Here’s a feature outline for a tool or script that looks at the installation status of — commonly associated with the Los Santos Tuners and The Contract DLCs on PC (Steam, Epic, or Rockstar Launcher).
Added the Salvage Yard business, illicit tow truck missions, "Drift Tuning" for select vehicles, and the return of Yusuf Amir from GTA IV. How to Install the GTA 5 Update (Step-by-Step)