Originally Posted by
ala_xfire
Do not rule out the transmission conductor plate. It has the transmission speed sensor and will put you in limp mode.
About $150, and there are threads here with a DIY.
0715 is what I had when my NAG1 5 speed conductor plate croaked.
After it went into Limp Mode.
Please take note of what is displayed in the little "PRNDL" LCD window. If it is a black rectangle, it may be the tranny.
If it does it again, put it in PARK, shut off ignition, wait a few seconds, re-start. It may work, it may not.
As Alaxfire says, there are a number of threads on this issue. It was the last thing fixed for "free" under warranty in my case.
And, yes, I convinced them to flatbed it 120 miles to the nearest stealership that would/could work on it.