Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
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The timing chain tensioner can rattle intermittently like this here causing this fault.I have seen several do this before and can be inconsistent like this.If they dealer has made sure this isnt an issue with the idler or tensioner pulley or a component driven by the drive belt then I would suspect this as the cause here and usually it does require further investigation to make sure and repair it.
As for the oil consumption usually the only way to really correct this is to have the fault repaired.This can be valve seals or engine piston oil rings causing this.I know some have gone to a thicker weight oil but this on this engine can harm the engine over all so it isnt advised.
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