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 Saturn L100FACTORY OEM SERVICE PROCEDURE
Cellular Communication DTCS
CELLULAR COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1000 | ELECTRONIC CONTROL UNIT (ECU) PERFORMANCE |
| DTC B1004 | KEEP ALIVE (KAM) RESET |
| DTC B1009 | EEPROM CHECKSUM MISMATCH PERFORMANCE |
| DTC B1327 | DEVICE POWER 1 CIRCUIT LOW |
| DTC B2455 | CELLULAR PHONE MICROPHONE CIRCUIT MALFUNCTION |
| DTC B2470 | CELLULAR PHONE ANTENNA CIRCUIT MALFUNCTION |
| DTC B2476 | CELLULAR PHONE SELECT SERVICE SWITCH MALFUNCTION |
| DTC B2483 | GLOBAL POSITIONING SYSTEM (GPS) SENSOR CIRCUIT - LOW |
| DTC B2484 | GLOBAL POSITIONING SYSTEM (GPS) SENSOR CIRCUIT - OPEN |
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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