Quote:
Originally Posted by TJay74
If you can get Chris White to program your BCM, then that will be the only way you will get this mod to work. Now with that, there is a cavet. It will work s long as you never let the dealer ever flash your BCM for any reason at all, if they ever do it will return your BCM to the on file calibration that GM has in their system for the options your vehicle has and that are tied to the VIN.
As I said earlier, this isn't a simple hard part issue. Any time you get into something that has calibration programming requirements then you are going to run into issues on the new cars.
For years the guys on the GM truck forums were just sure they could get the factory OEM trailer brake controller swapped over, 3 years down the road and you still cant get the OEM TBC in a truck that didn't come with one.
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Done that and wrote the bcm to work the tap shift on an a6 transmission swap to a 4l60e vehicle. Bcm re write is a piece of cake if know how to get around it. My 07 Tahoe I added a lot to it even the rain sensor wipers and wrote it all into the bcm.
I was looking here as trying to find a schematic on the diff as adding an e locker to the elsd and looking to piggy back it vrs doing it stand alone. Unfortunately gm doesn’t lock them fully for drag racing so now looking for go around as even the drag program they did offer wasn’t fully locking this diff fully.