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ECM/BCM programming using MDI 2

Old 01-26-2017, 09:19 PM
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CASHCARS69
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Default ECM/BCM programming using MDI 2

Hello can any of you Tech guys help or answer these questions Please?
Well I purchased a 2014 Chevy Corvette C7 Convertible with 4k miles from the dealers auction about a month ago. The vehicle wouldn't start so I replaced the ECM and BCM. I had no problems reflashing the ECM with my ToughBook & MDI 2, but the BCM on the other hand is giving me nothing but issues, my MDI 2 will not communicate with the bcm nor can I reprogram transmitter keys. Question True or False once a transmitter key is programmed can it be reprogrammed and reused??? What are the steps or process to reflashing a BCM??? Any Good advice would be Greatly Appreciated...

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Old 01-26-2017, 09:31 PM
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SleepDr
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My MDI 2 will only flash up to 2013. I cannot access 2014 and up. The key fobs can be reused because you are actually programming the car to it, not the other way around.

Last edited by SleepDr; 01-26-2017 at 09:31 PM.
Old 01-26-2017, 09:43 PM
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CASHCARS69
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Originally Posted by SleepDr
My MDI 2 will only flash up to 2013. I cannot access 2014 and up. The key fobs can be reused because you are actually programming the car to it, not the other way around.
Thanks for the quick reply, but let me clarify I'm trying to reprogram the original transmitter key fobs that were programmed to the original ECM and BCM, and I am having issues doing so... In regards to your MDI 2 you shouldn't have any trouble accessing 2014+ software unless you're referring to a Tech 2 programmer...
Old 01-26-2017, 11:28 PM
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sonny615
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Keys can be programmed no limit on times.
For BCM program. Start with ignition in OFF POSTION and key in key pocket.
After that the immobilizer needs to programmed too.

Then go back and select BCM configuration and set up.

If you still can't communicate with it you def need to start checking power , grounds and data wires.
Old 01-27-2017, 06:05 PM
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CASHCARS69
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[QUOTE=sonny615;1593958955]Keys can be programmed no limit on times.
For BCM program. Start with ignition in OFF POSTION and key in key pocket.
After that the immobilizer needs to programmed too.

Then go back and select BCM configuration and set up.

If you still can't communicate with it you def need to start checking power , grounds and data wires.

Thanks for the Good Advice I will try this procedure Highly Appreciative...
Old 01-27-2017, 10:02 PM
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SleepDr
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CASH, you were right, I can access 2014 & 2015 with my software.

Thanks for the info.
Old 01-28-2017, 11:27 AM
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sammy burks
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what do MDI stand for
Old 01-28-2017, 03:42 PM
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CASHCARS69
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Originally Posted by sammy burks
what do MDI stand for
MDI Multiple Diagnostic Interface for GM Vehicles.
Old 01-28-2017, 03:54 PM
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Default MDI Multiple Diagnostic Interface

Originally Posted by CASHCARS69
MDI Multiple Diagnostic Interface for GM Vehicles.
Did you get the BCM programed If not I have a fix for the problem
Old 01-28-2017, 03:59 PM
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CASHCARS69
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Originally Posted by sammy burks
Did you get the BCM programed If not I have a fix for the problem
No I have not any help would be Greatly Appreciated...
I'm actually at the shop right now still trying to figure out how to reprogram my transmitter key fobs that were already programmed to the original ECM, I'm having a very hard time trying to do so Thanks.
Old 01-28-2017, 11:00 PM
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jwbert
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Where is the BCM located on a C7?? Thanks
Old 01-29-2017, 07:43 PM
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Originally Posted by jwbert
Where is the BCM located on a C7?? Thanks
The BCM is located on the passenger side floor board underneath the carpet big black box can't miss it...

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