Really shouldn't be much to it I wouldn't think. I haven't changed one on a malibu, but most I've seen have some sort of retaining ring you turn and then remove the bulb and plug in the new one, replace the bulb and retaining ring. Some, are kinda tough to get to. Try not to touch the glass of the new bulb when you install it. This or if moisture gets in through the headlamp somehow can burn out the bulb quicker. A few parts stores like autozone also install headlight bulbs for free.