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 MANUALSCHEVROLET2000S10/T10 P/U 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATIONCIRCUIT DESCRIPTIONPASSLOCK SYSTEM
2000 Chevrolet S10/T10 P/U 2WD V6-4.3L VIN W
PASSLock System
2000 Chevrolet S10/T10 P/U 2WD V6-4.3L VIN WSECTION PASSLock System
The Passlock(TM) theft deterrent system is designed to prevent vehicle operation if the correct ignition key is not used to start the vehicle. The ignition key will allow the lock cylinder to turn, which allows the Passlock(TM) sensor (located inside of the ignition switch assembly) to send a code to the BCM. If the BCM receives the correct code from the Passlock(TM) sensor the BCM will send a password to the Vehicle Control Module (VCM) or the Powertrain Control Module (PCM) which will allow the vehicle to start.
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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.