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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - 8.1L - Introduction (2 Of 2)) >> Description and Operation >> Fuel System Description >> Fuel Tanks

Fuel Tanks

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The fuel tanks store the fuel supply. The primary fuel tank is located in the rear of the vehicle on the left side. On dual-tank applications, the secondary fuel tank is located in the rear of the vehicle above the spare tire. The fuel tanks are each held in place by 2 metal straps that attach to the frame. The fuel tanks are molded from high density polyethylene.