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 114 (PROGRAMMING AND SETUP - ALL SYSTEMS)REPAIR INSTRUCTIONSTHEFT DETERRENT CONTROL MODULE PROGRAMMING AND SETUP (N. AMERICA EXCEPT CANADA)SET UP A THEFT DETERRENT MODULE (TDM) USING NEW KEYSWITH SCAN TOOL
2008 Chevrolet HHR LT, 2.4 P, Automatic
With Scan Tool
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION With Scan Tool
WARNING: This page is about a different car, the 2009 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
- 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.
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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.