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 705 (PERSONALIZATION SYSTEM)DESCRIPTION & OPERATIONDRIVER PERSONALIZATIONAUTOMATIC DOOR LOCKS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Automatic Door Locks
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Automatic Door Locks
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. 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 automatic door locks feature:
- The SIC displays AUTOMATIC DOOR LOCKS: ENABLED or DISABLED.
- Press the arrow button on the SIC in order to select the desired choice.
- Press the MENU button in order to the next option.
- The SIC displays AUTOMATIC DOOR UNLOCK: DRIVER, ALL, or DISABLED.
- Press the MENU button in order to advance to the next button.
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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.