Service
Your dealer knows your vehicle best and wants you to be happy with it. We hope you will go to your dealer for all your service needs. You will get genuine GM parts and GM-trained and supported service people.
We hope you will want to keep your GM vehicle all GM. Genuine GM parts have one of these marks:

See also:
Customer Assistance Offices
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 — Customer Assis ...
Service Only Mode
This power mode is available for service and diagnostics, and to verify the proper
operation of the malfunction indicator lamp as may be required for emission inspection
purposes. With the vehicle ...
Engine Drive Belt Routing
4.2L V6 Engine
5.3L V8 Engine ...
