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.
Replace and Program Control Module
To program a replacement control module, perform the following procedure:
- Install EL-49642 SPS programming support tool.
- Access the Service Programming System (SPS) and follow the on-screen instructions.NOTE:
The next step will copy the 1 digit rear differential clutch service calibration value from the old module and store it in the computer's hard drive. After completing the step, the Rear Differential Clutch Control Module can now be removed and replaced.
- On the SPS Supported Controllers screen, select RDCM Rear Differential Clutch Control Module- Prepare the Control Module for Removal and follow the on-screen instructions.NOTE:
The Rear Differential Clutch Control Module can now be removed and replaced.
- On the SPS Supported Controllers screen, select RDCM Rear Differential Clutch Control Module- Programming and follow the on-screen instructions.
- On the SPS Supported Controllers screen, select RDCM Rear Differential Clutch Control Module- Setup and Configuration and follow the on-screen instructions.
- At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
- Perform the Rear Differential Clutch Classification Calibration Procedure. Refer to Rear Differential Clutch Control Module Calibration .
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.
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