Workshop Repair and Service Manuals GMC SIERRA
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Interior Mirrors

Automatic Dimming Rearview Mirror      The vehicle may have an automatic dimming inside rearview mirror. Automatic dimming reduces the glare from the headlamps of the vehicle behind you. The dimming feature comes on and the indicator light illuminates each time...
Manual Rearview Mirror      Hold the mirror in the center to move it for a clearer view of behind your vehicle. Adjust the mirror to avoid glare from the headlamps behind you. Push the tab at the bottom of the mirror forward for daytime use and pull it...