Engine Controls Schematics

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Power, Ground, MIL and DLC

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Fig 2: Engine Data Sensors - 5-Volt Reference Bussing

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Fig 3: Engine Data Sensors - Pressure, Temp and MAF/IAT

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Fig 4: Engine Data Sensors - HO2S

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Fig 5: Engine Data Sensors - APP and Throttle Body Assembly

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Fig 6: Ignition Controls - 1 of 2

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Fig 7: Ignition Controls - 2 of 2

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Fig 8: Fuel Controls

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Fig 9: CKP, CMP, Knock Sensors

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Fig 10: EVAP Controls, FTP Sensor

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Fig 11: EGR, Secondary Air Injection (AIR)

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Fig 12: Controlled/Monitored Subsystem References

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