IMPORTANT INFORMATION: OnStar services require vehicle electrical system (including battery), wireless service, and GPS satellite signals to be available and operating for features to function properly. Subscription Service Agreement required. The U.S. Federal Communications Commission (FCC) ruled that wireless carriers will no longer be required to support the analog wireless network beginning in 2008. As of January 1, 2008, OnStar plans to offer service only through equipment that operates on the digital network, which may require the purchase of a system upgrade for eligible vehicles. Click for Frequently Asked Questions, Terms and Conditions, and Privacy Statement. For system limitations and details, call 1.888.4.ONSTAR (1.888.466.7827), or click Terms and Conditions. Additional information can be found in the OnStar Owner's Guide. Most of the savings portrayed through the calculator are based on information provided by OnStar Vehicle Diagnostics email reports. Gas, oil, and certain insurance savings are applicable only to OnStar Vehicle Diagnostics-equipped vehicles. For details, call 1.888.4.ONSTAR (1.888.466.7827).

*Savings based on combined EPA estimates of $.56/gallon savings on a 24-average-mpg vehicle driving 12,000 miles/year. Numbers calculated based on figures at fueleconomy.gov.

†Available on 2004 MY & newer GM models equipped with the GM Oil Life System. Diagnostics not available on Pontiac Vibe, Saab 9-3 and 9-5. Diagnostic services vary on Cadillac SRX V8, Saturn VUE, Ion and L-Series, Chevy Silverado diesel and GMC Sierra diesel. For details, call 1.888.4.ONSTAR (1.888.466.7827) or press your blue button.

§Oil-life savings based on changing oil every 7,000 miles versus every 3,000 miles, assuming 12,000 miles per year of driving and an average oil-change cost of $30. Actual oil-drain intervals will vary and may or may not exceed 7,000 miles.

**OnStar Hands-Free Calling requires a Hands-Free Calling–enabled vehicle, existing OnStar service contract, prepaid minute package, or enrollment in a shared minutes plan. Not available in certain markets. Calls may be made to the U.S. and Canada only.

††Remote Door Unlock success varies with conditions. Not available on Saab 9-3 and 9-5 models.