See also:

Storing Memory Positions
To save into memory: 1. Adjust the driver seat, including the seatback recliner and lumbar, both outside mirrors, power steering column, and the throttle and brake pedals. See Power Mirrors  ...

Maintenance When Trailer Towing
The vehicle needs service more often when pulling a trailer. See the Maintenance Schedule for more information. Things that are especially important in trailer operation are automatic transmission ...

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 ...