Doors Lock With Transmitter, But Horn Does Not Sound

Check horn enable/disable with scan tool. If horn is enabled, press horn button. If horn does not sound, check horns, horn relay and wiring. See STEERING COLUMN SWITCHES article. Replace components or repair wiring as necessary. Check for a voltage pulse at horn relay terminal while pressing transmitter LOCK button. If voltage pulse is not present, replace BCM. See REMOVAL & INSTALLATION  .