I did not see the request to use a scan tool. No Crank issues seldom set any trouble code - I would have argued with Zip over that recommendation.

In any event, I would not worry about a misdiagnosis - it's a dealer, OF COURSE they have mis-diagnosed it. We all know what a bad SKREEM does, it causes the engine to crank and start three times, then you get NOTHING until you disconnect the battery - then you get three more cranks. If that is not what you are fighting, then that is not the issue. DID you try disconnecting the battery to see if you got three cranks? (Seems to me you did and nothing changed, indicating it's not the SKREEM.)

If it IS what you are fighting, SOS can fix it if you send them the SKREEM, ECM and key(s) for around $600, I believe.