Manual Operation Of Service Mode: Notes

WARNING: This page is about a different car, the 1990 Buick Riviera and 1990 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Manual operation of service mode system is to be used with the TROUBLE CODE CHARTS section of this article. Prior to using flow charts, it will be necessary to become completely familiar with the procedures in MANUAL OPERATION OF SERVICE MODE.