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 MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 730 (COOLING SYSTEM)THERMOSTAT REPLACEMENT
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Thermostat Replacement
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Thermostat Replacement
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
- Drain the engine coolant (see COOLANT CHECK ).
- Remove the thermostat cover (A), then remove the thermostat (B).
- Install the new rubber seal (C) on the thermostat, then install the thermostat with the pin (D) up, and install the thermostat cover.
- Refill the radiator with engine coolant, then bleed the air from the cooling system (see step 9 on page 10-8).
- Clean up any spilled engine coolant.
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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.