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 640 (PERSONALIZATION SYSTEM)DESCRIPTION AND OPERATIONVEHICLE PERSONALIZATIONPROGRAMMING FEATURES WITH THE TECH 2REMOTE LOCK VERIFICATION MODE
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Remote Lock Verification Mode
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Remote Lock Verification Mode
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Continue with the following steps in order to program the Remote Lock Verification Mode:
- Select Set Options.
- Select F3 for Remote Lock Verification Mode.
- Highlight the desired mode for the following choices:
- No Lock Verification
- Horn Only
- DRL Only
- DRL and Horn
- Press the ENTER button to turn the mode ON or OFF. (You must turn the current mode OFF before you can turn another one ON.)
- Select Save Options.
- Exit the menu.
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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.