Envoy 4WD V8-5.3L VIN M (2005)
11. Disconnect the following electrical connectors:
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Evaporative emission (EVAP) purge solenoid (1)
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Knock sensor (KS) (2)
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Manifold absolute pressure (MAP) sensor (3)
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Main coil (5)
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Fuel injectors (4)
12. Remove the electrical harness clips from the fuel rail.
13. Remove the KS harness electrical connector from the intake manifold.
14. Remove the positive crankcase ventilation (PCV) hose.