What ECU to use with 6.0L LQ9??

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01-31-2013, 02:08 AM

#21

the404man

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Quote:

Originally Posted by CalEditor

1999 - 2001 Camaro/Firebird/Corvette LS1 = 9354896 = 512kb

2002 - 2003 Camaro/Firebird/Corvette LS1 = 12200411 = 512kb

2004 Corvette & 2004 GTO = 12586242 = 1mb

2004 - 2005 Cadillac CTS-V = 12586242, 12589463 = 1mb

2002 - 2004 Holden = 12200411 = 512kb

1999 - 2000 LS1 Trucks (4.3L, 4.8L, 5.3L, 6.0L) = 9354896 = 512kb

2001 - 2002 LS1 Trucks (4.3L, 4.8L, 5.3L, 6.0L) = 12200411 = 512kb

2003 - 2005 LS1 Trucks (4.3L, 4.8L, 5.3L, 6.0L) = 12582605, 12586242, 12589463 = 1mb

2006 - 2007* LS1 Trucks (4.3L, 4.8L, 5.3L, 6.0L) (* classic trucks only ) = 12582811, 12602802 = 1mb

Some of the PCM's are DBW ONLY so it is important to know what the application is.

I like to use the 1mb pcm when ever I can

i have a 2004 chevy 2500hd 4x4 6.0 my OS ID 12585950, i want to run 3bar map speed density but the VCM enhancements only allow for 2bar, not sure why, but which one of those you have listed above will work with my truck and allow me to have 3bar map please thanks oh also how can you tell if your OS is 512 or 1mb cause all my saved files in HPT list as 519.. ah and do you know if you need the 1mb OS to run 3bar

Attached Files

2004 2500HD the404man stock unlocked.hpt (519.3 KB, 254 views)

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11-19-2013, 05:40 PM

#22

86_IROC-Z28

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Good topic. So if I where to get a 2005 Escalade LQ9 block‚ install a LS6 intake and slap in its OEM Escalade PCM‚ it will run like a LS1 corvette?

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10-20-2016, 05:13 PM

#23

Ozz1967

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To keep this now three year old thread relevant, I'm running an 04 LQ9 in my 84 T/A (I wll be once the swap is done), I should be able to run one of these 12582605, 12586242, 12589463 = 1mb, ECM's and be able to run my cable throttle body just fine?

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11-06-2016, 07:16 PM

#24

Ozz1967

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Quote:

Originally Posted by Ozz1967

I just went through my parts. I have 12582605. Going to be using a drive by cable set up.

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05-01-2017, 08:32 PM

#25

Pigfarmer

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Wiring

Looking at a LQ9 for my 97' silverado. Can someone help with the harness? There is no harness so I will need one, stand alone are other. email=bertrandmike66@yahoo.com

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05-03-2017, 07:59 AM

#26

Ozz1967

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Quote:

Originally Posted by Pigfarmer

Looking at a LQ9 for my 97' silverado. Can someone help with the harness? There is no harness so I will need one, stand alone are other. email=bertrandmike66@yahoo.com

Find "Pocket" here on the board. He built my custom third gen harness. He does great work and there are many people here and on thirdgen.org who swear by him.

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07-08-2018, 09:05 PM

#27

89ls10blazer

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i have a gen 4 ls 5.3 with ecm serv numb 12589463 hdw numb 12589162 yhzs its dbw i want to convert it to dbc what ecm do i need to do this please help with info thank you

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07-08-2018, 09:54 PM

#28

G Atsma

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If those are Gen IV PCM's they can't be converted to cable throttle. ALL Gen IV engines are wire throttle. GenIII pcms can't be used on GenIV without changing cam and crank reluctors and sensors.

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