Service All-Wheel Drive Light

This light should come on briefly when you turn on the ignition, as a check to show you it is working.
The service all-wheel drive light comes on to indicate that there may be a problem with the drive system and service is required. Malfunctions can be indicated by the system before any problem is apparent, which may prevent serious damage to the vehicle. This system is also designed to assist your GM dealer in correctly diagnosing a malfunction.
See also:
Securing Child Restraints (Rear Seat)
When securing a child restraint in a rear seating position, study the instructions that came with the child restraint to make sure it is compatible with this vehicle.
If the child restraint has the L ...
Battery Load Management
The vehicle has Electric Power
Management (EPM) that estimates
the battery's temperature and state
of charge. It then adjusts the voltage
for best performance and extended
life of the batter ...
Customer Assistance Offices (U.S. and Canada)
Buick encourages customers to call
the toll-free number for assistance.
However, if a customer wishes to
write or e-mail Buick, the letter
should be addressed to:
United States
Buick Customer ...
