Engine Oil Additives / Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
The Inside
Buick sells only three models now, and the Lucerne falls in the middle in
size, price and interior quality. Of the three large crossover models GM has
sold over the past couple years, the Buick En ...
Bulb Replacement
For the proper type of replacement bulbs, see Replacement Bulbs .
For any bulb-changing procedure not listed in this section, contact your dealer. ...
Interior Mirrors
Automatic Dimming Rearview Mirror
The vehicle has an automatic dimming inside rearview mirror.
Automatic dimming reduces the glare from the headlamps of the vehicle behind you.
Vehicles with OnStar ...