For the Mid-2005 Malibu (the boxy model, not the Classic) the headlights are part of the front light module that includes the headlights and the combination front marker/turn signal. This module is attached by two bolts on the top. These are easily seen if the top of the module is examined from above with the hood of the car open.
Remove the two bolts with a nut driver. Set the bolts and their washers aside for use in re-assembly. Lift the module slightly away from the the car body -- a few inches -- and look behind it to see where the lighting module wiring is plugged into the car's wiring harness. This socket has a retainer clip molded into it, but that is easily released. Then the wiring can be unplugged.
Take the light module to your work bench (or kitchen table). Look at the back of the module. There you will see three twist in bulb covers. Remove the cover that is over the bulb you want to replace and you have access to the bulb socket. Replace the bulb. Reverse the process to re-assemble.
You will need to take the complete headlight assembly loose or out to get to the bulb to change it.
I've got a better question, why is this question in the Chevy venture forum ?
newtest3
Remove tire & inner liner to gain access to head light assembly
Pull the complete headlight assembly out to get to the bulbs. You first have to pull the front bumper off, along with the wheel well to get to the headlight assembly.
Replace headlight bulb only when blown.
The bulbs unscrew from the back of the light assy. sometimes you have to remove it to get to the back.
On older vehicles you replace the entire headlight. On the newer vehicles you just replace the bulb unless the headlight assembly is damaged.
you will probably have to take the complete headlight assembly out to get enough room to change the bulb.
When you open the hood look above the headlight for two round plastic caps. Pull these upwards, it releases the light assembly.
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