Wire Diagram for 01' 5.3 Vortec engine swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Butcherboy · 11-28-2009, 05:26 PM

Hello, Just asking if anyone Has ever built/reworked there own engine wire harness for the LS 5.3 vortec? Id like to try this myself, I have the stock harness and ECM. I will be using a After market chassis harness. The engine is in my 89' S-10 blazer. Current performance might be the one to do this for me, but I would rather save the money and do this at home.

I will still need the ECM burned and programed. If anyone has a over view diagram that shows the color of the needed wires for the engine functions and controls. I can take from there! I have done some marine wiring in the past, and feel I can tackle this!

Any help with this would be great!

Thank you guys!

Justin Kansas
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clinebarger · 11-28-2009, 08:21 PM

Blue connector.

clinebarger · 11-28-2009, 08:24 PM

Red connector

clinebarger · 11-28-2009, 08:30 PM

Data Link Connector

**Thealien** · 11-28-2009, 09:27 PM

LOTS OF USEFULL INFORMATION HERE

Butcherboy · 11-30-2009, 11:39 AM

Thank you very Much!!! Exactly what I was NEEDING!!!

Next Question.

What are the wires not needed?

You guys rock!!

Justin

**Thealien** · 11-30-2009, 12:41 PM

Quote:

Originally Posted by Butcherboy

Thank you very Much!!! Exactly what I was NEEDING!!!

Next Question.

What are the wires not needed?

You guys rock!!

Justin

If you look through the link I provided he actually has a page showing what wires need to be fed with a fuse/relay, which are not needed to run with pictures and everything. Spend some time clicking all his various links

**Thealien** · 11-30-2009, 12:44 PM

START HERE

99-02 HARNESS INFO

03-07 HARNESS INFO

Butcherboy · 11-30-2009, 01:13 PM

Thanks! Just what I needed. Think I have all the info I need!!! Again Thank you!! I'll let ya know how it turns out!!

Justin

Butcherboy · 12-07-2009, 12:48 PM

Started On the harness. Have everything except the relay and fuse box finished. Im gonna cheat and buy the relay box from Current Performance. Help speed things up! Thanks again for the info guys, started out good and wasn't as serious as I thought. Lots of reading and testing with the volt meter. Should have it done this week.

I forgot to tell you what my harness looked like when I bought this engine. The Jackass at the pick and pull cut the under hood relay and fuse pin connector under the hood. So no reference to go at, just had to beep test all the pink wires and label the injectors! LOL! I might just start doing harnesses after this little adventure, that's if things work!!

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Justin

**LEEVON** · 12-09-2009, 03:04 PM

Hey Justin,

Would you consider doing a write-up or FAQ or was the info from LT1swaps sufficient?

If I still feel retarded then maybe I am and I could be your 1st customer?

Butcherboy · 12-09-2009, 03:17 PM

Quote:

Originally Posted by LEEVON

Hey Justin,

Would you consider doing a write-up or FAQ?

If I still feel retarded and unable then maybe I am and I could be your 1st customer?

LOL! Im still getting mine reloomed. When I have everything done and tested, Hell ya for sure start a thread!

Just changed the injectors to LS1 style, and traced all the grounds and other uneeded wires. The LT1 site helped alot. Pictures helped, but the amp meter was the saving grace. Id be glad to help you when Im finished.

The hard part is next, the lay out for the engine. The truck intake is taller, so the ls1 is short. Just got damm cold here this week. I don't have a heated shop. Maybe if my relay box shows up, Ill have it hooked up on the block and then shorten or lenghten my wires. The Vortec harness was a Rats nest from hell! But fo the most part, Im heading in the right direction!

Keep ya posted!

Justin

70 Suburban · 12-11-2009, 04:42 PM

THANKS FOR ASKING THE QUESTIONS SO i DIDNT HAVE TO....LET US KNOW HOW IT GOES

**Thealien** · 12-11-2009, 06:10 PM

Glad its working out for you

70 Suburban · 12-11-2009, 06:33 PM

i DO NEED 2008 5.3 (TRUCK) DIAGRAMS THOUGH

**Thealien** · 12-11-2009, 06:42 PM

Quote:

Originally Posted by 70 Suburban

i DO NEED 2008 5.3 (TRUCK) DIAGRAMS THOUGH

TRY HERE

HERE

AND HERE

You should be able to find help at one of theose locations!!

