Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Junkyard 5.3 w/out pcm

Thread Tools
 
Search this Thread
 
Old Jan 7, 2015 | 07:51 PM
  #1  
Azuber01's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Jan 2015
Posts: 26
Likes: 0
From: Western MA
Default Junkyard 5.3 w/out pcm

Bought a junkyard 5.3 without the pcm. Made a deal with the guy so I can take whatever else I need from the yard to make it run. What do I need to get? Just a harness and pcm from a different truck? I tried looking it up but couldn't find anything. Thanks
Reply
Old Jan 8, 2015 | 11:30 AM
  #2  
omc8's Avatar
TECH Fanatic
15 Year Member
iTrader: (7)
 
Joined: May 2009
Posts: 1,539
Likes: 26
From: columbus,ohio
Default

Is this going to be a swap ?Try to get the original harness if you dont have it . Get the VIN # from the donor truck , this help you in matching up the correct pcm . 2003 and later trucks are dbw so you need match every thing up.
Reply
Old Jan 10, 2015 | 08:59 AM
  #3  
Azuber01's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Jan 2015
Posts: 26
Likes: 0
From: Western MA
Default

Yes it going in a 79 Camaro. I think the motor is a 99. So I should try and get a pcm from a 99 or 2000? he has a couple 2000 5.3 that are still in the trucks.
Reply
Old Jan 10, 2015 | 01:46 PM
  #4  
omc8's Avatar
TECH Fanatic
15 Year Member
iTrader: (7)
 
Joined: May 2009
Posts: 1,539
Likes: 26
From: columbus,ohio
Default

Originally Posted by Azuber01
Yes it going in a 79 Camaro. I think the motor is a 99. So I should try and get a pcm from a 99 or 2000? he has a couple 2000 5.3 that are still in the trucks.
Try to get the vin # for your engine they should have a history on it even if been crushed now. Yes pcm is same you can use 99-00 truck or 99-00 F- body just make sure its LS not V6 . Do you have a good uncut harness ?
Reply
Old Jan 10, 2015 | 03:25 PM
  #5  
Azuber01's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Jan 2015
Posts: 26
Likes: 0
From: Western MA
Default

I don't have a harness yet but the guy at the yard said I can take a harness and computer from another truck.
Reply
Old Jan 10, 2015 | 07:45 PM
  #6  
omc8's Avatar
TECH Fanatic
15 Year Member
iTrader: (7)
 
Joined: May 2009
Posts: 1,539
Likes: 26
From: columbus,ohio
Default

Originally Posted by Azuber01
I don't have a harness yet but the guy at the yard said I can take a harness and computer from another truck.
Tell us in detail what your plan is ? What combo are you going to use transmission , accessories , intake , exhaust manifolds and such. If the money is close to the same , you may better off to return that 5.3 and just get a complete pull out engine harness pcm and trans . To completely remove the harness cleanly, unplugging not cutting any thing , in the yard took me over 2 hours my first time. I could do it faster now but , you may want to take a buddy with you to help it go faster. Its easier to just leave the harness connected to the engine do your unplugs from the tranny and body and go with it. The benefit to this are many, it will save time and you know its a match . Complete pullout is the way to go if you can . when you add up buying the alternator , starter , maf and such it starts add up real quickly.
Reply
Old Jan 10, 2015 | 08:02 PM
  #7  
Azuber01's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Jan 2015
Posts: 26
Likes: 0
From: Western MA
Default

Everything is on the motor except the pcm.im gonna use a ls intake ls6 cam stock manifolds. Probably turbo it next year. Want to try and use my stock 4 speed but if the doesn't work I'm gonna buy a t56. And anything that isn't there the owner of the yard said I can come back and take. I haven't looked at it yet so I don't know if the harness is on it or not. I'll repost when I get it next week.
Reply
Old Jan 12, 2015 | 04:25 PM
  #8  
omc8's Avatar
TECH Fanatic
15 Year Member
iTrader: (7)
 
Joined: May 2009
Posts: 1,539
Likes: 26
From: columbus,ohio
Default

Originally Posted by Azuber01
Everything is on the motor except the pcm.im gonna use a ls intake ls6 cam stock manifolds. Probably turbo it next year. Want to try and use my stock 4 speed but if the doesn't work I'm gonna buy a t56. And anything that isn't there the owner of the yard said I can come back and take. I haven't looked at it yet so I don't know if the harness is on it or not. I'll repost when I get it next week.
So you have everything, but the harness. Your going to run a LS1 intake with truck accessories ?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Jan 13, 2015 | 10:00 AM
  #9  
Azuber01's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Jan 2015
Posts: 26
Likes: 0
From: Western MA
Default

Yup Thats the plan anyways. I know I'm going to have to make some adjustments or use other accessories. I'm not too worried about that. I just wasn't sure about the pcm and harness working from another truck. its getting tuned anyways I just wanted to make sure the 0411 were all the same for those years
Reply
Old Jan 13, 2015 | 11:07 AM
  #10  
omc8's Avatar
TECH Fanatic
15 Year Member
iTrader: (7)
 
Joined: May 2009
Posts: 1,539
Likes: 26
From: columbus,ohio
Default

Yeah 99-00 , just need have the VATS removed and program for gear , tire size and such .
Reply




All times are GMT -5. The time now is 09:27 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE