05 Yukon XL oil pressure low at idle when cold only
3 Answers
You need to check oil pressure with manual gauge and determine if in fact pressure is low. Test when cold til it warms up and note the difference in pressure
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There is the infamous oil sensor screen that plugs up.
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Took my 2007 Yukon XL to the dealer for the same problem. They said it was the cam shaft bearings and would need a whole new engine!
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