70 Suburban · 12-11-2009, 07:01 PM

THANKS. i AM HOPING TO GET THIS DONE BY THE FIRST OF THE YEAR.

70 Suburban · 12-11-2009, 07:09 PM

Did you say that you did ecm flashing... Or do you have the software

**Thealien** · 12-11-2009, 08:25 PM

Sorry I do not. There are many that do from about$150-300+ and some lock their tune so nobody but them can change it.

70 Suburban · 12-11-2009, 08:43 PM

yeah thats why i want the software so i can do what I need to do and change what I man need to change

**Thealien** · 12-12-2009, 07:08 AM

Quote:

Originally Posted by 70 Suburban

yeah thats why i want the software so i can do what I need to do and change what I man need to change

The software from what I have seen is pretty expensive $500+ and there is a learning curve for using it. I am going in so many directions with my swap I am paying someone to do my harness and tune. If I do another I will do my own harness. I will probably always have someone else do the tune unless I find a great deal on the software.

70 Suburban · 12-12-2009, 10:41 AM

Thats true. I have tuned stanalone units ie haltech. motec. but never realy messed with stock ecu's. I would like to play with the software a bit to see what can be done.

Butcherboy · 01-02-2010, 04:55 PM

I have it Finished! Alot of work! Im not going to do this for living for sure! Too much to deal with, and would hate to have something happen to make some mad! Just gonna do this for myself and give the little info to anyone I can!

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Justin

**Thealien** · 01-02-2010, 06:01 PM

nice job! Keep us updated

Butcherboy · 02-11-2010, 06:54 PM

Thanks for the help Thealien. Im hooking things up this weekend. I bought a new chassis harness and scraped the stock wiring. I should have things wrapped up soon, that's if the weather holds! More parts came today! I just need to get after it!LOL!

Justin

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11-28-2009, 05:26 PM	#1
Butcherboy Registered User Join Date: Sep 2009 Location: Mulvane, Kansas Posts: 85	Wire Diagram for 01' 5.3 Vortec engine swap Hello, Just asking if anyone Has ever built/reworked there own engine wire harness for the LS 5.3 vortec? Id like to try this myself, I have the stock harness and ECM. I will be using a After market chassis harness. The engine is in my 89' S-10 blazer. Current performance might be the one to do this for me, but I would rather save the money and do this at home. I will still need the ECM burned and programed. If anyone has a over view diagram that shows the color of the needed wires for the engine functions and controls. I can take from there! I have done some marine wiring in the past, and feel I can tackle this! Any help with this would be great! Thank you guys! Justin Kansas

11-28-2009, 08:21 PM	#2
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Wire Diagram for 01' 5.3 Vortec engine swap Blue connector. Attached Images

11-28-2009, 08:24 PM	#3
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Wire Diagram for 01' 5.3 Vortec engine swap Red connector Attached Images

11-28-2009, 08:30 PM	#4
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Wire Diagram for 01' 5.3 Vortec engine swap Data Link Connector Attached Images

11-28-2009, 09:27 PM	#5
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: Wire Diagram for 01' 5.3 Vortec engine swap LOTS OF USEFULL INFORMATION HERE

11-30-2009, 11:39 AM	#6
Butcherboy Registered User Join Date: Sep 2009 Location: Mulvane, Kansas Posts: 85	Re: Wire Diagram for 01' 5.3 Vortec engine swap Thank you very Much!!! Exactly what I was NEEDING!!! Next Question. What are the wires not needed? You guys rock!! Justin

11-30-2009, 12:44 PM	#8
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: Wire Diagram for 01' 5.3 Vortec engine swap START HERE 99-02 HARNESS INFO 03-07 HARNESS INFO

11-30-2009, 01:13 PM	#9
Butcherboy Registered User Join Date: Sep 2009 Location: Mulvane, Kansas Posts: 85	Re: Wire Diagram for 01' 5.3 Vortec engine swap Thanks! Just what I needed. Think I have all the info I need!!! Again Thank you!! I'll let ya know how it turns out!! Justin

