Denny's 6429 Grand Ave 6:00 AM - 1:00 AM 6:00 AM - 1:00 AM 6:00 AM - 1:00 AM 6:00 AM - 1:00 AM 6:00 AM - 12:00 AM Open 24 Hours 6:00 AM - 1:00 AM6429 Grand Ave Gurnee, IL 60031 US