Wiring harness question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

krue · 03-13-2018, 06:29 PM

Noticing some issues with the harness on the 03 Savana 6.0l harness. I have an 01 Silverado 4.8l parts truck. Can I use that harness for my swap? Both are drive by cable. The truck was 4wd with the4l60e and the van is 2wd 4l80e.

t300 · 03-13-2018, 09:27 PM

i used a 2001 silverado 4x4 4.8 harness on my 2002 6.0 lq4 motor. DBC and 4l60e. was my first LS rewire but went fine.

ls1nova71 · 03-13-2018, 10:09 PM

Quote:

Originally Posted by krue

Noticing some issues with the harness on the 03 Savana 6.0l harness. I have an 01 Silverado 4.8l parts truck. Can I use that harness for my swap? Both are drive by cable. The truck was 4wd with the4l60e and the van is 2wd 4l80e.

They're basically the same harness, but vans use a different MAF, so you may need to change the plug. Also, you will need to re-pin the transmission connector to a 4l80e if that's what trans you're using, but it's pretty straight forward. http://lt1swap.com/4l60e_4l80e_harness.htm

krue · 03-13-2018, 10:27 PM

Quote:

Originally Posted by ls1nova71

They're basically the same harness, but vans use a different MAF, so you may need to change the plug. Also, you will need to re-pin the transmission connector to a 4l80e if that's what trans you're using, but it's pretty straight forward. http://lt1swap.com/4l60e_4l80e_harness.htm

I was planning on swapping the truck intake on the van, it's not as fugly. I assume that is doable.

Dustytrix · 03-13-2018, 10:45 PM

Yes you can swap intakes,

Flubyu · 03-14-2018, 11:59 PM

I’ve heard the van harness gives you more wire length...may help with pcm mounting.

BR3W CITY · 03-15-2018, 03:35 AM

The main "leg" of the van harness has a good deal of extra length (like 14-18" IIRC). My donor was from a truck, and I had my harness done on the van-donor style. Made moving ECM mounting locations easier imo.

krue · 03-15-2018, 07:59 AM

My van harness has sensor wires cut out, multiple butt splices crimped on, to include mystery wires added.

03-13-2018, 06:29 PM	#1
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Wiring harness question Noticing some issues with the harness on the 03 Savana 6.0l harness. I have an 01 Silverado 4.8l parts truck. Can I use that harness for my swap? Both are drive by cable. The truck was 4wd with the4l60e and the van is 2wd 4l80e. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

03-13-2018, 09:27 PM	#2
t300 Registered User Join Date: Mar 2013 Location: Manitoba Posts: 184	Re: Wiring harness question i used a 2001 silverado 4x4 4.8 harness on my 2002 6.0 lq4 motor. DBC and 4l60e. was my first LS rewire but went fine.

03-13-2018, 10:45 PM	#5
Dustytrix Registered User Join Date: Jan 2012 Location: Petal,Ms. Posts: 428	Re: Wiring harness question Yes you can swap intakes,

03-14-2018, 11:59 PM	#6
Flubyu Registered User Join Date: Mar 2017 Location: Clever, Mo Posts: 69	Re: Wiring harness question I’ve heard the van harness gives you more wire length...may help with pcm mounting. __________________ '71 C-10 SWB Shop Truck Currently 350/350, soon to be LS'd.

03-15-2018, 03:35 AM	#7
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Wiring harness question The main "leg" of the van harness has a good deal of extra length (like 14-18" IIRC). My donor was from a truck, and I had my harness done on the van-donor style. Made moving ECM mounting locations easier imo. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

03-15-2018, 07:59 AM	#8
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Re: Wiring harness question My van harness has sensor wires cut out, multiple butt splices crimped on, to include mystery wires added. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

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