so the valvebody and everything within it LOOK good.

the tcc on the otherhand was frozen up. couldn't push any air through it or anything. builder left it partially unbolted so fluid could flow through and the car is better in gear but still loading up too much in R and D3 D4. going to pick up a new tcc with harness and a valve body and toss it all in there and see what comes of it. pressure is still 150 or so in D and 180 in R

reman'd vb on the way and a new tcc with harness. im sick of chasing the issue n just bought both.

what are the odds that this ate up my new converter?

 

I think the new VB and harness are a good idea and excellent chance this will fix the problem.
If your converter is now NOT dragging the engine and killing it when you are stopped, I think your converter will be just fine.

 

Thanks for the info. Dropped of the car at the place where the conversion was done. So glad they are married to it. I gave them all the info and Hopefully i'll get my ride back shortly ready to go..

 

soooo got a new vb, new tcc, and new separator plate installed.....didn't fix the issue.

now we are really at a loss

 

Wow. I am also at a loss. I'm sorry if my advice caused you to waste time and money.
And Dana is at a loss too?
I will carefully read the thread again tonight to see something was missed or misunderstood.

 

Is it possible the wrong year stator support was used?

Quote
New replacement stator support with extra wide bushings installed

 

That is a good point! Before I read your post I was talking on the phone to the OP (Update: I was talking to his trans builder) and quizzing him on this exact issue. He said his trans is a 2005 but non-ISS. I know the stator shaft changed for ISS. Since he still has his old stator shaft, I suggested he measure it and then ask Dana for the measurement of the one he most likely included in the kit.

Using the GM Tech 2 scanner, the OP confirmed that the PCS current stayed around .8 amps which should give low line pressure (e.g. 90psi).
In more detail, he said that when shifted into D3 or OD, the pressure would start at 90 psi, but after a second or two suddenly spike to 150+ at which point the engine would bog down too.
That two second delay is an additional puzzler.

Since I don't know if the .8 amps from the scanner is the actual current or just the commanded current, and so much else has been checked and/or replaced, that I would try swapping out the TCM.

 

I’m sure you have thought of this already, just brain storming here. The last thing I want to do is muddy water here.

Is this why the trans was rebuilt in the first place? If this wasn’t the problem in the first place I am hesitation to think the TCM is defective, it almost has to be in the trans. Maybe the pressure switch assembly. If one for those o rings on the pressure switch assembly is leaking couldn’t or even missing that send false info to the TCM. This could cause the line pressure to go high or TCM to think it is in a different gear than what it really is. It is so easy to dislodge those o rings when cleaning.

 

bbond105, you sure know your stuff and are thinking hard about this strange case.
Excellent point about the TCM - was it working before the rebuild?
I was also going to ask if the Pressure Switch Manifold was replaced along with the new VB. Some of the strangest trans problems reported here turned out to be due to a bad one.

Glad you are trying to help too! Definitely not muddying the waters.

 

Put a pressure gauge on it and see if the overall line pressure fluctuates when it acts up compared to when it doesn't.

Unplug the main connector completely and see if the results are the same.

I have a couple of other things in mind but check those tests first and report back.

 

Rebuild was originally done due to old converter blowing so very unlikely that it's the tcm since it functioned fine prior.
Already tested pulling the connector to the trans and it did the same thing but pressure went up. In 1 and 2 it'll hold the pressure around 70-75. Trans-go suggested it could be a pump issue with either a leaking passage or wrong stator support possibly

New pressure switch went in with new vb

 

You have an internal issue, pressure should be way higher with the connector unplugged.
Diagnose the pressure problem and the converter problem may resolve itself.

 

I talked for 30 min yesterday to the OP's trans builder and, as I remember the conversation, when the connector was unplugged the pressure was 200+ in all forward gears and 250+ in reverse.

I agree that a bad TCM is unlikely.
Something related to the pump or stator shaft is looking more likely. It would not be the first time someone installed the wrong stator shaft or damaged the pump in the process.

Thanks for helping Jake!

 

Correct on the pressure, my last post was confusing.

I think that's the next step is looki at stator support then pump. He's pretty determined to find the issue over the weekend.

 

Whelp trans is coming out to check the stator support. After that we are sittin dead in the water n back to the drawing board.

 

FIXED!!!!!! I WAS PROVIDED THE WRONG STATOR SUPPORT FROM THE SUPPLIER WHO SOLD ME THE KIT.......along with the wrong trans filter.

Cars been down for a while now due to being supplied wrong parts and a wasted trip to the tuner.

 

Congratulations, I am glad you got it fixed. Sometimes you have to pull them out a few times before you get it right. You just have to stay calm and think things through.

 

The supplier sales rep has likely never built a transmission. It is the builder's responsibility to inspect and determine a parts serviceability.

 

After your post #35 I had to a chance to discuss this with a local builder. I knew that '05 was a transitional year with older style pumps without ISS and newer style pumps with ISS. However my local builder said he has also seen newer style pumps without ISS - the ISS hole was simply plugged.
The newer style pump has a square cutout near the boost valve and they take a different stator shaft than the older pumps.

Jake: The "supplier" was Dana. I think it was just an honest mistake due to the pump variations in '05. But yeah, it is the builder's responsibility to double check that the supplied parts are compatible. There are subtle but visible differences between the older and newer style stator shaft.

Anyway, glad you got it fixed and working! Even I spent a lot of time and research pondering this strange problem.

 

it was just a pain because even something the supplied filter was the wrong one.

im just glad to have her driving again though. new MT's went on yesterday.