What I learned about repairing ALLISON TCM's: A look into the 6.6L GM Truck transmission modules.

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[@partoems9376]

Hi, please do a video on the best methods you use to open your ecus. The way your ecus are opened i think it's done best. Lids are not contoured, bent, etc. I want to learn it but of course learn from the best.

[@ecurepair]

Great suggestion!

[@jdvazquezz17]

I have a tcm that I need repair… could I get your info

[@A2ZREY]

I have a p0778 I think it’s tcm 2003 dmax Allison 5speed any diag can be done ?

[@AndyVasbinder]

Have you noticed the cracks in the plastic housing that run across the wire bonding pads? do the units you disassembled have that same crack? I have looked at 2 so far there is a crack running left to right across the field of pads. It may or may not have anything to do with the failures...not sure. If the chip is bad like you showed then obviously the crack is not the problem

[@ecurepair]

I think I have seen what you mentioned, but the problem with these is always the mpc. Im going to start taking them again soon. Stayed tuned for some videos!

[@maverickf13]

Hey man, if I mail one to you would you fix it and if so, how much would that run me? Thanks for the useful content.

[@ecurepair]

keyworks.us/transmission-control-module-repairs-c101.html

[@maverickf13]

Thank you!@@ecurepair

[@maverickf13]

What's the turnaround time please?

[@keyworksva]

@@maverickf13 3=5 days usually

[@Oldsmob455]

Are you repairing these again?

[@ecurepair]

I was for awhile but stopped again. Just takes too much time and is not reliable enough for my liking.

[@Oldsmob455]

@@ecurepair Thanks for the reply.

[@MrPolaris800crew]

Hello sir, may I ask what conformal coating stripper are you using for the soft silicone? Thanks

[@ecurepair]

Some stuff I bought from newark. I think its called techline. It doesn't work all that well. Usually brass brush is needed.

[@rogelioesquivel5315]

❤ what is the name of that break out box

[@ecurepair]

Its custom made. I named it "GM Allison TCM Quick Tester" .... Im not very creative with names.

[@JZX834L]

Have you heard of these having a faulty speed sensor input? Have one right now that the sensor was replaced on and wiring tested ok.

[@ecurepair]

No but I dont mess with them too often.

[@amenchaca21]

Are you able to give the info and parts list of what all you would need to build what you have to repair. Also would a person be able to use a snap on Zeus scanner to go through your troubleshooting.

[@ecurepair]

Im not sure what you mean. Are you asking what tools and parts you would need to repair them or what I am missing to do them? I dont have a part list ob them but only the DSP chip uses an inhouse part number. I have no experience with snap on tools sorry so Im not sure.

[@amenchaca21]

I’m sorry I didn’t explain my first message better. Yes sir I’m looking to start repairing them for our fleet trucks and needing a parts list. My it people are hoping they can build what your working with as they have build system for diagnostics for me already.

[@ecurepair]

@@amenchaca21 The video pretty well discusses the problems they have and what needs to be done.

[@davidadderley257]

@keyworksecu repair you repairing them i have one i need repaired are you willing to fix mine ill pay

[@davidadderley257]

​@@ecurepair any recommendation for me to get a new one or mine fixed

[@joes2085]

Are the older Allison TCM easier to work on? The one with the two Jack's Red & Gray

[@ecurepair]

Dont know them sorry

[@dudewhoareu]

What if you set the tcm on dry ice so the heatsink keeps that side of the board kinda cool I wonder if that would work?

[@ecurepair]

When reballing you need to have a good even heat on the pcb as well as the chip. Since the pcb is attached to the heatsink Its actually better to have the heatsink heated to a safe temperature just under the melting point. Then get the top heat just right.

[@tonychacon4372]

Do you do repairs for the general public?

[@ecurepair]

Sure, everyday. keyworks.us

[@dondaugherty-t4p]

What is the best way to get the back plate off of my TCM I’m trying to take it apart so that I could hand it off to a guy and see if he’s able to repair it

[@ecurepair]

The back plate is glued to the plastic housing and the pcb. Its best to leave it. If you want to separate the pcb from it, hen you need to cut the plastic housing away, shim the pcb off it, and you would need to break the 50-100 bonding wires to separate the pcb from connector and heatsink completely.

[@CarlosElHalabi]

Hey! I haven’t noticed you use that board GM ALLISON TCM QUICK TESTER, is that for sale somewhere?

[@ecurepair]

Its just something I made. Don't have any for sale sorry.

[@CarlosElHalabi]

Also, wouldn’t reballing be possible on that board you have pulled apart? That is a MPC562 if I’m not wrong

[@CarlosElHalabi]

I agree with you, it’s basically impossible to do this without destroying the plastic case. Most of this modules never were built with ease of repair in mind. I also agree with you, they never took the appropriate care of their customers with this, and bonded wire really sucks.

[@ecurepair]

@@CarlosElHalabi Yes you can reball it but you need to remove the board from the case and remove all the bonding wire. Underneath the mpc is also a medium sized flash bga chip and bga eeprom. and I mean DIRECTLY under it. so you need to reball and reflow all of them together because they will bridge. The bga alone doesnt bother me, I have nice equipment for that. If I had a wire bonding machine I would probably do them again but with trying to rewire the connector plus all the bga work, its just too much time for me to invest in it with all my other work. The case is easy to cut and board is pretty easy to remove. It all can be put back together pretty nicely with the silicone adhesive I use. Mostly it was just the wire bonding that was the final straw. The contacts on connector are also aluminum so its not easy to replace them with copper jumpers.

[@zachdavis1776]

Just tried to purchase one and it says your out of stock.. I have mine I can send. What do you charge to fix my 2014 Chevy lml duramax tcm?

[@ecurepair]

I you can send it in if you want but chance of success if pretty low

[@A2ZREY]

2003 d Max Allison 1000 4x4 I have a video of it posted need help trying to figure out if it’s my tcm that’s bad thanks p0778 I’ve tried lot of things still no fix

[@ecurepair]

Sorry I dont know much about the older allison tcms.

[@NathanWest-w3d]

What do you charge???? Where do I send mine??

[@ecurepair]

link is in video and the description

[@MrOscar442cutlass]

can i send you a 2003 module to test?

[@ecurepair]

I dont have a testing rig set up for the 2003 ones sorry.

[@Jengoboys603]

Funny I had a national tyranny company tell our shop they rarely fail says they keep stats on it 3% failure. Lol. In the Peterbilt and kw they mount them in the cab over the heater box not smart. Hear failure prone with a huge heat sink mounted to the heater brilliant

[@ecurepair]

There is a place in Canada that does good work and says the same thing as well but I guarantee you its not true. I had tons of people try and send it to me AFTER that same place sent it back saying it wasn't repairable with a $90 testing fee attached.

[@Jengoboys603]

Good sounds like I should be sending you our work.

[@ecurepair]

@@Jengoboys603 any time. be happy to dot it

[@MrOscar442cutlass]

or does anyonone knows a trustworthy company that can do it i think the last place just charged for a repair but truck is doing the same thing

[@ecurepair]

I'm slowly starting to take them again.

[@joeblow3934]

@@ecurepair have an A40 part # 29544772. Can you repair it? If so how much? Thank you what you do.

[@johnysvids9499]

Would you repair my TCM module if i pay you

[@ecurepair]

Wish I could!