How do you take apart the headlight assembly in a 2000 GMC Jimmy?
== == This also applies to the 2001 GMC Jimmy.
The headlight assembly is held in place as one entire unit.
In between the battery and the headlight assembly unit are two
tabs that when pulled upward (by hand) will release the housing
from the vehicle. (VERY EASY once you know).
The headlight assembly is now held to the vehicle ONLY by wires,
so don't let it drop and break. It's now just a matter of bulb
replacement from the backside of the headlight assembly. Do this by
turning the bulb in it's socket until the little catches line up
with the open slots and poll the light bulb out. Do NOT touch the
glass portion of the new bulb you are installing if it is a halogen
bulb. Doing so will severely shorten the life of the bulb since
contaminants on your hands cause the bulb to quickly overheat and
Once the bulb is changed and plugged back into the wires, put
the headlight assembly back in place by aligning it and poke the
two plastic pegs on the back of the headlight assembly into the two
square holes in the front of the vehicle. Now slide the two tabs
you originally pulled up to release the headlight assembly, back
down into place making sure the "slots" at the bottom of sliding
tabs catch the square plastic pegs on the back of the headlight
Do NOT pound the sliding tabs back down. Doing so will break the
square pegs off of the back of the headlight assembly and pounding
is not necessary if you have them properly in the square holes and
all of the way in. Thank you to whoever first wrote this answer and
to WIKI for making it available.