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:
Traction Control System (TCS)
The vehicle has a Traction Control System (TCS) that limits wheel spin. On a
front-wheel-drive vehicle, the system operates if it senses that one or both of
the front wheels are spinning or beginn ...
Steering
Power Steering
If you lose power steering assist because the
engine stops or the system is not functioning,
you can steer but it will take much more effort.
Steering Tips
It is important to take ...
Introduction
GENERAL MOTORS, GM, the GM Emblem, BUICK, the
BUICK Emblem, and the name LUCERNE are
registered trademarks of General Motors Corporation.
This manual describes features that may or may not be ...