Checked codes found P0717 and P0700. Ran ground to pin 45 to a good body ground and ground tcm case to body grounds codes came back after 35 miles and hard throttle start . 07 chevy silverado z71 4l60e 10,000 miles after rebuilt had new input speed sensor at rebuild and new transmission wiring harness and solindes input sensor was new gm one
There is no such thing as a "known good" part, right? What is the condition of the fluid? Was the transmission cooler replaced at the time the trans was done? If not you may have deepr issues, but check the sensor for metal contamination. Wiring harness prone to chafing at the firewall. P0700 is not a code, it's a way for the PCM to illuminate the check engine light, just a placeholder.
No metal in pan .code po717 input senor short to ground all the wiring checks out fin
Check out fine at rest , I mean with out the vehicl moving, when the vehicle is in movement the Bibration can makes changes if partially short/ contact to any metal .
If you're that confident that the transmission speed sensor is OK and the wiring OK, then what does that leave you with? Is it your preference to replace the Transmission Control Module rather than a part of unknown origin> I'm surprised the tech nerds haven't jumped on this, but how confident are you in the signal quality from the sensor? I'm telling you right now, I'd be replacing a speed…