What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
1Original wording in English
CHEVROLET, PONTIAC
Reported code forms C1224
TRANSMISSION SLIPS IN 4TH GEAR, STUCK IN 2ND GEAR OR SES/TCS LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODES (DTCS) P0753, P0758, P1860, C1223, C1224 OR C1275 MAY BE SET. *TT
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.