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 662 (ENGINE COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPRESSURE CAP TESTING
2008 Chevrolet HHR LT, 2.4 P, Automatic
Pressure Cap Testing
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Pressure Cap Testing
WARNING: This page is about a different car, the 2011 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools
- J 24460-01 Cooling System Pressure Tester
- J 42401 Radiator Cap/Surge Tank Test Adapter
- Remove the pressure cap.
- Wash the pressure cap sealing surface with water.
WARNING:
In order to help avoid being burned, do not remove the radiator cap while the engine and the radiator are hot. Scalding fluid and steam can be blown out under pressure if the cap is removed too soon.
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.