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.
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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 456 (PROGRAMMING AND SETUP - ALL SYSTEMS)REPAIR INSTRUCTIONSTHEFT DETERRENT MODULE PROGRAMMING AND SETUPPROCEDURE TO SET UP A NEW THEFT DETERRENT MODULE
2008 Chevrolet HHR LT, 2.4 P, Automatic
Procedure to Set Up a New Theft Deterrent Module
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Procedure to Set Up a New Theft Deterrent Module
WARNING: This page is about a different car, the 2011 GMC Canyon and 2011 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Use this procedure only if replacing the TDM with a new replacement part. This procedure will set up the new TDM based on the vehicle region.
NOTE:
When replacing a theft deterrent module (TDM) with a new replacement part, the TDM will learn the vehicle keys immediately. The existing engine control module (ECM) must learn the new fuel continue password when the TDM is replaced. This is completed by performing the 10 Minute Re-Learn Procedure after set up.
- Connect the scan tool to the vehicle.
- Turn ON the ignition, with the engine OFF.
- With the scan tool, select Module Setup under the Theft Deterrent Module menu. Follow the scan tool on screen instructions.
- Perform the 10 Minute Re-Learn Procedure.
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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.