Would like to get some transmission tuning in my van it is the duramax(lgh)/6l90.
Hptuners cannot read ecu, but reads tcm just fine. I was told by hptuners support that they have to be read...
Type: Posts; User: Sco444
Would like to get some transmission tuning in my van it is the duramax(lgh)/6l90.
Hptuners cannot read ecu, but reads tcm just fine. I was told by hptuners support that they have to be read...