1994 GMC Suburban Owner's Manual - Page 296

Bulb Replacement Before you replace any bulbs, be sure that all the lights are off and the engine isn't running. Sealed Beam Headlights 1. Remove the four screws from the headlight retainer. 2 . Pull the headlight out and remove the retainer. 3. Unplug and remove the headlight. 4. Plug in the new headlight and put it in place. 5 . Install the retainer to the headlight and tighten the screws. Halogen Bulbs 6-50