Diagnostics

OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...

Transferring Service

Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, ...

See also:

Releasing locking wheel nuts
1. Insert the wheel nut adapter into the locking wheel nut, ensuring that it is fully engaged. 2. Locate the wheel brace over the adapter and unscrew the wheel nut half a turn counter clockwise. ...

Daytime running lamps
Daytime running lamps in Canada The daytime running lamps function is required by law in Canada. It cannot therefore be deactivated. Turn the light switch to or . With the engine running: d ...

Transfer case
This section is only valid for vehicles with 4- wheel drive (4MATIC). Power is always transmitted to both axles. Performance tests may only be carried out on a 2-axle dynamometer. The brake sy ...