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 MANUALSCHEVROLET2008COBALT LS, 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESPROGRAMMING AND SETUP - ALL SYSTEMSREPAIR INSTRUCTIONSTHEFT DETERRENT CONTROL MODULE PROGRAMMING AND SETUP (CANADA)SET UP A THEFT DETERRENT MODULE (TDM) USING EXISTING KEYSPROGRAMMING IMMOBILIZER SYSTEM COMPONENTS
2008 Chevrolet Cobalt LS, 2D Coupe, Standard
Programming Immobilizer System Components
2008 Chevrolet Cobalt LS, 2D Coupe, StandardSECTION 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.
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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.