Transmission question when swapping from 6.2l to 6.5l.

[Odakrem]

Hello all!

Im doing a swap from a 6.2 to a 6.5. I had a question about the transmission.

1.The trans on the 6.5 has a TCM, where can I get the wiring harness for the TCM?


Pics:

 

[hummer4x4guy]

I'm doing the same thing Odak and I believe the best thing/only thing to do is to swap out the body harness also.


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[Odakrem]

I was afraid of that.

So so if I pick up an A2 body harness it would have the TCM harness already in it correct?

Anyone have one for sale? Haha

 

[hummer4x4guy]

You are correct.


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[Retiredwarhorses]

You need a few more things than that folks. Like drive shafts, brake switch, trans relay, circuit breaker, trans X member.

 

[Retiredwarhorses]

I was afraid of that.

So so if I pick up an A2 body harness it would have the TCM harness already in it correct?

Anyone have one for sale? Haha

thats an order item...expect to pay well over 1k for this harness

 

[86humv]

Hello all!

Im doing a swap from a 6.2 to a 6.5. I had a question about the transmission.

1.The trans on the 6.5 has a TCM, where can I get the wiring harness for the TCM?


Pics:
View attachment 617375View attachment 617376View attachment 617377

Harness if found are around $ 1500 or more.
You'll need a trans X member, drive shafts, shifter, trans / T/C lock lights, New differential yokes.

 

[Odakrem]

Ok, thanks for letting me know what else was needed.

Money is of no concern for this project. This is my bosses truck, he has money. He just bought two USMC MK48(HEMMT's for the Army folk for ****s and giggles.)

Can anyone confirm that this is intact the NSN for the A2 body harness. 5995011883269


Also so does anyone know the nsn for the other items? I can find them in the TM but if anyone has them handy that would be great.

Also a website that might have most of these parts for sale would be extremely helpful as well.

Here are his other tucks he bought just because he likes em,haha.

 

[Odakrem]

Just in case he doesn't feel like getting all the extra stuff, can I just swap the motors? Will the trans that's mated to the 6.2 work with the 6.5?

 

[hummer4x4guy]

I was able to find an A2 ambulance wiring harness for $780. So if you have time to wait you can find a decent deal.


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