See also:

Setting the Power Liftgate Intermediate Mode
To change the liftgate stop position: 1. Turn the liftgate switch to either the MAX, or the ¾ mode position and power open the liftgate. 2. Stop the liftgate movement at the desired hei ...

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 ...

Additional Factors Affecting System Operation
Safety belts help keep the passenger in position on the seat during vehicle maneuvers and braking, which helps the passenger sensing system maintain the passenger airbag status. See “Safety Belts” ...