Exterior lamps off reminder, Headlamp high/low-beam changer, Flash-to-pass – CHEVROLET 2012 Silverado User Manual
Page 219: Daytime running lamps (drl), Exterior lamps off, Reminder -3, Headlamp high/low-beam, Changer -3, Flash-to-pass -3 daytime running, Lamps (drl) -3
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