Download Removal Procedure Important: The intake manifold, throttle body, fuel rail, and injectors may be removed as an assembly. If not servicing the individual components, remove the manifold as a complete assembly. 1. Remove the throttle body. Refer to Throttle Body Assembly Replacement in Engine Controls – 4.8L, 5.3L, and 6.0L. 2. Remove the fuel injectors. Refer to Fuel Injector Replacement in Engine Controls – 4.8L, 5.3L, and 6.0L. 3. Disconnect the following electrical connectors: – Manifold absolute pressure (MAP) sensor (1) – Knock sensor (2) – Exhaust gas recirculation (EGR) valve, if equipped. 4. Remove the knock sensor harness electrical connector from the intake manifold. 5. Set the electrical harness aside. 6. If equipped, remove the following EGR pipe bolts: – Intake manifold (1) – Cylinder head (2) – Exhaust manifold (3) 7. If equipped, remove the EGR pipe with valve. 8. If equipped, remove the EGR pipe gasket from the exhaust manifold.