The trunk light switch on a Pontiac Sun Fire is typically in the latch assembly. This is usually inside the trunk and under the carpet.
You must first remove the trunk door facia. (This is the part with the "Pontiac" lights in it.) Then you can get to the bulb to replace it.
One that fits.......
you go to the dealership
in the trunk or under your back seat
it seem to be the trunk plastic is broke and I have brought the the part and wont to fix it
Old age and vibration, I'd guess. All of mine were out too. The PONTIAC on the trunk lid wouldn't light up. I replaced the bulbs and now it does. For what it's worth, it's Way Cool when the PONTIAC does light up!
beside the drivers seat...on the floor
It's should be on the left hinge. (Small plastic end piece)
Trunk light switch is part of the trunk light socket assembly...
If you're asking about the piece that lights up PONTIAC across the trunk lid, it comes off from inside the trunk. There are half a dozen or so, screws. I had to pull mine off to get at those lamps that make the PONTIAC logo light up. Normally, you can get at those lamps, but mine were stuck in there pretty tight.
open trunk lid and locate the trunk light switch.push switch to see if light goes off. if light does not go off, replace switch. if light does go off, adjust switch to where trunk lid operates switch when trunk is closed
I'm guessing that you're referring to the lamps that light up the PONTIAC name across the center of the trunk lid. You access those lamps from the inside of the trunk lid IE: the back of the PONTIAC name. Mine were pretty stuck in place, so I ended up removing that entire rear light assembly. It comes out with about 6 screws. That gives you more access to the connectors.