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 MANUALSCHEVROLET2025TRAILBLAZER ACTIV, 4WDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSREMOTE FUNCTIONSDIAGNOSTIC INFORMATION AND PROCEDURESDTC B3106CIRCUIT/SYSTEM VERIFICATION
2025 Chevrolet Trailblazer ACTIV, 4WD
Circuit/System Verification
2025 Chevrolet Trailblazer ACTIV, 4WDSECTION Circuit/System Verification
- With a valid and learned transmitter, press and release a button on the transmitter.
- Verify that DTC B3106 is not set.
- If DTC B3106 is set
Replace the K77 Remote Control Door Lock Receiver.
- Go to next step: If DTC B3106 is not set
- If DTC B3106 is set
- All OK.
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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.