check engine light.....valve covers leaking?

7speed

Picked up car yesterday evening but didn't get to see paperwork of work done because they need to redo to remove the charges. But he said valve covers were leaking but it's covered under 3yr/36k not the 5yr/60k. So that's why my extended warranty would come into play since I'm at 48k.
But then I said well the short block was replaced in Jan and valve covers is part of that, #1 thats pretty weak if its failing already, that means in a few months I could need to replace again and #2 isn't there a warranty on the short block job. He asked another advisor who said yeah should be 1yr/12k and told him to look up my records. Hasn't been year and I haven't driven 12k so they said they will need to remove charges and take back extended warranty claim and mail me paperwork.

TSB was for steering lock, which I figured.

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09 370z 6spd traded 1/12/15 for 15 Challenger RT 6spd