Search:

Thank you IARLLC! I have stepped away from the project for a while. I will try to mimic this behavior on pin 51 in a couple of weeks. Right now my pin 51 is not used, nor powered. I will need to...

Thanks for the time IARLLC! I have an 09 Benz C350... working on that thing is a biatch. I got slammed with home life and haven't been in the garage for a few days, except to fix other peeps...

dhoagland, I was able to try the SPS recal, SPS fast relearn, SPS recal, process and the transmission was still unresponsive. I am beginning to wonder if I have ECM to TCM communication issues. I...

I had some time to heat the trans up to temp (165-7ish) and try a few things...

GDS2 would never let me perform a fast relearn. Once the checklist screen would appear and validate the trans temp,...

Thanks HardH20!
So I can confirm that I never have accessory power to TCM pin 51. Most race or aftermarket 8L harnesses don't include power to that pin, and if they do they splice directly from pin...

Thanks for the reply HardH20! You present a tricky question here that I am not sure I can answer and have second guessed myself on this exact thing. This engine is in a Jeep, so there is not a "true"...

Thanks dhoagland! I will attempt a reflash again to see if the cali sticks after the relearn.

Thanks for the reply! I have already read and attempted this procedure twice.


Also this... https://gearsmagazine.com/magazine/8l90-diagnosing-strategies-a-look-at-diagnosing-new-technology/

I...

I have an L86 swapped into a Jeep with an 8L90 (RPM Extreme harness). Both came from a wrecked donor '18 Sierra 1500 Denali so the engine and trans have always been together.

After swap trans...