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Old 01-17-2016, 09:45 AM   #6 (permalink)
ksa8907
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I have the same type of issue with my cts. If the oil level drops there is inadequate oil pressure to fully engage the cam phasers. I haven't had any codes but when the engine starts pinging i know i went too long without checking the oil.

It will start to do this at just 1/2 to 1 quart low, 6qt engine.
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