2002 Malibu brake lights won't work

Check wiring harness may be broken somewhere or check relays and fuses.

You only need to change the tail light fuse if it is blown. If you haven't checked it already, do that. Those stop/tail bulbs are 2 filament bulbs. One filament is for brake lights, and other filament is for the tail lights. So it is possible to have brake lights and no tails, if the filaments for the tail lights are burned out. But of course, it is unlikely that all the tail lights would be out and all the brake lights still work.

You may need a voltmeter to help solve the problem. It could be a problem in the headlight switch (a problem with the park light function), but is more likely a problem with the Lighting Control Module- or the Body Control Module-whichever your car is equipped with. GM first came out with the LCM, and a year or two later came out with the BCM. Both are mini-computers to control lighting and cabin functions. You would have to use a voltmeter and check things like power in and power out at the BCM of the park lights. You would thus need a wiring diagram to go along with the voltmeter. Those modules are located up under the dash-you can use google to see pictures of them, and maybe find locations.

Have you checked the brake light switch by the brake pedal?

Check the brake fuse in your dash's fusebox. Since the turns work, you know the bulbs are good, unless your Neon has separate brake lights. If the fuse is good, bulbs are good, then check for power at the brake light switch on the upper portion of the brake pedal. Should have 12 volts there all the time. Use a testlight or voltmeter to check. Good luck.

have you checked the circuit board that the bulbs plug into?

the socket (or board) that the bulbs are on are known to go bad. its actually a common repair. the lights coming on when vehicle is running is just a parking light not the brake light. you either installed the wrong bulb(needs to be a double filament) or the board is no good. Good luck

I had this problem, and to be honest, it happened to the left side about a week later...it's the board that the bulbs plug into...it's a very common problem with this model. So popular that you can normally get the socket board off the shelf at a parts store! it's extremely simple to replace, and I replaced all the bulbs at the same time!

sounds like a faulty underhood fuseblock..have seen lighting issues with these components

you have a wiring problem, my suggestion is to have a dealer look at it....

ok disreguard my other answer, you have ot remove the positive battery cable when pluggin in the new circuit board, or it will cause a default in the computer system, so remove the positive battery cable and plug the circuit board back in, you should not have a problem then.