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
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and an
Advisor can run a check.
See also:
Maintenance Record
After the scheduled services are performed, record the date, odometer
reading, who performed the service, and the
type of services performed in the boxes provided. Retain all maintenance
receipt ...
Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the
right and the left speakers, push and release the
AUDIO knob until BAL (balance) displays.
Turn the knob to move the sound toward the right
or the left s ...
Customer Assistance for Text Telephone (TTY) Users
To assist customers who are deaf, hard of hearing, or speech-impaired and who
use Text Telephones (TTYs), Buick has TTY equipment available at its Customer Assistance
Center. Any TTY user can comm ...