1480 | Courtesy Lamps Supply Voltage Circuit Voltage Low |
| DTC B2527 | Front Fog Lamp Switch Signal Circuit Is Shorted To Ground |
| DTC B2577 | Headlamp Relay Coil Supply Voltage Circuit Shorted To Ground |
| DTC B2585 | Interior Park Lamps Supply Voltage Circuit |
| DTC B2613 | Instrument Panel Lamp Supply Voltage Circuit Is Shorted To Battery Voltage |
| DTC B2617 | Courtesy Lamp Relay Coil Control Circuit Is Open Or Shorted To Ground |
| DTC B2618 | Courtesy Lamp Relay Coil Control Circuit Is Open Or Shorted To Ground |
| DTC B2642 | Ground Illumination Relay Control Circuit Is Open Or Shorted To Ground |
| DTC B2643 | Ground Illumination Relay Control Circuit Is Shorted To Battery Voltage |
| DTC B2647 | Ambient Light Sensor Input Voltage Low |
| DTC B2648 | Ambient Light Sensor Input Voltage High |