Hi, sorry to dig up an old thread, but was wondering if anything got done about this.
I am having issues with my 2009 deleted LMM express 3500 when it runs above 5000ft.
The problems are identical to the ones laid out by another LMM 3500 owner laid out in this thread https://www.dieselplace.com/threads/...ckness.736202/
In the end he had to delete the altitude tables in order to get his van running with a delete above 5000ft. His van ran fine at these altitudes when brought back to stock (with emissions)
I think this table mismatch is the cause of these problems LMM 3500 vans. Has it been fixed in a newer version?