G5 Car Repair Questions and Answers

Car questions for the G5.


'07 Pontiac G5. 2.2L Ecotec.

Question: Check engine light codes came out as P0446(Evaporative Emission (EVAP) Vent System Performance), P0121(Throttle Position (TP) Sensor Performance) and P0102 (Mass Air Flow (MAF) Sensor Circuit Low Frequency) - mechanic cannot get the throttle body, dealer cannot get throttle body.

2007 Pontiac G5. Question: Is the answer free. We have signal lights but it doesn't make the sound of the light.

Answer: I am not really sure what you are asking. If you mean that the turn signal lights turn on but do not blink, then you may have a problem with the Body Control Module (BCM).

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How Things Work

Air Bag (SIR) System Function and Operation

The Supplemental Inflatable Restraint (SIR) system supplements the protection offered by the driver and front passenger seat belts. The SIR system deploys an air bag from the center of the steering wheel and from the right side of the instrument panel. The knee bolsters and the steering column absorb crash energy. The driver and passenger knee bolsters are below the instrument panel.

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Common Engine Codes

Code P0171 Fuel Trim Error

The powertrain control module (PCM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy and emission control. Fuel delivery is controlled differently during Open and Closed Loop. During Open Loop, the PCM determines fuel delivery based on sensor signals, without oxygen sensor (O2S) input.

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