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.
Set Up a Theft Deterrent Module (TDM) Using New Keys
Use this procedure only if replacing the TDM using new vehicle keys.
The TDM must be replaced prior to beginning this procedure.
- Connect a scan tool to the vehicle.
- With a new, unlearned, vehicle key, turn ON the ignition, with the engine OFF.
- With a scan tool, select Theft Deterrent Module in the Vehicle Control Systems Module Setup data list.
- Select Step 1.
- Select Use New Keys.
- Follow the scan tool on-screen instructions.
Programming Immobilizer System Components
After the TDM has been set up using the above procedure, the ECM and TDM must learn the new fuel continue password. To learn the new password, perform the Immobilizer System Component Programming procedure.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.