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.
1997 Pontiac Firebird Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DTCS
| OEM Code | Description |
|---|---|
| 12 | BEGIN DIAGNOSTIC DISPLAY |
| 21 | COURTESY LIGHTS FEED (CIRCUIT SHORTED TO GROUND) |
| 22 | COURTESY LIGHTS RETURN (CIRCUIT SHORTED TO BATTERY) |
| 23 | RETAINED ACCESSORY POWER (CIRCUIT SHORTED TO GROUND OR BATTERY) |
| 24 | FASTEN SEAT BELT INDICATOR (CIRCUIT SHORTED TO GROUND OR BATTERY) |
| 25 | SECURITY LED PRESENT (WITH THEFT DETERRENT ONLY) |
| 31 | COURTESY LIGHTS FEED (CIRCUIT SHORTED TO GROUND) |
| 32 | COURTESY LIGHTS RETURN (CIRCUIT SHORTED TO BATTERY) |
| 33 | RETAINED ACCESSORY POWER (CIRCUIT SHORTED TO GROUND OR BATTERY) |
| 34 | FASTEN SEAT BELT INDICATOR (CIRCUIT SHORTED TO GROUND OR BATTERY) |
| 35 | SECURITY LED PRESENT (WITH THEFT DETERRENT ONLY) |
| 41 | LAST TRANSMITTER MESSAGE RECEIVED VALID |
| 42 | LAST TRANSMITTER MESSAGE RECEIVED HAD INVALID ID |
| 43 | LAST TRANSMITTER MESSAGE RECEIVED HAD SUMCHECK ERROR |
| 44 | LAST TRANSMITTER MESSAGE RECEIVED HAD ENCRYPTION ERROR |
| 45 | RECEIVER PROCESSING CURRENTLY IN 20-SECOND LOCKOUT |
| 55 | BEGIN CONFIGURATION DISPLAY |
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.