BADSZ28

iTrader: (39)

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.

BADSZ28

iTrader: (39)

Anyone have any idea? I cannot find the differences. I found two different service part numbers.

BADSZ28

iTrader: (39)

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.

Iam Broke

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.

LSX Power Tuning

iTrader: (4)

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.

BADSZ28

iTrader: (39)

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.

BADSZ28

iTrader: (39)

I did post in HPT but nothing back on it. I did search it but minimal info. And mostly about car ECMs.

LSX Power Tuning

iTrader: (4)

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.

BADSZ28

iTrader: (39)

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.

BADSZ28

iTrader: (39)

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.