1999 GMC Sonoma Owner's Manual - Page 103

yellowblue Mirrors Inside Day/Night Rearview Mirror Power Remote Control Mirror The control is located on the driver's door armrest. Pull the tab under the mirror toward you to reduce glare from headlamps behind you after dark. Push the tab away from you for normal daytime operation. Move the upper control to the left or right to choose the mirror, then press the arrows on the control pad to adjust the mirror. Outside Manual Adjust Mirror Adjust your outside mirrors so you can just see the side of your vehicle. You can fold them before entering a car wash. Pull the mirrors in toward the vehicle. Push the mirrors back out when finished. 2-45