Hi all, I?m trying to troubleshoot a no shift condition in my c10 swap. LM7 with DBC throttlebody, Nathan wei harness. I have been working remotely with a tuner and the truck is running very nice with the exception of the transmission not shifting.

Last week when it first fired up? It would run and shift from 1st to Overdrive or maybe 2nd to OD? TCC was initially wired backwards. Now corrected, and neutral safety switch was added to the transmission,TCC confirmed 12 V all the time at pin 33 blue, until I step on the brake. and we were able to make some eight minute runs around the neighborhood with it to get some good logs.

Once I corrected the TCC at pin33 I now I have a no shift condition. Looking for next troubleshooting steps.

051324_Idle_A.hpl051324_Idle_B.hpljosh 5.7 ls squarebody truck norris nsr cam headers tune + TCC AND SHIFT SCH CHANGE.hptjosh 5.7 ls squarebody truck norris nsr cam headers tune 8.hpt

Log A belongs with TCC tune.
Log B belongs to tune (8)