OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. To change the OnStar PIN, call OnStar and provide the Advisor with the current number.
See also:
How to Add Coolant to the CoolantRecovery Tank
If you have not found a problem yet, but the
coolant level is not at the FULL COLD mark, add
a 50/50 mixture of clean, drinkable water and
DEX-COOL® engine coolant at the coolant
recovery tank.
...
Setting the Tone(Bass/Midrange/Treble)
AUDIO: Push and release the AUDIO knob until
BASS, MID (midrange) (without Bose®), or TREB
(treble) displays. Turn the knob to increase or to
decrease the tone. The display shows the bass,
midran ...
Online Owner Center
Buick Owner Center (U.S.) www.buickownercenter.com
Information and services customized for your specific vehicle — all in one convenient place.
► Digital owner manual, warranty information, ...