PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

E38 Revisions?

Thread Tools
 
Search this Thread
 
Old Mar 24, 2014 | 12:30 PM
  #1  
BADSZ28's Avatar
Thread Starter
11 Second Club
iTrader: (39)
 
Joined: Jan 2003
Posts: 3,321
Likes: 1
From: NW Chicago Subs
Default E38 Revisions?

Are there different revisions of E38s out there? I have a harness from an 08 Silverado that I need an ECM for. I know I need an E38 but research has shown there are different PNs for them out there. Does it matter? I want to be sure it will work with my harness.
Reply
Old Mar 25, 2014 | 01:26 PM
  #2  
BADSZ28's Avatar
Thread Starter
11 Second Club
iTrader: (39)
 
Joined: Jan 2003
Posts: 3,321
Likes: 1
From: NW Chicago Subs
Default

Anyone have any idea? I cannot find the differences. I found two different service part numbers.
Reply
Old Apr 1, 2014 | 10:05 AM
  #3  
BADSZ28's Avatar
Thread Starter
11 Second Club
iTrader: (39)
 
Joined: Jan 2003
Posts: 3,321
Likes: 1
From: NW Chicago Subs
Default

I would like to pick one up soon. But I want some feedback so I am not limiting myself if one is better than another for my application.
Reply
Old Apr 1, 2014 | 11:57 AM
  #4  
Iam Broke's Avatar
On The Tree
10 Year Member
 
Joined: Aug 2011
Posts: 187
Likes: 0
From: Indiana
Default

I don't have the info but perhaps if you post in the HPTuners forum for GM Gen 4 V-8's someone can help you out.
Reply
Old Apr 1, 2014 | 12:37 PM
  #5  
LSX Power Tuning's Avatar
FormerVendor
iTrader: (4)
 
Joined: Mar 2013
Posts: 2,367
Likes: 26
From: Brenham TX
Default

E38's are not like the older ecm's where you can't flash them to anything you want. If you try to change the year or vehicle application they can easily be bricked. I would order an E38 for a 08 silverado, if you have the VIN where the harness came from I should be able to get you the part number for the E38 you'll need.
Reply
Old Apr 2, 2014 | 09:58 AM
  #6  
BADSZ28's Avatar
Thread Starter
11 Second Club
iTrader: (39)
 
Joined: Jan 2003
Posts: 3,321
Likes: 1
From: NW Chicago Subs
Default

Thanks for the reply. I do not have the VIN for the harness. I do know it was an 08. Would an 07 ECM work? I found one of those. I know the service PN is different than the 08 though.

Originally Posted by LSX Power Tuning
E38's are not like the older ecm's where you can't flash them to anything you want. If you try to change the year or vehicle application they can easily be bricked. I would order an E38 for a 08 silverado, if you have the VIN where the harness came from I should be able to get you the part number for the E38 you'll need.
Reply
Old Apr 2, 2014 | 10:02 AM
  #7  
BADSZ28's Avatar
Thread Starter
11 Second Club
iTrader: (39)
 
Joined: Jan 2003
Posts: 3,321
Likes: 1
From: NW Chicago Subs
Default

I did post in HPT but nothing back on it. I did search it but minimal info. And mostly about car ECMs.
Reply
Old Apr 3, 2014 | 12:01 AM
  #8  
LSX Power Tuning's Avatar
FormerVendor
iTrader: (4)
 
Joined: Mar 2013
Posts: 2,367
Likes: 26
From: Brenham TX
Default

On a standalone engine swap your TB, gas pedal, and ECM have to all match. The harness isnt really the issue IMO. Are all your parts off a 08 silverado? Where I see issues the most is when people get mismatched parts from salvage yards or just not knowingly mix up those parts.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Apr 3, 2014 | 08:25 AM
  #9  
BADSZ28's Avatar
Thread Starter
11 Second Club
iTrader: (39)
 
Joined: Jan 2003
Posts: 3,321
Likes: 1
From: NW Chicago Subs
Default

Originally Posted by LSX Power Tuning
On a standalone engine swap your TB, gas pedal, and ECM have to all match. The harness isnt really the issue IMO. Are all your parts off a 08 silverado? Where I see issues the most is when people get mismatched parts from salvage yards or just not knowingly mix up those parts.
Harness and pedal are both from Gen 4 trucks...no ECM yet. I know the cable is from an 08 Silverado. I think the pedal might be from an 07 truck. Need to check again. No ECM yet. TB is from an LS3 or LS7. I was under the impression these can be swapped without an issue. Maybe I am mistaken? the deeper I get into this project, the more confused I become.
Reply
Old Apr 3, 2014 | 08:41 AM
  #10  
BADSZ28's Avatar
Thread Starter
11 Second Club
iTrader: (39)
 
Joined: Jan 2003
Posts: 3,321
Likes: 1
From: NW Chicago Subs
Default

Looks like all 07+ truck pedals are the same...at least till 11. So I am best getting the 07 or 08 ECM? But those are different. Will the LS3 TB work with those ECMs? I think the service PNs are the same for car and truck respective to year. But then do I need a specific OS to match them all? Then what MAF do I run? I assume I can run any Gen4 knock sensors, cam and crank sensors as well as MAP sensor.

I really appreciate your feedback and responses.
Reply




All times are GMT -5. The time now is 03:52 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE