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Home >> Buick >> 1991 >> Reatta 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Pcm/BCM >> Output Display Codes >> BCM Output Parameters >> BO13

BCM Output Parameters: BO13

Twilight display (Riviera) is LO when relay is energized. Reatta) Park lights display is LO when lights are on.