Oil Life Information

The GM Oil Life System is an exclusive, computer-based process that calculates the percentage of oil life remaining in your vehicle, based on a number of different factors. These include:

Engine type and temperature
Driving conditions
Ambient air conditions
Specific engine characteristics

How do we predict when you'll need your next oil change?

Remember, you should continue to check the oil level regularly and be sure to reset your vehicle's Oil Life Indicator after each oil change.

See the status alerts below to better understand what oil life percentage range each symbol represents.

Status:	Diagnostic:	Action:
	Oil Life is between 21% and 100%	No maintenance needed. We will notify you when it's time to schedule a service appointment.
	Oil Life is between 11% and 20%	We recommend that you schedule a service appointment soon.
	Oil Life is between 1% and 10%	Call your GM dealer or Saturn retailer to schedule a service visit as soon as possible.
	No reading available	This information may be missing due to a communications error that prevented OnStar from retrieving data about your oil. If you have a Driver Information Center (DIC), please refer to your owner's manual on how to view your vehicle's current oil life value. If you do not have a DIC, you can rely on your vehicle's oil life warning indicator. When it is time to change your oil, the light will come on. When this happens, you have about 8% of your oil life remaining.
	Oil Life is 0%	Call your GM dealer or Saturn retailer to schedule a service visit as soon as possible.

Available on 2004 MY & newer GM models equipped with the GM Oil Life System. Diagnostics not available on Cadillac Catera, Pontiac Vibe, Saab 9-3 and 9-5 and 2008 Saturn ASTRA. 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.