While doing a write entire on a 2005 GTO to apply the 15000 hz patch it lost communication with the TCM. Now it has no TCM communication and TCM appears to be dead. It does not control the tranny at all. I finally gave up and pulled the battery for a reset but still no luck Is there any way to save this TCM?
Have you checked the fuse for the TCM?
I've been having this problem on normal writes for a few months now. Not sure what the issue is but if you let the TCM "rest" for a few weeks they normally come back for whatever reason.
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
Had this happen twice. Once it trashed the TCM and the dealer could not re-flash. The other time I just left the battery disconnected for 48 hours and it came back. Good luck.
2010 Camaro SS/RS, I rebuilt 6l80, PATC clutches, ported the heads, Manifold, TB. Billet PATC 3500S 4disk lockup, New Era CAI. Ferrea HS, dual springs, Ti-ret. ARH long tubes-Xpipe, 3.91 gears. 235°/246° .625 .625 113 +4 LSA. VVT ACTIVE to 8 degrees retard. 485rwhp 446ft/lbs
Darin Morgan
-Induction R&D-EFI calibration
Reher-Morrison Racing Engines
Arlington,Texas
Phone 817-467-7171
http://www.darinmorgan.com
http://www.rehermorrison.com
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