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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1099 (KEYLESS ENTRY SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B3106: KEYLESS ENTRY DATA LINK PARITY ERRORCONDITIONS FOR CLEARING THE DTC
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Conditions for Clearing the DTC
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- A current DTC will clear when the fault is no longer present and the ignition switch is cycled.
- A history DTC will clear after 100 consecutive ignition cycles without a fault present.
- A scan tool may be used to clear history and current DTC(s).
DTC B3106
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Keyless Entry Schematics | |||
| 1 | Did you perform the Keyless Entry Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Remote Keyless Entry |
| 2 | Does the scan tool display DTC B1003, B3102 or B3103? | Go to Diagnostic Trouble Code (DTC) List | Go to Step 3 |
| 3 |
IMPORTANT:
Perform the keyless entry transmitter programming procedure when replacing the remote control door lock receiver (RCDLR). Replace the RCDLR. Refer to Remote Control Door Lock Receiver Replacement .Did you complete the replacement? |
System OK | - |
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.