The GMC Jimmy headlight assembly is a composite headlight with a removable bulb for easy replacement. Buy a 9006 headlight bulb for your Jimmy from an auto-parts retailer and replace it in minutes. The Jimmy's headlights are accessible from within the engine compartment, providing easier access for you to replace the bulbs yourself. Change the bulbs in pairs to avoid having to repeat the process if the other bulb fails shortly thereafter.
Park the Jimmy and turn off the ignition and any accessories. Open the hood.
Pull up on the black retaining clips on each side of the top of the headlight assembly. Slide the assembly forward out of the front of the truck.
Squeeze the locking tab and pull the electrical connection apart to disconnect the wiring harness. Remove the assembly from the truck. Grab the back of the bulb socket and turn it counterclockwise to remove it.
Insert the new bulb into the Jimmy's headlight and turn it clockwise. Insert the headlight assembly into the truck and push the wiring harness connection together. Push the retaining clips straight down to secure the headlight.
Repeat the process on the second light. Close the hood.
