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 MANUALSCHEVROLET1999SUBURBAN C2500, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 46 (COMPUTER RELEARN PROCEDURES)RELEARN PROCEDURES (CARS)SATURNPASSLOCK(TM) ANTI-THEFT AUTO LEARN METHOD
1999 Chevrolet Suburban C2500, 6.5 F
Passlock(TM) Anti-Theft Auto Learn Method
1999 Chevrolet Suburban C2500, 6.5 FSECTION Passlock(TM) Anti-Theft Auto Learn Method
WARNING: This page does not describe the selected car, but rather 67 other vehicles, including the 2000 Saturn SW2, 2000 Saturn SL2, 2000 Saturn SL1, 2000 Saturn SL, and 2000 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
- Check BCM and PCM for existing codes. If codes exist, repair and proceed to next step. If no codes exist, go to next step.
- Turn ignition switch to RUN position. Momentarily rotate ignition to START position. DO NOT start vehicle. Wait for 10 minutes. When security light changes from flashing or on to off, turn ignition to OFF position. Perform this process 3 times. After the third time, vehicle should start on next ignition cycle.
NOTE:
If ignition is turned off before security light changes state, relearn procedure must be restarted.
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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.