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 MANUALSCHEVROLET2001MONTE CARLO V6-3.8L VIN KREPAIR AND DIAGNOSISTESTING AND INSPECTIONPROGRAMMING AND RELEARNINGONSTAR - VCU OR VIU REPROGRAMMING
2001 Chevrolet Monte Carlo V6-3.8L VIN K
OnStar - VCU or VIU Reprogramming
2001 Chevrolet Monte Carlo V6-3.8L VIN KSECTION OnStar - VCU or VIU Reprogramming
IMPORTANT: The new OnStar component parts must be installed prior to the reconfiguration of the OnStar system.
After replacement of the vehicle communication unit (VCU) or vehicle interface unit (VIU), the OnStar system must be reprogrammed.
1. Press and hold the Answer/End Button on the OnStar Button Assembly until the System Status Light goes from solid GREEN to RED and back to GREEN again.
2. Call the OnStar Call Center at 1-888-OnStar1, select prompt 1.
3. Give the operator the Electronic Serial Number (ESN) off the new VCU or the Station ID (STID) number off the VIU.
4. Move the vehicle outside and let the vehicle run for 10 minutes.
5. Press the OnStar Call Center Call button and ask for a "Reconfiguration".
After replacement of the vehicle communication unit (VCU) or vehicle interface unit (VIU), the OnStar system must be reprogrammed.
1. Press and hold the Answer/End Button on the OnStar Button Assembly until the System Status Light goes from solid GREEN to RED and back to GREEN again.
2. Call the OnStar Call Center at 1-888-OnStar1, select prompt 1.
3. Give the operator the Electronic Serial Number (ESN) off the new VCU or the Station ID (STID) number off the VIU.
4. Move the vehicle outside and let the vehicle run for 10 minutes.
5. Press the OnStar Call Center Call button and ask for a "Reconfiguration".
RENDER: 1.0x
NO RELATED
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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.