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 51 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 2.4L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSENGINE CONTROL MODULE REPLACEMENTREMOVAL PROCEDURE
2008 Chevrolet HHR LT, 2.4 P, Automatic
Removal Procedure
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Removal Procedure
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
- Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
- Remove the engine control module cover.
- Disconnect the body wiring harness electrical connector (1) from the ECM.
- Disconnect the engine wiring harness electrical connector (1) from the ECM.
RENDER: 1.0x
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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.