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
During the procedures listed below, critical data is retrieved from vehicle components and stored in the scan tool computer's hard drive. This data is needed during the programming and setup sequences. Ensure the same scan tool is used and capable of reading, storing, and writing the vehicle's system data.
If communication with the OLD power steering control module cannot be established, then replace the entire steering gear as an assembly. Do NOT proceed with replacement of just the power steering assist motor. Refer to Electric Dual Pinion Rack and Pinion Steering Gear Replacement (LTG With AWD) , or Electric Dual Pinion Rack and Pinion Steering Gear Replacement (LCV With AWD) , or Electric Dual Pinion Rack and Pinion Steering Gear Replacement (LCV With FWD)
To program a replacement control module, perform the following procedure:
When replacing the entire steering gear, follow the steps for Reprogram Control Module.
- On the SPS Supported Controllers screen, select K43 Power Steering Control Module - Prepare Control Module for Removal and follow the on-screen instructions.
- Replace the Power Steering Control Module. Refer to Control Module References .
- On the SPS Supported Controllers screen, select K43 Power Steering Control Module - Programming and follow the on-screen instructions.
- Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.
- Ignition ON.
- On the SPS Supported Controllers screen, select K43 Power Steering 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.
Step 1 copies the worm gear wear counter data from the power steering control module PRIOR to the module's removal and stores it on the scan tool computer's hard drive.
AFTER completing step 1, the power steering control module can now be removed and replaced.
The next two steps will transfer the vehicle's critical data, including the worm gear wear counter data saved in step 1, back to the vehicle components.
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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.