On star

Telediagnostic

With more than two million subscribers, OnStar is the leading provider of telematics services in the United States. Telematics is the transmission of data communications between systems and devices. OnStar's in-vehicle safety, security, and information services use Global Positioning System (GPS) satellite and cellular technology to link the vehicle and driver to the OnStar Center. At the OnStar Center, advisors offer real-time, personalized help 24 hours a day, 365 days a year.

OnStar Vehicle Diagnostics is a comprehensive, automatic diagnostics systems check and report service, now available on most new GM vehicles. Once user sign up, OnStar will collect diagnostic information about some of user’s vehicle's key operating systems about every 30 days while he drive. Then he'll receive monthly reports and scheduled maintenance alerts by email.
Vehicle will call OnStar over a cellular network while user drive, without his even noticing it.

Flexfuel function

OnStar indicates that user have a FlexFuel vehicle capable of burning E85, an alternative to petroleum-based gasoline. E85 is an alcohol fuel mixture of 85% ethanol and 15% gasoline.

Oil life function

The computer-based system calculates the percentage of oil life remaining in vehicle, based on a number of different factors These include vehicle's engine type and temperature, driving conditions, air conditions

XM Satellite subscribtion

User can subscribe to XM Satellite Radio through OnStar.

Crisis assist service

The Crisis Assist service provides a quick and central point of contact for subscribers seeking emergency assistance and information during a crisis situation. In the event of a major hurricane, tornado, flood, snow storm, or other crisis, OnStar can help user stay connected to his loved ones and provide up-to-date crisis information (such as food, water, and shelter locations) and evacuation routes to get him out of harm's way. GM and OnStar are proud to provide this assistance.

Hands-Free Voice-Activated Calling

Take advantage of built-in voice-activated calling feature by adding OnStar Hands-Free Calling minutes to any of the above OnStar subscription plans. Or, link OnStar in-vehicle calling with your Verizon Wireless service plan and share minutes with The America's Choice® Plan With OnStar® 4 and get one bill from Verizon Wireless.

Turn-by-Turn Navigation

On star navigation system offers voice-guided driving directions to practically any destination at the push of a button. Try a route at no additional cost by pushing blue button or upgrade service level for unlimited Turn-by-Turn Navigation.

Other functions

This service propose other functions like stolen vehicle location assistance, remote door unlock, roadside assistance (if user need a tow, tire change or fuel, one push of OnStar button immediately connects to an Advisor who can help direct a service provider to user exact location), remote horn and lights (having trouble remembering where user parked his vehicle? Call an OnStar Advisor who can remotely sound his horn and flash his lights to help user locate his vehicle quickly), virtual advisor (use OnStar Hands-Free Calling minutes to connect with Virtual Advisor for local traffic reports, local weather reports, and stock quotes).
Handset system
OnStar with the Handset System makes a call using a numeric pad or by using voice recognition, stores numbers, records memos, downloads a phone number and more..