As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE MACH WARNING, LANDING GEAR WARNING HORN, AND FIRE WARNING BELLS ACTIVATED ON CLIMBOUT FROM LAS AT APPROXIMATELY 25,000 FEET. THE ASSOCIATED CIRCUIT BREAKERS WERE PULLED AND THE WARNINGS SILENCED. THE AIRCRAFT WAS DIVERTED TO DEN WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE AURAL WARNING MODULE AT FAULT. THE AURAL WARNING MODULE WAS REMOVED AND REPLACED IAW MM 31-51-00 AND OPERATIONAL CHECKS WERE GOOD.