Stripping LS parts truck... how much of the wiring do I need? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Notch1988 · 12-19-2010, 09:24 PM

I bought a 2002 1500HD for the drivetrain. I'm stripping it down right now but I'm not sure how many harnesses/wires I need to keep. Obviously the harness connected to the engine/pcm, but do I start pulling the wires that run under both sides of the truck and the bundle heading under the dash?

68GMCCustom · 12-20-2010, 12:48 AM

So I guess it has a LQ4 and 4L80e? My guess is you'd need the harnesses that connect to the motor, the trans, and if you want to retrofit the gauges or keep the OBD port you'll need the dash harness.

As far as body or interior harnesses...not sure why you'd need them?

**scotts62** · 12-20-2010, 09:15 AM

I would pull it all just to have for a "just in case" but thats just me. I always seem to not get enough stuff when i part one out and like to have more than i need rather than wish i had it after i hauled it off.

GaryM · 12-20-2010, 10:54 AM

here is a page i used to convert my harness over to stand along good info on it.
http://lt1swap.com/wiringharness.htm

hope that gives you more info.

Gary

usmcchevy · 12-22-2010, 12:23 AM

Quote:

Originally Posted by scotts62

I would pull it all just to have for a "just in case" but thats just me. I always seem to not get enough stuff when i part one out and like to have more than i need rather than wish i had it after i hauled it off.

Thats what I had the guy I got my motor from do........but now I have about 25 feet of harness to sort through

**scotts62** · 12-22-2010, 12:25 AM

Quote:

Originally Posted by usmcchevy

Thats what I had the guy I got my motor from do........but now I have about 25 feet of harness to sort through

ya it can get confusing really fast. I need to find one for an '07 one of these days but its on the back burner for now..

tk-mpl · 12-22-2010, 06:22 AM

its good you got it all there. you'll need all the sensor connector and pcm connectors. the big bulk head connectors that go to the fuse block aren't neccessery unless you are using the oem fuse block. the dlc under the dash you can just cut that out of the dash harness and then just reattach it to your harness once its in the truck.

Notch1988 · 12-22-2010, 12:51 PM

Quote:

Originally Posted by tk-mpl

its good you got it all there. you'll need all the sensor connector and pcm connectors. the big bulk head connectors that go to the fuse block aren't neccessery unless you are using the oem fuse block. the dlc under the dash you can just cut that out of the dash harness and then just reattach it to your harness once its in the truck.

Ok, so don't bother chasing the cab harness. Just remove the obd2 connector from under the dash and rewire it in the new truck. That's what I figured... same goes for fuel pump wires, fan wires etc just have to run new wire from the PCM. Good to know, saves me a ton of work.

tk-mpl · 12-22-2010, 09:39 PM

All I got was the engine/trans harness with both the TCM and PCM. It all came on a pallet. All I had to get was the DLC connector, fuse block and accelerator pedal connector. I got them from current performance for a really good price. After that just rip and tear! Just make sure you label all the connectors with tape so you know where they go.
Posted via Mobile Device

12-19-2010, 09:24 PM	#1
Notch1988 Registered User Join Date: Aug 2009 Location: Lacombe, Alberta Posts: 335	Stripping LS parts truck... how much of the wiring do I need? I bought a 2002 1500HD for the drivetrain. I'm stripping it down right now but I'm not sure how many harnesses/wires I need to keep. Obviously the harness connected to the engine/pcm, but do I start pulling the wires that run under both sides of the truck and the bundle heading under the dash?

12-20-2010, 12:48 AM	#2
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: Stripping LS parts truck... how much of the wiring do I need? So I guess it has a LQ4 and 4L80e? My guess is you'd need the harnesses that connect to the motor, the trans, and if you want to retrofit the gauges or keep the OBD port you'll need the dash harness. As far as body or interior harnesses...not sure why you'd need them? __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

12-20-2010, 09:15 AM	#3
scotts62 One day... Join Date: Apr 2008 Location: Tuttle, Ok Posts: 9,243	Re: Stripping LS parts truck... how much of the wiring do I need? I would pull it all just to have for a "just in case" but thats just me. I always seem to not get enough stuff when i part one out and like to have more than i need rather than wish i had it after i hauled it off. __________________ Scott 93 crew cab build Project 62

12-20-2010, 10:54 AM	#4
GaryM Registered User Join Date: Aug 2007 Location: Walla Walla Washington Posts: 11	Re: Stripping LS parts truck... how much of the wiring do I need? here is a page i used to convert my harness over to stand along good info on it. http://lt1swap.com/wiringharness.htm hope that gives you more info. Gary

12-22-2010, 06:22 AM	#7
tk-mpl Registered User Join Date: Jan 2008 Location: Lacombe, Alberta Posts: 353	Re: Stripping LS parts truck... how much of the wiring do I need? its good you got it all there. you'll need all the sensor connector and pcm connectors. the big bulk head connectors that go to the fuse block aren't neccessery unless you are using the oem fuse block. the dlc under the dash you can just cut that out of the dash harness and then just reattach it to your harness once its in the truck. __________________ 1968 short box stepside. 2007 5.3L 4L60, tuned w/EFI Live 2005 Silverado bucket seats. Dominator 2600's all around. Porterbuilt tubular control arms. Magnaflow 3" dual exhaust.

12-22-2010, 09:39 PM	#9
tk-mpl Registered User Join Date: Jan 2008 Location: Lacombe, Alberta Posts: 353	Re: Stripping LS parts truck... how much of the wiring do I need? All I got was the engine/trans harness with both the TCM and PCM. It all came on a pallet. All I had to get was the DLC connector, fuse block and accelerator pedal connector. I got them from current performance for a really good price. After that just rip and tear! Just make sure you label all the connectors with tape so you know where they go. Posted via Mobile Device __________________ 1968 short box stepside. 2007 5.3L 4L60, tuned w/EFI Live 2005 Silverado bucket seats. Dominator 2600's all around. Porterbuilt tubular control arms. Magnaflow 3" dual exhaust.

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