2003 Escalade PCM -> 2004 GTO OS?
Thread Starter
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
2003 Escalade PCM -> 2004 GTO OS? My friend is in the middle of a LQ9 swap into his 2nd gen T/A. I am helping with the wiring but am not sure how he is going to end up getting his PCM re-tuned.
Right now he has a 2003 escalade PCM that is set up for fly by wire and an auto trans.
He is going to be running a cable TB and a t56 six speed.
I checked the computer and it has blue and green connectors. The pin positions on the PCM almost exactly match those of a 2004 GTO.
I was thinking his best option would be to have the PCM re-flashed as a 2004 GTO? will that work? Is there another option that is better? I read something about the DBW PCM`s or at least some of them do not have the IAC drivers, how do I tell if this is the case?
Right now he has a 2003 escalade PCM that is set up for fly by wire and an auto trans.
He is going to be running a cable TB and a t56 six speed.
I checked the computer and it has blue and green connectors. The pin positions on the PCM almost exactly match those of a 2004 GTO.
I was thinking his best option would be to have the PCM re-flashed as a 2004 GTO? will that work? Is there another option that is better? I read something about the DBW PCM`s or at least some of them do not have the IAC drivers, how do I tell if this is the case?
Unfortunetly, that will not work.
What you read is correct. It seems that GM tried to save some penny's on the PCM's. The 04 GTO is the only Cable driven TB with the 1 Mg (blue green) PCM. Because of this, the Blue/green PCM's that are in the other vehicles (trucks) do not have the physical IAC motor driver inside of them.
He can do want you are asking, but he will have to get a PCM that came specifically out of an 2004 GTO.
What you read is correct. It seems that GM tried to save some penny's on the PCM's. The 04 GTO is the only Cable driven TB with the 1 Mg (blue green) PCM. Because of this, the Blue/green PCM's that are in the other vehicles (trucks) do not have the physical IAC motor driver inside of them.
He can do want you are asking, but he will have to get a PCM that came specifically out of an 2004 GTO.
Thread Starter
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
That is what I feared. Since that is the case I will probably just have him pick up a 99-02 f-body t56 PCM. I can just repin the harness and change the green connector covers to red so that they will fit the PCM and then all that needs to be tweaked is the fuel management tables. OK new thought. I remember reading something about the calibration tables for the trucks and the f-body MAF`s being different.......how do I fix that? Can I just copy the calibration from a truck PCM and paste it into the f-body PCM? or do I have to do a segment swap? WTF is a segment swap anyway? 
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
You have to go by the service number of the PCM. The GTO PCM is far from being the only Blue/Green PCM that has IAC drivers.
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
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91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
Thread Starter
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
Is there a list of service #`s somewhere that tells which has the IAC drivers and which does not? I don`t have the service # right now, but I can have my friend check it.
Ryan
