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View Full Version : Cannot do a crank relearn on 2007 Sierra GMT900


thunder550
April 25th, 2008, 05:46 PM
Tried to do a crank relearn today on a 2007 new body style Sierra. Connected with the E38 PCM. The CKP Learn button in the Bidirectional menu was grayed out...I tried everything I could, different PCM types, etc and never could get the CKP Learn button to activate.

I'm running v7.4. Is this a version issue, or is it unavailable, or what?
ScarabEpic22
April 25th, 2008, 07:27 PM
I tried it with v7.5.4 and april 14th bb/fw via LS1 controller (should work on the P10 LL8) and got nothing. With 7.4.x I could get the panel to come up but it wouldnt do the relearn as I couldnt rev past 4000rpm and fuel never cut off.
GMPX
April 26th, 2008, 11:11 AM
Many of these bi-directional have been added in for the newer controllers such as the E38, currently this is still beta software though.

Cheers,
Ross
motoxxx
April 26th, 2008, 11:38 AM
Many of these bi-directional have been added in for the newer controllers such as the E38, currently this is still beta software though.

Cheers,
Ross

So if he downloads ver. 7.11 do you think he can do the crank relearn without a problem?

Thanks
thunder550
April 27th, 2008, 05:24 AM
Many of these bi-directional have been added in for the newer controllers such as the E38, currently this is still beta software though.

Cheers,
Ross
Which version is this? 7.5.3 is the latest full release but I don't see where I can download any later beta releases.
kbracing96
April 27th, 2008, 06:04 AM
Which version is this? 7.5.3 is the latest full release but I don't see where I can download any later beta releases.

http://forum.efilive.com/showthread.php?t=7905