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.
2004 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Sensing and Diagnostic Module (SDM) Replacement and Reprogramming
WARNING: This page is about a different car, the 2012 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
If the SDM is replaced or requires reprogramming, the following procedures must be performed in the specified order:
- Setup SDM- Using a scan tool, go to Vehicle Control Systems » Computer/Integrating Systems » Module Setup » Supplemental Inflatable Restraint. Select Setup New SDM and follow the on-screen instructions.
- Setup SDM Part Number in BCM - Using a scan tool, go to Vehicle Control Systems » Computer/Integrating Systems » Module Setup » Supplemental Inflatable Restraint. Select Setup SDM Part Number in BCM and follow the on-screen instructions.
Factory Service Tools
Use the Manual With the Right Hardware
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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.