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 MANUALSCHEVROLET2002SILVERADO 1500 HD, RWDREPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXHVAC, AUTOMATIC DTCS
2002 Chevrolet Silverado 1500 HD, RWD
HVAC, Automatic DTCS
2002 Chevrolet Silverado 1500 HD, RWDSECTION HVAC, Automatic DTCS
AUTOMATIC HVAC DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B0159 | Signal Circuit Voltage Out Of Range |
| DTC B0164 | Signal Circuit Voltage Out Of Range |
| DTC B0174 | Signal Circuit Voltage Out Of Range |
| DTC B0179 | Signal Circuit Voltage Out Of Range |
| DTC B0184 | Signal Circuit Voltage Out Of Range |
| DTC B0229 | Recirculation Actuators Travel Range |
| DTC B0248 | Mode Door Position Error |
| DTC B0268 | Recirculation Door Position Error |
| DTC B0408 | Air Mix Door Position Error |
| DTC B0414 | Air Temperature Door/Actuator |
| DTC B3761 | Mode Door/Actuator 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.