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 off, and the brake pedal not applied, pressing and holding the button for more than five seconds will place the vehicle in Service Only Mode. The instruments and audio systems will operate as they do in ON/RUN, but the vehicle will not be able to be driven. The engine will not start in Service Only Mode. Push the button again to turn the vehicle off.
See also:
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 ...
System stays in background
While I only got to drive the 2012 LaCrosse for a little over an hour, I was
impressed at how utterly unimpressive the eAssist was.
Everything works in the background. There's no electric motor wh ...
Key and Lock Messages
REPLACE BATTERY IN REMOTE KEY
This message displays when the battery in the Remote Keyless Entry (RKE) transmitter needs to be replaced. ...