HomeC0300 · Code meaning and manufacturer information
Chassis

C0300

Code meaning and manufacturer information

C0300

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.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer communications

2

Original wording in English

0305S003

ISUZU

Reported code forms C0300

SERVICE 4WD LIGHT ON, 4WD INOPERATIVE, DIAGNOSTIC TROUBLE CODES (DTC) C0300 AND/OR C0305. *TT

Read communication ↗

030421005

CHEVROLET, GMC, OLDSMOBILE

Reported code forms C0300

SERVICE 4WD LIGHT ON, 4WD INOPERATIVE, DIAGNOSTIC TROUBLE CODES C0300 AND/OR C0305 SET. *TT

Read communication ↗

Check vehicle applicability

9

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
ChevroletSILVERADO2003
ChevroletSUBURBAN2003
ChevroletTAHOE2003
ChevroletTRAILBLAZER2003
GMCENVOY2003
GMCSIERRA2003
GMCYUKON2003
IsuzuASCENDER2003
OldsmobileBRAVADA2003

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.

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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.