Wiring Scematics and Technical information

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Dec 5, 2023 | 02:09 PM

almost_bricked

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1st Gear

Joined: Dec 2023

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Wiring Scematics and Technical information

Hello,
I am wondering what you guys use for looking up technical specs.
examples: what language is the EBC / DIC programmed in?
what can i tune?
Basically what the mechanics have access to.
Do I need to pay for a super expensive service?

Dec 5, 2023 | 05:39 PM

CraigStu

Drifting

Joined: Dec 2019

Posts: 1,816

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From: Blacksburg Va

I signed up for Alldata diy. They have a ton of repair manual info, TSB info etc. Just today i looked up and printed the 'HVAC Actuators Learn' procedure which I will try tomorrow.

Dec 5, 2023 | 05:57 PM

Bill Dearborn

Tech Contributor

Joined: Oct 1999

Posts: 41,058

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From: Charlotte, NC (formerly Endicott, NY)

Quote:

Originally Posted by almost_bricked

You aren't going to get access to the software programs used to control the modules in the car. Even ECM tuners don't have access to the actual software used in the ECM. They have access to tables placed in the software that are used to enter control data into the programs but that is it. That software is proprietary to the company that developed it and they aren't going to let it out to the public for competitive and security reasons. It would be a nightmare if the wrong people got their hands on that software and changed it.

Bill

Dec 5, 2023 | 07:08 PM

Pktrusty

Pro

Joined: Apr 2022

Posts: 699

Likes: 132

From: Phoenix

I subscribed for all data but didn’t have any luck with it. Where do you find all the technical stuff? I may take another look.

Dec 12, 2023 | 05:31 PM

CraigStu

Drifting

Joined: Dec 2019

Posts: 1,816

Likes: 616

From: Blacksburg Va

I go to Alldata diy and click 'Login'. Then I click the top Alldata listing in the dropdown menu. that takes me to a page w/ a "Welcome Craig' and an orange box below it which I click. Tat goes to a page where you could enter make model, year etc or it lists 'Recent Vehicle' where my Stingray is listed in a clickable box. I click that and then I have to say the next page isn't as user friendly as I would like but I click around until I find what I want.

Dec 16, 2023 | 01:32 PM

Bill Dearborn

Tech Contributor

Joined: Oct 1999

Posts: 41,058

Likes: 9,822

From: Charlotte, NC (formerly Endicott, NY)

Quote:

Originally Posted by CraigStu

That will provide the information so a person can diagnose and repair faults. The OP asked how they could get copies of the software used to program the various modules in the car. On top of having the software, they would need the proper software tools to edit and load the software into the modules. That software itself would be considered proprietary either by GM or the supplier of the module. None of that software is necessary to maintain the vehicle and the vast majority of people couldn't understand it or use it to do anything but brick their car. Depending on the module I could see control software built on firmware to program programmable logic arrays and microcode to program any ALUs that may be used in the module.

Bill

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