K 1500 Suburban 4WD V8-4.8L VIN V (2003)
6. Remove the knock sensor harness connector from the intake manifold.
7. Remove the connector position assurance (CPA) lock.
8. Disconnect the following electrical connectors from both sides of the engine:
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Main coil (2)
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Fuel injectors
9. Remove the harness clips from the fuel rail (1).
10. Reposition the engine wire harness aside.
11. Perform the following steps in order to disconnect the fuel injector electrical connectors.
11.1. Mark the connectors to their corresponding injectors to ensure correct reassembly.
11.2. Pull the connector position assurance (CPA) retainer (2) on the connector up 1 click.
11.3. Push the tab (1) on the connector in.
11.4. Disconnect the fuel injector electrical connector.
11.5. Repeat the steps for each injector electrical connector.
