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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 94 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> Exhaust Aftertreatment Fuel Injector Diagnosis >> Circuit/System Description

Circuit/System Description

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The Q67 Exhaust Aftertreatment Fuel Injector is located on the passenger side frame rail. Fuel is supplied to the Q67 Exhaust Aftertreatment Fuel Injector from the fuel pump. An outlet tube is connected between the Q67 Exhaust Aftertreatment Fuel Injector outlet and the exhaust pipe. When the engine control module (ECM) commands the injector ON fuel is sprayed directly into the exhaust system. The fuel ignites in the exhaust in the DOC and produces the heat required for the exhaust aftertreatment regeneration.

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