Replace a M1009 torque converter

Hi All,
I'm hearing some kind of transmission noise when I start to take off but stops after I get moving. No shakes or anything though. I believe it's from the torque converter?
Have a few questions.
1. If it is the torque converter I'm really not going to hurt anything else right if I keep driving it? It only has 64K on it and I don't drive it a lot.
2. I'm in the Indianapolis IN area. If I want to get it repaired does anyone have any recommendations on where a reasonable place is and what a reasonable cost would be?
Thanks

I have new in the box ones for 75.00 plus shipping. Now you have a baseline to go from.

I would say it is the pump suction on a dirty filter that you are hearing. Service the transmission and filter and go from that point. I say the sound goes away. And 64K is NOT the issue. 30 years + is the issue. Lots of cracked seals and parts inside the old TH400. Happy Holidays.

cucvrus said:

I would say it is the pump suction on a dirty filter that you are hearing. Service the transmission and filter and go from that point. I say the sound goes away. And 64K is NOT the issue. 30 years + is the issue. Lots of cracked seals and parts inside the old TH400. Happy Holidays.

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Thanks now to find out how to do that

Indyharleyguy said:

Thanks now to find out how to do that

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Download the -20 TM and go to the transmission section.

TM9-2320-289-20.pdf
TM9-2320-289-20 Unit maintenance manual for all variants CUCV.

TM9-2320-289-20P.pdf
TM9-2320-289-20P Unit maintenance and depot maintenance parts and special tool lists for CUCV.

Indyharleyguy said:

Thanks now to find out how to do that

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Easy as getting a large pan that will catch all the fluid. Unless you are a fortunate one and have a drain plug on the transmission pan. Just loosen all the M8 bolts with a 13mm socket and when they are all loose. take off the bolts on one side and allow the pan to lean and drain from one corner or side. Allow it to drain and loosen the remaining bolts one at a time. Carefully or you will bathe in ATF. Once you have the pan removed. You can remove 1 M8 bolt 13m/m and the spacer and the filter will come down. When you replace the filter with a new one be sure to install the O ring with the new filter. Easy to follow instructions come with the filter kit. I use Permatex the Right Stuff and the gasket. The Right Stuff makes a nice bounding agent to get the gasket to stay in place. Use a 1/4" ratchet to tighten the bolts and don't go wild. They do have a torque spec. But hand tight always works. It is just a transmission pan and as long as it don't leak and holds fluid all is well. That easy. About 1 hour to change it and another hour to scrub the transmission pan clean. Good Luck. Merry Christmas.

Have a good supply of floor dry or kitty litter handy before you start.

Well looks kinda like what i'm used to so we'll see what happens haha
Any gotchas I should look out for?

If you've done it on any civilian truck or car you already know what to do. It's the same. This isn't some Uber-Tactical Super Military Machine. It's a Chevy. An 84 Chevy. It's got a few extra military doo-dads, funky 24/12v charging/starting system, and a bit of cool factor. That's it. Other than that, it's just a Chevy.