Yes and no Howard.
The 2006/2007 should be fine, worst that will happen with a 2008 is the VIN will get corrupted and the Crank Relearn will need to be done.
Thinking about it, 12597121 probably covers 2006-2007, 12612384 is for 2008.
Yes and no Howard.
The 2006/2007 should be fine, worst that will happen with a 2008 is the VIN will get corrupted and the Crank Relearn will need to be done.
Thinking about it, 12597121 probably covers 2006-2007, 12612384 is for 2008.
I no longer monitor the forum, please either post your question or create a support ticket.
I've never been able to flash an 08 calibration into a 121 ECM. Haven't tried working it backwards.Originally Posted by GMPX
Tried flashing a '10 truck cal into a junk 455 ECM (broken retaining tab) and it took the calibration fine, EFILive couldn't retrieve the calibration though.
If you put a real '10 OS into a 5455 E38 then you probably have a brick now.
12633238 is the '10 as Ross listed above. GM parts info lists it as "no start" if cal is not right.
It was a useless E38 to me as it was and had to test a theory. GM listed both the 5455 and the 3238 for that truck for some reason, depending on software version.If you put a real '10 OS into a 5455 E38 then you probably have a brick now.
12633238 is the '10 as Ross listed above. GM parts info lists it as "no start" if cal is not right.
Theory?
I HATE when that happens! Got one of them here.
24x LS1 PCM on Early Small-Block Chevy and LT1/LT4
http://www.eficonnection.com
That's the problem, it will take the calibration fine, it's what happens on the next power cycle that is bad.
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