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The Fi-Tech engineer was not accurate in telling me that it would work for the 4L70E, it in fact cannot work for it as it has a different type of control valve unit. I returned the Fi-Tech and purchased an EZ-TCU controller. That one is working. Here is a link to my new video about the...

Here is the video I posted on YouTube yesterday on installing the FiTech Transmission Controller.

I called Powertrain Control Solutions (the company who made the TCU for the Growler) to ask about testing and or repair to the Transmission Control Module. The Tech guy I talked to said "that was made for the military, just throw it away, we don't care about anything made for the military. The...

I love spell check It changed rear steer to rear armrest lol

From what I see with all of the diagnostics I have done the rear armrest will work with a stand alone unit. In the shift housing there is a micro switch that senses reverse and first gear shift positions and I am assuming that is for the rear steer as it only works in those gears.

I would greatly appreciate it if I could try it in one of yours. It takes about 10 seconds to connect it.

I will drop the pan next to see if there are any signs of debris. Also my speedo does not work, I changed the trans output speed sensor, the old sensor was leaking fluid. The new sensor did not fix the speedo problem, that is another reason I believe the TCU is dead.I have opened up the dash and...

I believe it is the TCU that is at fault, I cannot find a fuse for the transmission, only one for the transmission fan, is there another fuse that I don’t see for it? I have power at some of the pins on the harness that goes to the TCU. I think I am going to buy a stand alone TCU as the...

When I engage my Transmission into any forward gear it goes to a higher gear, It doesn't start out in first and it doesn't upshift. If I am in high range it boggs so bad I can not really take off, If I put it into 4 low I can drive it but it doesn't shift up or down. Reverse works good, but in...