Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Lighting DTCS
LIGHTING DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1482 | Short To Ground Or Open In The Inadvertent Power Relay Control Circuit |
| DTC B1483 | Short To Voltage In The Inadvertent Power Relay Control Circuit |
| DTC B2532 | Short To Ground Or Open In The Fog Lamp Relay Coil Control Circuit |
| DTC B2533 | Short To Battery In The Fog Lamp Relay Coil Control Circuit |
| DTC B2552 | Short To Ground Or Open In The Backup Lamp Relay Control Circuit |
| DTC B2553 | Short To Battery In The Backup Lamp Relay Control Circuit |
| DTC B2577 | Short To Ground Or Open In The Headlamp Relay Coil Control Circuit |
| DTC B2578 | Short To Battery In The Headlamp Coil Control Circuit |
| DTC B2582 | Short To Ground Or Open In The High Beam Signal Circuit |
| DTC B2587 | Short To Ground Or Open In The Park Lamp Relay Coil Control Circuit |
| DTC B2588 | Short To Battery In The Park Lamp Relay Coil Control Circuit |
| DTC B2602 | Short To Ground Or Open In The Drl Relay Coil Control Circuit |
| DTC B2603 | Short To Battery In The Drl Relay Coil Control Circuit |
| DTC B2617 | Output For The Courtesy Lamps Supply Voltage Circuit Is Low |
| DTC B2618 | Courtesy Lamps Supply Voltage Circuit High |
| DTC B2647 | Short To Ground In The Drl Ambient Light Sensor Signal Circuit |
| DTC B2648 | Ambient Light Sensor Signal Circuit |
| DTC B2650 | Short To Ground Or Open In The Headlamp High Beam Signal Circuit |
| DTC B2651 | Short To Ground Or Open In The Of The Headlamp High Beam Signal Circuit |
| DTC B2654 | Courtesy Lamp Low Control Circuit Low |
| DTC B2655 | Short To Battery In The Courtesy Lamp Low Control Circuit |
| DTC B2665 | Short To Battery Or Open In The Park Lamp Circuit |
| DTC B2742 | Short To Ground In The Fog Lamp Switch Signal Circuit |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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