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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1772 (KEYLESS ENTRY SYSTEM AND REMOTE FUNCTIONS)DESCRIPTION AND OPERATIONKEYLESS ENTRY SYSTEM DESCRIPTION AND OPERATIONLOCK ALL DOORS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Lock All Doors
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Lock All Doors
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Press the LOCK button in order to perform the following functions:
- Lock all of the doors.
- Illuminate the interior lamps for 2 seconds after all doors are closed.
- Flash thedaytime running lamps(if selected ON in personalization).
- Chirp the horn if the lock button is pressed a second time within 5 seconds (if selected ON in personalization).
- Arm the content theft deterrent (CTD) system.
- Sound the chime 3 times if any door is open when the lock button is pressed (delayed locking).
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.