TCCM diagram MP1626XHD NQF

Tiny
SBORNOE
  • MEMBER
  • 2012 CHEVROLET SILVERADO
  • 6.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 10 MILES
Is there anyone who can provide a diagram for the wires on these?
Tuesday, December 7th, 2021 AT 6:48 PM

17 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,189 POSTS
Hi,

As far as the schematics, I attached them below. What is happening? Are there any diagnostic trouble codes?

Let me know.

Joe

See pics below. Note: I had to cut the schematic in half to make it readable. I did overlap them so you can follow from one to the next.
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Tuesday, December 7th, 2021 AT 9:18 PM
Tiny
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Thank you so Much! Also need same for 2003-05 for comparing. I am using a LB7 and Allison 1000 in my Hummer H1 conversation. Also have a 11 bolt MP1626XHD NQF with new back housing for the transmission. Ideally, I would have used the manual shifter MP1625, but I was lucky to get the 1626, only that I need to wire up the shifter actuator with the correct round dialing wheel shifter switch as a standalone in some way. Also looking for 4 high/low switch, TCCM controller and wiring harness from the switch to the TCCM and T-case.
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+1
Wednesday, December 8th, 2021 AT 2:38 AM
Tiny
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Hi,

The additional schematics needed, are they for the same model?

Joe
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Wednesday, December 8th, 2021 AT 7:42 PM
Tiny
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Hi again. Really late reply here! Can you help me with schematics for ecm, tcm and tccm for LB7 Duramax, Allison 5 speed and t-case 263xhd? 2003-2005
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Thursday, October 20th, 2022 AT 4:10 AM
Tiny
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Hi,

The first 4 pics are of the TCM. The remaining pics cover the entire powertrain management system.

Let me know if this helps.

Take care,

Joe

See pics below.
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Thursday, October 20th, 2022 AT 6:12 PM
Tiny
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Thanks, that helps a lot! I could also need diagrams for the can bus data and specific the Wake-up signal for all the different BCM TCM TCCM and so on. For both LB7 2003-05 and LML 2011. I know the GMlan system is not the same on both. Thanks again.
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Tuesday, October 25th, 2022 AT 4:09 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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I realize these are both diesels. On the 2005, do you want the CAN schematics for a truck or the Hummer H1?

Let me know.

Joe
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Tuesday, October 25th, 2022 AT 8:07 PM
Tiny
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I need only for Silverado Duramax trucks (LB7 and LML), everything will be standalone in the Hummer H1.
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Wednesday, October 26th, 2022 AT 12:45 AM
Tiny
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Hi,

The attached are for a 2004, 2500 2wd and a 2011, 2500 2wd.

The first two pics are for the 04. The remaining pics are for the 2011. Take a look through them and let me know if they help.

Take care,

Joe

See pics below. Note: each page was cut in half to make them readable. I overlapped them from one to the next. There is a big difference between the model years.
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Wednesday, October 26th, 2022 AT 5:20 PM
Tiny
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Thanks again for all the help. But do you have the same schematics only for 4wd?
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Thursday, October 27th, 2022 AT 4:59 AM
Tiny
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Hi,

I do, LOL The first two pics below are for the 04, 4wd and the remaining pics are for the 2011, 4wd.

Let me know if that is what you needed.

Take care,

Joe

See pics below.
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Thursday, October 27th, 2022 AT 5:08 PM
Tiny
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That's great, thanks.

Now I need to compare to something else, do you have the schematic for Jeep 2014 with the NQH MP3023

shifter actuator with the correct round dialing wheel shifter switch as a standalone in some way. Also looking for 4 high/low switch, TCCM controller and wiring harness from the switch to the TCCM and T-case.
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Saturday, October 29th, 2022 AT 3:20 AM
Tiny
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Hi,

I would be happy to get that for you, but I have a favor to ask. Is it possible for you to start a new post? We try to keep the topics specific to one type of vehicle, so it is more helpful to others. I hope you understand.

Here is the link to start a new one:

https://www.2carpros.com/questions/new

Just copy and paste your last question.

Again, I hope you understand.

Take care,

Joe
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Sunday, October 30th, 2022 AT 12:23 AM
Tiny
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Can you help me with schematics for ECM, TCM and TCCM for LB7 Duramax 2500HD, Allison 1000 5 speed and t-case 263xhd? 2003-2005?

Need to compare.

Thanks again.
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Sunday, November 6th, 2022 AT 9:02 PM
Tiny
JACOBANDNICKOLAS
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Hi,

As far as the wiring for the ECM, the first pics below are the entire powertrain management circuit schematic. I had to cut each page in half to make it readable for you.

The last two pics are for the transmission control module with the Allison.

Let me know if this helps.

Take care,

Joe

See pics below.
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Monday, November 7th, 2022 AT 6:09 PM
Tiny
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Thanks again!

It looks almost correct; can I have the same schematic for the year before this one also? Up to 2003 maybe?

Because my TCM has a date 2003 on it and has two connectors red and grey.
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Tuesday, November 8th, 2022 AT 7:57 AM
Tiny
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Hi,

No problem. I attached what I have below for the 2003. Pics 1 and 2 are from the transmission circuit. The remaining pics are the powertrain management schematics.

Let me know if this helps.

Take care,

Joe

See pic below.
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Tuesday, November 8th, 2022 AT 6:51 PM

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