Originally Posted by
Drake87
So... the problem was a part that I shoulda thought of way before. I swapped in my original ECM and it fired right up. Voltage regulator in it is out which is why’s I got a new plug n play one. Was then thinkin that my new ECM was trash. Then I think one step farther and make myself realize that I intentionally left stage II chip on new ECM. No longer on truck. Plug it back into original computer which is still in the truck, no spark. Remove it, fires up. Install new ECM with no chip, fires up... ����*♂️ Installed the chip 11 years ago and just so used to seeing it there that I forgotten it was aftermarket and not required lmao.
Running now but won’t shift outta first gear. Thinkin solenoids ��