I have a Blackbear Tune, I did the mailorder, got a different computer for the truck. My CEL has been on since, haven't been able to find a shop that can do a crank relearn yet. Now I'm living in Texas again, i have state inspection, so I decide to put the stock computer back in for the inspection. Now the truck won't crank. it'll turn over just fine. DIC says, "ENGINE HOT, A/C TURNED OFF", and "ENGINE POWER REDUCED." Thinking maybe I screwed something up, I put the Tuned computer back in... Same issue.

Any ideas??? Its the truck in my sig.

 

Have you contacted Black Bear yet? I would think they would have the best insight on this. Did you do everything the same as when you put in the Black Bear computer?

 

I haven't yet, I've been havin internet issues. I did everything, except the security relearn. I figured my stock PCM wouldn't need it. I'm thinkin I'll have to take it to the dealership.

 

When I did my computer I had to do the security relearn to get the truck to start and it was a pain in the butt and took me a few times and many hours to get it. I was told I should not have to do the crank relearn but did it anyway. Did you have the battery hooked up when changing computers out. the battery should be disconnected when you change computers.

 

The lower harness on the ECM is broken, the connector. The warranty is covering it, I think, they haven't told me different. The reason it wouldn't crank, the truck threw 12 failure codes because the harness didn't have a good connection.

 

Got her back... Runs like crap with the stock ECM in it though.