Has anyone had the TSB#21-04-00 done?

[RoryTek]

Would like to hear if anyone had their transmission ECM reflashed and did it work.

 

[Cooker]

Had mine ECM reflashed.



Did it work What are you trying to accomplish? What is the reason for wanting to reflash the ECM? What are you hoping it will do?

 

[RoryTek]

If you read the TSB you understand my problem, in the mornings my truck will start out in limp mode, if I turn off the truck a few times it will reset it self. I do have a modifed vavle body and a TC. I want to make sure this will fix the computer since shop time is not cheap. Maybe I'll have the dealer sign a form stating that if this does not work, no charge to me. I hope this fills in the black spaces.

 

[Bandit1]

i had mine relashed with the 21-04-00 after i had all of my DTT equipment installed. i only did it bc massdiesel told me i needed it, to tell you the truth i didnt notice a difference. so i couldnt tell you if it works or not, guess it did.

 

[Cooker]

With a modified valve body and TC, I don't think you will have any luck with the dealer signing to not charge you if it doesn't fix your problem. The dealer here charged me $45 for the reflash.



It sounds like a resistor will fix your problem, but a reflash may help too.



I'd get the reflash, and if it doesn't fix your problem, then add a resistor.



-Ryan

 

[RoryTek]

Bandit1, if your transmission was going into limp home mode would you know it plus it would of most likley have lit up the MIL.



Cooker, I do have the resistor already installed.

 

[Cooker]

RoryTek



Just a suggestion. Maybe you could try a different resistor. I would talk to the guys who did your transmission and/or Dunrite and see if they might recommend a different size resistor.

 

[Swamp Donkey]

I am in the process of going through the same thing. I am getting second gear starts. I have replaced the governor pressure solenoid, and put in one of Bill's dial-a-voltage to eliminate the problem. Neither of these worked. Bill K. now suggested I check out the TSB 21-04-00. I hope that fixes things up. Resistors did not cure my problem, maybe you will be luckier.

 

[RoryTek]

John, Tony at Dunrite also suggested that I get the TSB done. It just seems the computer is just to tight for a BOMBed transmission. Monday I'm going to call Max at Victorville Motors and setup a time.