Bingus wrote:Here is the bin I pulled from the 07 P12b I have. It is indeed 2MB.

It also took a lot longer to read due to failures - wondering if the resistor trick would help. I'm surprised at how unstable the P12b read was compared to the P12 I have.

Awesome, consider me proven wrong!

Yep the 07 is the p12b 2mb. I was able to reproduce this last night and I think the timeout is borderline too short for the larger sectors on the amd flash chip with the xpro timeout calcs. I'll try and get this sorted soon and send you a test build. Can you confirm the 07 actually has 2MB? GM talk...

P10: MY 02-05 P12: MY 04-07 For P04/05, I'm not as familiar as the others on here with these PCMs. So you are telling me that there is an overlap of years where the vehicle COULD have EITHER a P10 OR a P12? (04-05) The P04 is a FWD (3100, 3400, 3800) V6 PCM up to 2005 or so, while the P05 seems to ...

I am HOPING to go to the local JY this Saturday and get a few PCMs. Anyone care to help me with models, years, and powertrains to look for? ALSO, does anyone KNOW what the cutoff year was for the P10, P12a, and P12b? Thanks, Mike P10: MY 02-05 P12: MY 04-07 (P12a=1MB - I believe P12b/2MB is more a ...

Can you confirm you've converted the factory PCM to a P01/P59 PCM with this swap? A 99 Yukon 5.7+60E would have come with a Vortec BlackBox PCM, which isn't supported by PCMHammer at this time.

I've got a few P10s and would be happy to test. Send me a link to a version of PCM Hammer (or Github link?) with the changes and I can test!

If you can (know some eBay listings have 1 bad pic), look at the connectors: P12s have small - big - small. E67s have small - big - big.

Gampy wrote:Thank you!

Bummer ... They said it's out of an 08 Trailblazer 4.2, connectors didn't look right, I didn't order it.

That's exactly what it's out of. My 08 TrailBlazer 6.0 has the same p/n, OS should be 12618164.

This is an E67, P12 was 06-07 only.

So if I read that correctly then the P12 was used on 4,5, and 6 cylinder engines. Which would be really interesting they all used a common Operating System with different calibrations like the P01/P59 did. Yes, all Atlas family engines (I4/I5/I6, 2.8/2.9/3.5/3.7/4.2L displacements) used the P12 at ...

Maybe this is the main or secondary/DBW one? I believe there are 2 chips that are really CPUs in the P12 (and P10). The main and secondary, with secondary being the DBW/electronic throttle controller. Both are in the PCM, similar to how all Gen IV+ ECMs do DBW.