Entering "Service Mode": Notes
WARNING: This page is about a different car, the 1989 Oldsmobile Toronado, 1989 Buick Riviera, and 1989 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Operating vehicle in the "SERVICE MODE" for extended time periods (1/2 hour or longer), without the engine running, will cause battery drain, and 'possibly relate false diagnostic information and/or a no-start condition.