- Games & Hobbies, Pontiac
- Garage Building & Repair, Pontiac - Carports - Garage Builders
- Garage Doors & Door Operating Devices, Pontiac
- Garage Doors & Gates, Pontiac - Stores & Companies - Install & Repair Services
- Garage, Door & Window Products, Pontiac
- Garment & Linen Services, Pontiac
- Gas Companies, Pontiac
- Gas Station, Pontiac - Service & Filling Station
- General Business Services, Pontiac
- General Freight Trucking, Pontiac - Motor Freight
- General Hardware Stores, Pontiac
- General Merchandise Stores, Pontiac
- General Surgeons, Pontiac - General Surgery Doctors, Physicians & Surgeons
- General Travel Agents & Agencies, Pontiac
- Generator Repair, Pontiac
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- Generator Sales & Rental, Pontiac - Contractors Supplies & Equipment
- Generators, Pontiac - Solar, Steam, Wind Power, etc
- Gift Shops, Pontiac - Gift, Novelty & Souvenir Stores
- Gifts, Cards & Stationery Stores, Pontiac
- Glass & Glass Products, Pontiac
- Glass - Auto, Float, Plate, Window & Doors, Pontiac
- Glass Furniture Tops, Pontiac
- Golf Courses, Pontiac
- Government, Pontiac
- Granite, Pontiac
- Greeting Card Stores, Pontiac
- Grills & Grilling Equipment & Supplies, Pontiac
- Grocery Stores & Supermarkets, Pontiac
- Ground Transportation, Except Passenger, Pontiac
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