Free regular cheese burger with purchase of same. Redemption Instructions Log in to view the redemption instructions for this offer. Participating locations include: SONIC 16270 Fort St Southgate, MI 48195 Phone: 734-283-8880 Map SONIC 7725 N Wayne Rd Westland, MI 48185 Phone: 764-466-3330 Map SONIC 815 N Telegraph Rd Monroe, MI 48162 Phone: 734-241-5662 Map Sharing Options Share Offer Copy Link