Who knows about th400's/gm auto transmissions?

[Bob Kazamakis]

So today driving the blazer it decided to make a grinding noise randomly going about 15mph. I pulled onto a side street and as I came to a stop it died. It felt the same as if you were coming to a stop in a manual trans vehicle without disengaging the clutch.

I then got out and gave everything a look over and found nothing. Started it back up and it runs absolutely fine in park. Put it in gear and instantly dies. When I say instantly dies, I mean it doesn't sputter and die like the engine isn't idling high enough or something. It basically feels like the TC isn't letting go.

I checked the fluid level and its normal. The color is a nice normal red without any thing shiny in it and it doesn't smell.

Could a TC just up a quit working or would that be a pressure issue?

Click to read more...

 

[Eagle]

Guessing the TC is locked up... Or pump failure killed the TC.

 

[Bob Kazamakis]

Would popping the bolts out of the TC-flywheel and spinning it test the TC being locked up?

There's no noise coming from the trans while its in park/neutral. I assume if something physically broke off (vanes) that it would be making a racket.

If it is the TC and the pan/filter isn't full of metal, is that something I could get away with changing and not rebuild the trans?

 

[Eagle]

If there's nothing in the pan and the TC is locked... Then yep... Seems to me like you could just swap the tc out.

 

[Bob Kazamakis]

So a little update. I removed the TC bolts from the flywheel about a week ago and it made all sorts of busted metal sounds. I took a vid I'll post later.


Fast forward to today. Dropped the pan and no metal shavings. Had a bit of typical sludge but not much at all. Swapped the TC and got it back up under the truck. The old one sounds so broken giving it a shake.

I'll button it up tomorrow. I just have the new pan and 1 damn bolt on the passenger side for the engine to trans.

This fucker is heavy to move on your own.

 

[willsmysticcobra]

I still want one of these

 

[Eagle]

So the flexplate broke?

 

[IceCreamAssassin]

Converter did...

 

[Eagle]

Converter did...

Cool. Accurate diagnosis on my part then!

 

[Ti28]

You might want to atleast drop the valve body and check.clean the governor screen.

 

[Chester Copperpot]

Suddenly my internet history has Blazers from craigslist in it again.

 

[Spivitz]

GL getting it back together.

I love that truck!

 

[Outlaw]

Suddenly my internet history has Blazers from craigslist in it again.

Agreed.

I'd still rather have a deuce if space would allow. Dude had one at Country Thunder with like 40 bitches dancing in the back. WORTH. EVERY. PENNY.

M35 Military Deuce 6X6 Truck with Cummins Engine

 

[EmersonHart13]

CO broke your truck.

 

[Bob Kazamakis]

Finished it up a few hours ago. Took 13 quarts of ATF.

Back home.