1997 GMC Sonoma Owner's Manual - Page 279

Underhood Lamp 1. Disconnect the electrical connectorfrom the underhood lamp assembly. Vanity Mirror Lamps 1. Insert the blade of a small screwdriverinto the center slot at the bottom of the lens. 2. Remove the screws. 3. Disconnect the ground wire. 2. Gently pry the screwdriver down in order to lift out the lens. 4. Remove the lamp assembly from the hood. 5 . Install the new bulb. 3. Pry out the bulb. 4. Press the new bulb into place. 5. Slide the side tabs of the lens under the side of the vanity assembly frame. 6. Rotate the lens downward. 6. Replace the assembly. Install and tighten the screws 7. Connect the ground wire. 8. Connect the electrical connector to the lamp assembly. 7. Snap the lens into the frame.