Gathering parts , have a question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kwin · 10-19-2011, 01:38 PM

So far I have a 2006 5.3 and harness, a 2000 harness and computer , motor mount plate adapters , flywheel spacer is ordered ....

So here is the question, will the 2000 computer work with the 06 harness and engine, my cousin has the entire EFI live suite and will take care of the programing changes but he is not around right now and I need to know if I need to look for a new pcm.
The pcm I have is from a 6.0.
I plan on using the 2006 harness and am hoping to delete the wired throttle body , I have already picked up a cable throttle body.
Thanks for taking the time to read my post.

Keith

**Clyde65** · 10-19-2011, 02:43 PM

I dont think it will work, there are two kinds of PCM's one is blue/green and the other is for the DBW with the 58x reluctor ( I think that is right).

If it was me, I would get an aftermarket harness, sell the two you have and the PCM you have and buy the correct PCM. but that is me.

kwin · 10-24-2011, 11:28 PM

I appreciate your comments but I'm confused , on one hand everyone talks about how easy it is to modify the factory harness and the directions are easy to find , but no one seems to recommend this approach.
I have located a 2006 computer since the original post.

Thanks
Keith

mcmlxix · 10-24-2011, 11:57 PM

From what I understand, you need to have the harness and PCM match the motor. It has part to do with type and location of sensors on the motor, the previously mentioned reluctor and not all DBW pedals are the same. I just read that the wrong pedal assembly can cause the PCM to go into limp mode...

Shon · 10-25-2011, 08:13 AM

Have the company that is going to do your harness and PCM set it up for a cable style TB and it all will work.

usmcchevy · 10-25-2011, 08:37 AM

www.lt1swap.com has the step by step instructions and converting a harness is not hard IMO, just time consuming.

mcbassin · 10-25-2011, 11:15 AM

Quote:

Originally Posted by kwin

I appreciate your comments but I'm confused , on one hand everyone talks about how easy it is to modify the factory harness and the directions are easy to find , but no one seems to recommend this approach.
I have located a 2006 computer since the original post.

Thanks
Keith

Keith,
I'm in the process of reworking my harness right now. I have struggled ever since I removed the pins recommended at the LT1swap site. It may be easy if you are good with wiring (I'm not). If there is a step by step to get it all the way completed and you find it let me know. I would buy it.

10-19-2011, 01:38 PM	#1
kwin Registered User Join Date: May 2011 Location: Grande Prairie, Alberta Posts: 368	Gathering parts , have a question So far I have a 2006 5.3 and harness, a 2000 harness and computer , motor mount plate adapters , flywheel spacer is ordered .... So here is the question, will the 2000 computer work with the 06 harness and engine, my cousin has the entire EFI live suite and will take care of the programing changes but he is not around right now and I need to know if I need to look for a new pcm. The pcm I have is from a 6.0. I plan on using the 2006 harness and am hoping to delete the wired throttle body , I have already picked up a cable throttle body. Thanks for taking the time to read my post. Keith

10-19-2011, 02:43 PM	#2
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,547	Re: Gathering parts , have a question I dont think it will work, there are two kinds of PCM's one is blue/green and the other is for the DBW with the 58x reluctor ( I think that is right). If it was me, I would get an aftermarket harness, sell the two you have and the PCM you have and buy the correct PCM. but that is me. __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

10-24-2011, 11:28 PM	#3
kwin Registered User Join Date: May 2011 Location: Grande Prairie, Alberta Posts: 368	Re: Gathering parts , have a question I appreciate your comments but I'm confused , on one hand everyone talks about how easy it is to modify the factory harness and the directions are easy to find , but no one seems to recommend this approach. I have located a 2006 computer since the original post. Thanks Keith

10-24-2011, 11:57 PM	#4
mcmlxix Collector of Projects Join Date: Apr 2003 Location: Las Vegas Posts: 3,106	Re: Gathering parts , have a question From what I understand, you need to have the harness and PCM match the motor. It has part to do with type and location of sensors on the motor, the previously mentioned reluctor and not all DBW pedals are the same. I just read that the wrong pedal assembly can cause the PCM to go into limp mode... __________________ Rich 1972 K5 Blazer CST Click HERE D60 BIG BRAKE UPGRADE Click HERE

10-25-2011, 08:13 AM	#5
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: Gathering parts , have a question Have the company that is going to do your harness and PCM set it up for a cable style TB and it all will work. __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap

10-25-2011, 08:37 AM	#6
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: Gathering parts , have a question www.lt1swap.com has the step by step instructions and converting a harness is not hard IMO, just time consuming. __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index



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