Originally Posted by
VEGASROBBI
I have a e38 running an L9H 6.2 vvt/6l80. Tune is stock Silverado with vats patch applied. Runs great but in the last 5,000 miles it has gone into a limp mode, no power. Check engine light comes on, no communication with ECM. Cannot read or clear codes. Remove power from ECM reconnect and it's good for another few hundred miles.
I bought this ECM with a hpt file and ran it with no problems, reflashed it with tis then efi live. Support had me update to the newest versions and reflash. I thought this helped but a week later same thing. The one time I got a code it was a PCM corrupt code.
Purchased a new e38, flashed it with tis then efi live, runs great. Did it again today.
Any help is appreciated, thanks Robbie.