nag1

I am not sure where to start on my issue but it started a month ago I purchased Premium TCM tune from HP, I got the tcm with high hopes after what I have read about AJ . When I got it I installed it and nothing but cel codes about the nag1 and after 5 hours of trouble shooting it with no luck...

SOLD-Tranzformer Gen 1 -$150-SOLD Used Tranzformer Gen 1 for sale. I have gone over to a custom TCM. Everything works as intended, has latest firmware. You will need new T-Taps for installation. Includes a printed set of directions/installation instructions. Generic photo will add actual...

Hi, Excuse for my English, but i'm a french Canadian. I have a Challenger R/T Classic 2013 with an automatic 5-speeds transmission (NAG1). I have a weird problem the morning after a cold night (above -10 degree Celsius). I know that the transmission have a cold temperature protection, but I...