How do you change a fuel filter on a 1999 gmc safari? How do you change a fuel filter on a 1999 gmc safari? The fuel filter is located under the vehicle, on the driver's side, just ahead of the rear wheel. It is an inline filter and can be changed 1999 GMC Safari Replacement Fuel Filters – CARiD GMC Safari 1999, Fuel Filter by Motorcraft®. Motorcraft Fuel Filters must also withstand harsh performance testing through a series of test-to-failure endurance and materials durability tests to ensure their long lasting quality and..