My at4 XL diesel is at event code 3300 as of Thursday. I have a thread in the general discussion.
As of today it's 3400 with a tpw of 4/14
How are you getting the event codes?
My dealer texts me updates, but no codes, and getting order status from the virtual assistant on GMC website doesnt give a code.
Also, not sure why my dealer would know this, but he says they are only building 15 AT4 Ultimate's with the Duramax.
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