So I've been struggling with this rear diff issue - trying to figure out what to do. I had read somewhere that someone used the GAP tool to remove the locking diff from the CCF. Maybe this would do, I thought.

Anyway, I removed it. Then all my HDC programs disappeared.

In a panic, I reinstalled the locking diff via the CCF on GAP but the HDC programs are still gone.

So....

What have I f*ed up now and how can I get it back?

(am currently doing a hard reset in case anything helps with that)

 

Crisis over. I did a hard reset.

My heart stopped for a bit there.

Still that transmission fault remains!

 

And the codes are??