Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Saturn Ion Red LineFACTORY OEM SERVICE PROCEDURE
Installation Procedure
- Use the retaining tab to secure the PCM, when installing the PCM to the underhood junction block bracket.
- Connect the PCM harness connectors to the PCM.
- Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
- Program the PCM. Refer to Control Module References .
NOTE:
Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables or when charging the vehicles battery.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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