K 1500 Yukon 4WD V8-5.3L VIN Z Flex Fuel (2003)
Intake Manifold: Service and Repair
Intake Manifold Replacement
Intake Manifold Replacement
Removal Procedure
Important: The intake manifold, throttle body, fuel rail, and injectors may be removed as a complete assembly. If not servicing the individual
components, remove the manifold as a complete assembly.
1. Remove the throttle body.
2. Remove the fuel injectors.
3. Disconnect the following electrical connectors:
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The Manifold absolute pressure (MAP) sensor (1)
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The knock sensor (2)
4. Remove the knock sensor harness electrical connector from the intake manifold.
5. Set the electrical harness aside.
6. If equipped with vacuum assisted brakes, remove the vacuum brake booster hose from the rear of the intake manifold.