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.
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HOMESERVICE MANUALSCHEVROLET1999SUBURBAN C2500, 6.5 FREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXTRANSFER CASE DTCS
1999 Chevrolet Suburban C2500, 6.5 F
Transfer Case DTCS
1999 Chevrolet Suburban C2500, 6.5 FSECTION Transfer Case DTCS
TRANSFER CASE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B0768 | Service Indicator Circuit High |
| B2725 | Select Switch Circuit Malfunction |
| C0300 | Rear Speed Sensor Malfunction |
| C0305 | Front Speed Sensor Malfunction |
| C0308 | Motor A/B Circuit Low |
| C0309 | Motor A/B Circuit High |
| C0310 | Motor A/B Circuit Open |
| C0315 | Motor Ground Circuit Open |
| C0323 | Transfer Case Lock Circuit Low |
| C0324 | Transfer Case Lock Circuit High |
| C0327 | Encoder Circuit Malfunction |
| C0357 | Park/Neutral Switch Circuit High |
| C0362 | 4L Discrete Output Circuit High |
| C0367 | Front Axle Control Circuit High |
| C0374 | General System Malfunction |
| C0376 | Front/Rear Drive Shaft Speed Mismatch |
| C0387 | Unable To Perform Shift |
| C0550 | ECU Malfunction |
| C0611 | VIN Information Error |
RENDER: 1.0x
NO RELATED
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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.