1998 GMC Savana Van Owner's Manual - Page 117

Mirrors Inside Daymight Rearview Mirror Pull the tab under the mirrortoward you to reduce glare from headlampsbehind you after dark. Push the tab away from you to restore mirror to original position. Outside Mirrors Adjust your outside mirrorsso you can just see the side of your vehicle, and have aclear view of objects behind you. Some mirrors can be folded in to enter narrow doorways. Electric Outside Rearview Mirrors (Option) If you have electric mirrors, they can be adjusted to point where you want from inside the vehicle. Then, adjust the mirror angle pressing the outer by arrows on the switch until the mirror is adjusted where you want it. 2-45