p 1631 code

[MECHAN12]

i bought a new ecm and tcm for my truck (e67 2009 colorado 5,3l a4)
so that i could chang them out and tune them and keep my stock one.
that way if i bricked it i would have my stock one to put in. i installed the to computers and got a p1631 code and the crank relearn code .
the problem is it will not even turn over the motor . so my question is what do i do now?
here is my stock tune and the one out of the new ecm
thanks for any info on what to due
donald[ATTACH]10298[/ATTACH

[MECHAN12]

sorry about that here they are

[schwoch1]

Was it a 'brand spanky new' PCM from GM, or a used unit from a boneyard?
I have heard that there are some tables the EFI Live will not transfer over to a new PCM when doing a full reflash. Usually they are electronic throttle related items.... but who knows... You may need a full flash with a Tech 2 or a J2534 compliant device to get it up and going???
Hope someone else knows more than I do!!!


Mike
PS I would look at the files but I am on a Mac right now and EFI Live and Mac don't play... will look later!!!

[MECHAN12]

i got it from a company that dose tuning by mail and in person
donald

[Taz]

Hello Donald,

If you purchased the ECM from a reputable company, odds are the programming has been done correctly.

What Mike was saying is true - EFILive or other tuning software will not turn a V6 compatible E67 / E38 into a V8 compatible ECM - even with selecting a Full Flash (Calibration & OS). An appropriate “base tune” must be flashed with a Tech 2 (or similar device).

OK … that aside, P1631 is a VATS related DTC. I'm guessing the ECM was not configured to automatically relink with the BCM on first power up.

In your truck, connect the V2 and turn on the ignition to the run position. Open the V7.5 Tune Tool … click on the Flash menu heading at the top of the screen. Select “PCM security” from the drop down menu. Select your controller (E67) and connect. Select the VAT relink tab and click VAT and / or relink (can’t remember that screen exactly).

This will configure the ECM to look for, and connect with, a BCM when the ECM next receives ignition power (when you turn on the key).

Close the Tune Tool, turn off the ignition key, remove the V2 - wait at least 15 seconds.

After this turn the ignition key to the run position, but don’t try to crank the engine for a few seconds - then try to start the engine. You may have to turn the key to the off position and try cranking a second time, if it doesn’t start right away.

LS1-B guy … have never tuned an E67 … hopefully this gets you going.


Regards,
Taz

[MECHAN12]

thank you that i hope will take care of it i will put it back in and try it in the morning
you guys are the best that is for sure

[schwoch1]

Shoot.... you are right taz...... If I woulda bothered to register the P1631 code, I seen crank sensor code and glanced over the P1631 assuming it was the crank relearn code, you know what the say about assuming............
Do what Taz said, and then do a crank relearn, and you should be fine. I am also an LS1-B guy, but about to get balls deep into E67 tuning. kinda leary of it.... hopefully it aint as bad as some say it is!!!
Hope this all gets you going!!!

Mike

[MECHAN12]

well i will find out in the morning yea and i hope learning the e67 ain't all that bad lol
thanks
Donald

[MECHAN12]

ok i i gave it a try and it did not work i will mess with it some more this weekend (got to work) and it is raining now thanks again for the help
donald

[Taz]

Sorry to hear that ... you can also try a VAT link using ignition key cycles ... on the road again today - no access to manuals ... something like key to run position for 11 minutes then off for 3 minutes, cycle repeated 3 times ... if you don't have a service manual for your vehicle, check will your local GM dealer for specifics of the key cycle VAT (or ECM / BCM) relink.


Regards,
Taz

[schwoch1]

Most GM's are the ten minute cycle... Waiting out a Malibu after lock cylinder replacement as we speak.....
Most of them go as follows.... turn key on, attempt to start, vehicle will not start, theft light should be flashing. Wait ten minutes or so until theft light goes out. Shut key off, wait two minutes, turn key on and attempt to start vehicle, should start then, if not leave key on again until theft light stops blinking. Sometimes it will take in 10 minutes, sometimes it will do the long cycle that takes a half hour or three attempts!!
Hope this helps!!
Mike

[MECHAN12]

well that took care of it thanks a lot now i will get my wide band installed this weekend and start logging
Donald

[schwoch1]

well that took care of it thanks a lot now i will get my wide band installed this weekend and start logging
Donald

Glad to help, let us know how the logging and tuning goes!!!

Mike

[MECHAN12]

oh i will i am sure i will have at lest a 100 questions before this is over lol
donald
thanks again for the help

[MECHAN12]

oh i will i am sure i will have at lest a 100 questions before this is over lol
donald
thanks again for the help