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 MANUALSCHEVROLET2011HHR L4-2.2LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTCOOLING SYSTEMRADIATOR CAPTESTING AND INSPECTION
2011 Chevrolet HHR L4-2.2L
Radiator Cap: Testing and Inspection
2011 Chevrolet HHR L4-2.2LSECTION Testing and Inspection
Pressure Cap Testing
Special Tools
* J 24460-01 Cooling System Pressure Tester
* J 42401 Radiator Cap/Surge Tank Test Adapter
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.
1. Remove the pressure cap.
2. Wash the pressure cap sealing surface with water.
Note: Lubricate J-42401 and pressure cap o-rings with coolant and press cap to seat o-ring on J-42401 before turning to engage threads.
3. Use J 24460-01 (1) with J 42401 (2) in order to test the radiator cap.
4. Test the pressure cap for the following conditions:
* Pressure the release when J 24460-01 exceeds the pressure rating of the pressure cap.
* Maintain the rated pressure for at least 10 seconds.
Note the rate of pressure loss.
5. Replace the pressure cap under the following conditions:
* The pressure cap does not release the pressure which exceeds the rated pressure of the cap.
* The pressure cap does not hold the rated pressure.
RENDER: 1.0x
NO RELATED
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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.