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Home >> Buick >> 1990 >> Reatta 2D Convertible, 4T60/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - ECM >> Manual Operation Of Service Mode >> Notes

Manual Operation Of Service Mode: Notes

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.