See also:

OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. To ch ...

Airbag System Check
The airbag system does not need regularly scheduled maintenance or replacement. Make sure the airbag readiness light is working. See Airbag Readiness Light on page 5‑20 for more information. No ...

Four-Wheel Drive
Transfer Case When to Check Lubricant Refer to Maintenance Schedule on page 11‑3 to determine when to check the lubricant. How to Check Lubricant Electric Shift Transfer Case A. Fill Plug ...