Running a FiveM server with a lot of vehicle packs means constantly fighting carcols ID conflicts. Every time you add a new car, you risk breaking the lights or sirens on an existing one — because GTA V only allows 255 unique siren IDs, and most vehicle packs don't coordinate their numbering. Carcols Fixer is the only automated tool built specifically to solve this. It scans every resource on your server, finds every carcols.meta and carvariations.meta file, detects duplicate siren IDs, light IDs, and modkit IDs, and rewrites the conflicting files with clean unique values — all in one run.