Push the turn signal lever away from you and release, to turn the high beams on. To return to low beams, push the lever again or pull it toward you and release.

This indicator light turns on in the instrument cluster when the high-beam headlamps are on.
Exterior Lamp Controls
Flash-to-Pass#12-08-132-001A: Accessory Power Outlet and Trailer Lighting Fuse Replacement Labor Operation N1720 Fuse Replacement - (Mar 26, 2013) Lighting
Subject:Accessory Power Outlet and Trailer Lighting Fuse Replacement Labor Operation N1720Fuse ReplacementModels: 2010-2014 GM Passenger Cars and Trucks This bulletin is being revised to add the 2014 model year. Please discard CorporateBulletin Number 12-08-132-001 (Section 08 – Body and Acces ...