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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - Description And Operation) >> Description And Operation >> Fuel System Description >> Primary Jet Pump

Primary Jet Pump

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The primary jet pump is located in the fuel tank fuel pump module. Fuel pump flow loss, caused by vapor expulsion in the pump inlet chamber, is diverted to the primary jet pump through a restrictive orifice located on the pump cover. The primary jet pump fills the reservoir of the fuel tank fuel pump module.

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