I have been looking through the forums and have not seen this issue.

I replaced the engine in my 01 Blazer after the balance shaft went out of my old one. It was used with 54 k on it.

The issue is that right after I start the engine I get a p0301 code. It does not occur all the time but I can reset it and it will not come back until the next start.

I am not sure if the CASE learn was done after the engine change but I am hesitant to do it after having it done on my old engine and that is what did the balance shaft in (I had changed the crank sensor).

I would like to get this corrected to trade this truck off on another truck.

Thanks