Envoy 2WD V8-5.3L VIN M (2005)
6. Disconnect the electrical connector (1) from the mass air flow (MAF) intake air temperature (IAT) sensor.
7. Remove the harness clips from the fuel rail.
8. Disconnect the following electrical connectors:
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Main coil (1)
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Electronic throttle control (ETC) (2)
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Fuel injectors (3)