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.
2000 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Power Door Lock DTCS
POWER DOOR LOCK DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B3069 | Door Key Switch Unlock Circuit Low |
| B3127 | Left Front Door Unlock Circuit Low |
| B3128 | Left Front Door Unlock Circuit High |
| B3132 | All Doors Unlock Circuit Low |
| B3133 | All Doors Unlock Circuit High |
| B3137 | All Doors Lock Circuit Low |
| B3138 | All Doors Lock Circuit High |
| B3272 | Door Lock/Unlock Switch Circuit Low |
Factory Service Tools
Use the Manual With the Right Hardware
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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.