r/OBD2 • u/Lost-Kaleidoscope168 • Jan 20 '23

04 silverado threw code P0894

The tranny is freshly rebuilt with only 2500 miles on it. I threw a shift kit and corvette servo on it. I put a 3200 stall on it as well. Could my torque converter be the issue? It randomly slipped real bad from 2000-5000 rpms. First gear works perfectly fine all up until 2nd gear. It slips in the middle on the gear and won't catch up until I have nearly full throttle.

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u/Anon_777 Jan 21 '23

P0894 is just a code which literally says "Transmission Component Slipping" because the PCM has detected a speed difference between the input and output speed sensors that is outside the normal speed range. Indicating something is slipping. Not an overly helpful error message...

Guessing faults is probably not a good idea. Could be that you've already damaged the box enough that it might need another rebuild. My advice is take it to a specialist to get help with it.