OnStar Services

See also:

Manual Operation of Power Liftgate
To change the liftgate to manual operation, turn the mode selector switch to OFF. With the power liftgate disabled and all of the doors unlocked, the liftgate can be manually opened and clo ...

Automatic Transmission Fluid
How to Check Automatic Transmission Fluid It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehi ...

All-Wheel Drive
If your vehicle is equipped with all-wheel-drive, this is an additional system that needs lubrication. Transfer Case When to Check Lubricant It is not necessary to regularly check the transfe ...