Horn is stuck on my 99 Pontiac Grand Am

SOURCE: Car Horn

Try using a 12volt jumper wire directly to the horn from the car battery. also check the ground on the horn. The last thing I would do is pull the steering wheel cover. Make sure the horn is blowing first.

SOURCE: I hit my horn to

Ground wire is lose inside the steering column. Common issue with Alero's, sadly.

SOURCE: My 99 Toyota Avalon horn does not make any sound.

save yourself the hassle , buy yourself a momentary 12volt switch drill a nice clean hole on your driversside dash and re-wire your horn to it, all the screwing around you'll do to figure out why toyota makes cheesy horn contacts you could have your problem fixed..



on one side of the switch you should run a wire that is a 12volt switched +
on the other side I would run another side run a new power wire to your horn
leave your horns stock ground and just replace the HOTLINE ..

you could even go as far as installing a la cou ca racha horn to bring back that 70's Lowrider feel lol

SOURCE: No horn in '94 Jeep Grand Cherokee

go to the horn under your hood, check it for any thing wrong, then follow the power wire and follow it back to your steering wheal. this is where your problem is you just have to find out where the short is. and fix it.

tepfy

SOURCE: 2000 Pontiac Grand Prix horn sticks

THE HORN RELAY AND FUSE ARE IN THE UNDERHOOD FUSE BOX.