12-07-2009, 12:48 PM	#10
Butcherboy Registered User Join Date: Sep 2009 Location: Mulvane, Kansas Posts: 85	Re: Wire Diagram for 01' 5.3 Vortec engine swap Started On the harness. Have everything except the relay and fuse box finished. Im gonna cheat and buy the relay box from Current Performance. Help speed things up! Thanks again for the info guys, started out good and wasn't as serious as I thought. Lots of reading and testing with the volt meter. Should have it done this week. I forgot to tell you what my harness looked like when I bought this engine. The Jackass at the pick and pull cut the under hood relay and fuse pin connector under the hood. So no reference to go at, just had to beep test all the pink wires and label the injectors! LOL! I might just start doing harnesses after this little adventure, that's if things work!! Before: After: Justin

12-09-2009, 03:04 PM	#11
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: Wire Diagram for 01' 5.3 Vortec engine swap Hey Justin, Would you consider doing a write-up or FAQ or was the info from LT1swaps sufficient? If I still feel retarded then maybe I am and I could be your 1st customer? __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids Last edited by LEEVON; 12-09-2009 at 03:19 PM.

12-11-2009, 04:42 PM	#13
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Wire Diagram for 01' 5.3 Vortec engine swap THANKS FOR ASKING THE QUESTIONS SO i DIDNT HAVE TO....LET US KNOW HOW IT GOES __________________ Just keepin it simple. 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women)

12-11-2009, 06:10 PM	#14
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: Wire Diagram for 01' 5.3 Vortec engine swap Glad its working out for you

12-11-2009, 06:33 PM	#15
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Wire Diagram for 01' 5.3 Vortec engine swap i DO NEED 2008 5.3 (TRUCK) DIAGRAMS THOUGH __________________ Just keepin it simple. 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women)

12-11-2009, 07:01 PM	#17
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Wire Diagram for 01' 5.3 Vortec engine swap THANKS. i AM HOPING TO GET THIS DONE BY THE FIRST OF THE YEAR. __________________ Just keepin it simple. 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women)

12-11-2009, 07:09 PM	#18
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Wire Diagram for 01' 5.3 Vortec engine swap Did you say that you did ecm flashing... Or do you have the software __________________ Just keepin it simple. 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women)



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12-11-2009, 08:25 PM	#19
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: Wire Diagram for 01' 5.3 Vortec engine swap Sorry I do not. There are many that do from about$150-300+ and some lock their tune so nobody but them can change it.

12-11-2009, 08:43 PM	#20
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Wire Diagram for 01' 5.3 Vortec engine swap yeah thats why i want the software so i can do what I need to do and change what I man need to change __________________ Just keepin it simple. 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women)

12-12-2009, 10:41 AM	#22
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Wire Diagram for 01' 5.3 Vortec engine swap Thats true. I have tuned stanalone units ie haltech. motec. but never realy messed with stock ecu's. I would like to play with the software a bit to see what can be done. __________________ Just keepin it simple. 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women)

01-02-2010, 04:55 PM	#23
Butcherboy Registered User Join Date: Sep 2009 Location: Mulvane, Kansas Posts: 85	Re: Wire Diagram for 01' 5.3 Vortec engine swap I have it Finished! Alot of work! Im not going to do this for living for sure! Too much to deal with, and would hate to have something happen to make some mad! Just gonna do this for myself and give the little info to anyone I can! Justin

01-02-2010, 06:01 PM	#24
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: Wire Diagram for 01' 5.3 Vortec engine swap nice job! Keep us updated __________________ Click on my Not really a build thread, yet NOT SO RUST FREE RUST FREE BLAZER LS ENGINE SWAP INFORMATION THREAD BOLT RESTORATIONS 4l60 to an NP205

02-11-2010, 06:54 PM	#25
Butcherboy Registered User Join Date: Sep 2009 Location: Mulvane, Kansas Posts: 85	Re: Wire Diagram for 01' 5.3 Vortec engine swap Thanks for the help Thealien. Im hooking things up this weekend. I bought a new chassis harness and scraped the stock wiring. I should have things wrapped up soon, that's if the weather holds! More parts came today! I just need to get after it!LOL! Justin

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