See also:

OnStar®
For vehicles with an active OnStar subscription, OnStar uses several innovative technologies and live Advisors to provide a wide range of safety, security, navigation, diagnostics, and calling servi ...

If the Off Indicator Is Lit for an Adult-Size Occupant
If a person of adult size is sitting in the front outboard passenger seat, but the off indicator is lit, it could be because that person is not sitting properly in the seat. Use the following st ...

Traction Control System (TCS)
The vehicle may have a Traction Control System (TCS) that limits wheel slip. The system operates if it senses that one or both of the front wheels are slipping or beginning to lose traction. When this ...