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.
2003 Chevrolet Monte Carlo SSFACTORY OEM SERVICE PROCEDURE
Cellular Communication DTCS
CELLULAR COMMUNICATION DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B2455 (Gen. 4) | Open In The Drain Wire Circuit Or A Short To Voltage In The Cellular Microphone Signal Circuit |
| DTC B2455 (Gen. 5) | Open In The Drain Wire Circuit Or A Short To Voltage In The Cellular Microphone Signal Circuit |
| DTC B2470 | VCIM Does Not Detect The Presence Of A Cellular Antenna |
| DTC B2476 (Gen. 4) | Button Depressed Too Long |
| DTC B2482 | A Button Is Pressed Or Stuck For More Than 15 Seconds |
| DTC B2483 or B2484 | VCIM Does Not Detect A Navigation Signal |
| DTC U1500 | VCIM Detects An Internal Communication Malfunction |
Factory Service Tools
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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.