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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXINSTRUMENT PANEL DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Instrument Panel DTCS
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Instrument Panel DTCS
INSTRUMENT PANEL DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B0540 | Speedometer Circuit |
| DTC B0560 | Tachometer Circuit |
| DTC B1372 | Device Ignition 1 (ON and START) Circuit Low |
| DTC B2961 | Key In Ignition Circuit Malfunction |
| DTC P0461 | Fuel Level Sensor Performance |
| DTC P0462 | Fuel Level Sensor Circuit Low Voltage |
| DTC P0463 | Fuel Level Sensor Circuit High Voltage |
| DTC P0522 | Engine Oil Pressure (EOP) Switch Circuit Low Voltage |
| DTC P0523 | Engine Oil Pressure (EOP) Sensor Circuit High Voltage |
| DTC P0608 | Vehicle Speed Output Circuit |
| DTC P0654 | Engine Speed Output Circuit |
RENDER: 1.0x
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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.