Tech2 vs MDI?
Thread Starter
Racer
Joined: Sep 1999
Posts: 346
Likes: 1
From: Orlando FL
Tech2 vs MDI?
So,
I have a 2012, and want to be able to do a few things (read codes, control the bi-directional stuff, etc). None of the standard tuning or scan tools seem to be able to do much beyond the Engine or Transmission modules (I have a scan tool and a EFILive). I really do miss the ability to review codes like we could on the C5!
It "appears" that the Corvette still uses the Tech 2 for 2012 ???
The Helm manual will not be out until August so it is no help.
Certain GM cars are starting to require the MDI tool, but from what I have read, it only supports those cars.
I was wondering if anyone knows for sure which one the 2012 Corvettes are using.
I have a 2012, and want to be able to do a few things (read codes, control the bi-directional stuff, etc). None of the standard tuning or scan tools seem to be able to do much beyond the Engine or Transmission modules (I have a scan tool and a EFILive). I really do miss the ability to review codes like we could on the C5!
It "appears" that the Corvette still uses the Tech 2 for 2012 ???
The Helm manual will not be out until August so it is no help.
Certain GM cars are starting to require the MDI tool, but from what I have read, it only supports those cars.
I was wondering if anyone knows for sure which one the 2012 Corvettes are using.
Racer
Joined: Apr 2008
Posts: 270
Likes: 8
From: Michigan
So,
I have a 2012, and want to be able to do a few things (read codes, control the bi-directional stuff, etc). None of the standard tuning or scan tools seem to be able to do much beyond the Engine or Transmission modules (I have a scan tool and a EFILive). I really do miss the ability to review codes like we could on the C5!
It "appears" that the Corvette still uses the Tech 2 for 2012 ???
The Helm manual will not be out until August so it is no help.
Certain GM cars are starting to require the MDI tool, but from what I have read, it only supports those cars.
I was wondering if anyone knows for sure which one the 2012 Corvettes are using.
I have a 2012, and want to be able to do a few things (read codes, control the bi-directional stuff, etc). None of the standard tuning or scan tools seem to be able to do much beyond the Engine or Transmission modules (I have a scan tool and a EFILive). I really do miss the ability to review codes like we could on the C5!
It "appears" that the Corvette still uses the Tech 2 for 2012 ???
The Helm manual will not be out until August so it is no help.
Certain GM cars are starting to require the MDI tool, but from what I have read, it only supports those cars.
I was wondering if anyone knows for sure which one the 2012 Corvettes are using.
My guess would be that the 2012 would use the same tool that the other C6s use. I doubt they changed the vehicle CAN communications for 2012, so I don't know why the scan tool would change.
Melting Slicks
Joined: Dec 2006
Posts: 2,694
Likes: 106
Corvettes have a CANbus system???? In 2005 it was a rare occurrence, and as you said, don't think GM changed it in the middle of production, no? Just curious.
And as a related question, what's the best value tool to buy just to read and clear all codes on a 2012, including ABS and any other system? It'd also be nice to change the cooling fan temperature activation, but don't want to touch the ECU during warranty. Thx.
And as a related question, what's the best value tool to buy just to read and clear all codes on a 2012, including ABS and any other system? It'd also be nice to change the cooling fan temperature activation, but don't want to touch the ECU during warranty. Thx.
Thread Starter
Racer
Joined: Sep 1999
Posts: 346
Likes: 1
From: Orlando FL
To both questions. No, to my knowledge they have not changed from the CAN bus, they just are investing in a newer technology (wireless with a laptop) for the interface to the car. My 2006 Z06 had a CAN bus. All GM cars will eventually use the new system.
As to reading other modules (like the ABS), I believe someone said one of the units that Snap-On makes does, but almost no reader you can purchase that I know of for under $500 will read anything but the ECU (and maybe the Transmission controller). Less can do the bi-directional controls (like controlling the ABS to bleed the brakes).
Before spending $$$$ (and no I don't plan on purchasing a knock-off), I would like to know which one works. The MDI is significantly cheaper (hardware) than the Tech 2 (though probably because of the knock-offs or change to the MDI the Tech 2 appears to be dropping)
As to reading other modules (like the ABS), I believe someone said one of the units that Snap-On makes does, but almost no reader you can purchase that I know of for under $500 will read anything but the ECU (and maybe the Transmission controller). Less can do the bi-directional controls (like controlling the ABS to bleed the brakes).
Before spending $$$$ (and no I don't plan on purchasing a knock-off), I would like to know which one works. The MDI is significantly cheaper (hardware) than the Tech 2 (though probably because of the knock-offs or change to the MDI the Tech 2 appears to be dropping)
Instructor
Joined: Mar 2014
Posts: 197
Likes: 2
I'm a Gm tech. The tech 2 is used on obd2 Gm vehicles. I believe late 2013 Gm released the last tech 2 update. Now every vehicle for now on will be using gds with the mdi so mdi is replacing the tech 2 I guess u can say
Pro
Joined: Aug 2012
Posts: 678
Likes: 25
From: Albuquerque New Mexico
This is correct. I'm a shop foreman for a GM dealership.
Melting Slicks
Joined: Jun 2011
Posts: 3,118
Likes: 599
So,
I have a 2012, and want to be able to do a few things (read codes, control the bi-directional stuff, etc). None of the standard tuning or scan tools seem to be able to do much beyond the Engine or Transmission modules (I have a scan tool and a EFILive). I really do miss the ability to review codes like we could on the C5!
It "appears" that the Corvette still uses the Tech 2 for 2012 ???
The Helm manual will not be out until August so it is no help.
Certain GM cars are starting to require the MDI tool, but from what I have read, it only supports those cars.
I was wondering if anyone knows for sure which one the 2012 Corvettes are using.
I have a 2012, and want to be able to do a few things (read codes, control the bi-directional stuff, etc). None of the standard tuning or scan tools seem to be able to do much beyond the Engine or Transmission modules (I have a scan tool and a EFILive). I really do miss the ability to review codes like we could on the C5!
It "appears" that the Corvette still uses the Tech 2 for 2012 ???
The Helm manual will not be out until August so it is no help.
Certain GM cars are starting to require the MDI tool, but from what I have read, it only supports those cars.
I was wondering if anyone knows for sure which one the 2012 Corvettes are using.
https://www.autoenginuity.com/products/scan-tool.html
From my 2010 GM Manual there are 2 data link types used.
1. High Speed GMLAN
2. Class 2
Depending on the module you wish to communicate with each have a design data link type.
eg. Body Control Module (BCM) uses High speed GM Lan
Passenger Door Module uses Class 2
I get the same results when I have connected to any C6 2010-2012 corvette.
This scan tool can read all the modules installed in my 2010 GS vert. Also includes bi-directional controls etc.
This may be a good alternative to a clone Tech2 and certainly a good choice vs a Tech2.
I have tested the unit by creating actual faults in my car by pulling fuses, disconnecting wires etc. It has reported the correct faults each time.
If you are interested I could show you more on this tool connected to my 2010 GS. This tool also allows you datalog while you drive. I have logged a few 1/4 mile passes to see what the engine is doing.
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