Dynamic396

It looks like a '93 case (it's certainly not an '03) that someone converted to a PWM for use in a '97.

mrvedit

Good to have that cleared up.
Now just make sure it also has a '96+ PWM valve body to be sure it will work properly with your LS1 PCM.

Indyjc

iTrader: (1)

Thanks for all the help.
I will get out in the garage prolly Sunday afternoon to pull the pan. Weather has been nice so I've been cleaning up the yard.

Indyjc

iTrader: (1)

The wires are brown and black. Can you see the 3-2 downshift solenoid and the tcc/pwm solenoid?

Indyjc

iTrader: (1)

For whatever reason I can't post the pic I want of the front of the trans I will try again later. Thanks to everyone for their help.

Indyjc

iTrader: (1)

Maybe this is the one

coryforsenate

iTrader: (1)

The two solenoids from the picture from post #24 are, left to right, shift solenoid B (3-4) and shift solenoid A (1-2).

The one on the right of the picture from post #26 is the PWM solenoid and the left one is the 3-2 downshift solenoid.

Here's a picture to help you out. It can be a little confusing because the picture is flipped from what you'll see with the valve body still bolted to the transmission.

Indyjc

iTrader: (1)

thanks coreyforsenate and to everyone who has helped. So I've reread all the post and I believe this is a built trans made from several trans. Pretty sure it will work with my ls1 and lt type converter.

Thanks again

mrvedit

Since the TCC "Feel" and 3-2 downshift solenoids appear to be different, and their pictures match what I see in the ATSG Update manual, I think you have a '96+ valve body which will work fine with an LS1 PCM.
So Yes, you should be good to go and can assume this is "equivalent" to a '97 trans.
Good luck and let us know how it works out.

taz68camaro

Trans is from a Trailblazer SS 4WD 6.0. These are the numbers on it. A tag that reads 8TKD, stamped 618TKDY46803378, 8037J (J?), 24235503. I need to know what I have before I have it reworked. Thanks everyone.

mrvedit

Likely a '08 4L65E/4L70E. It definitely has ISS (Input Speed Sensor) and the new style pump.
I would be interested to know if the valve body does or does not have the 3-2 downshift solenoid and whether it has the Manifold Pressure Switch.
If you are taking the pan off, a picture of the valve body area would help us determine exactly what you have.
Why do you need to know? Is it being rebuilt? By whom?

taz68camaro

WOW! Can't believe I got a reply that quick! this site is the best, I have learned so much! I have a rebuilder that has done a th400 for me and I've referred him to others with no complaints. I have a 496ci mated to that th400 and it is BULLETPROOF! Car runs 9's on motor shifting at 7k. Trans is awesome. For $800 he will go thru it and make it strong enough to withstand the streetable hp levels (420 rwhp) I am building this 08 TBSS LS2 for. This includes converting the trans from AWD to 2WD and he will give me a TC from a pickup. I'd like to ask a couple questions if you don't mind. I have the stock TC from the TBSS but Circle D and Comp Cams both suggested a stall speed around 2800-3000 based on the cam I'm using. From this site and others, I read that a TC from the 6cyl TBSS would give me a stall around 2800. Would this work for me at that hp level? Or should I stick with the TC that came with the motor/trans or go with the TC from a pickup?

GMCSIERRA5.3

I would not recommend the i6 trailblazer converter also known as a VJ..they have too many problems with bearings coming apart in them..i would highly recommend circle d 278mm 3000-3200..works dam good for the price

taz68camaro

Advice very well taken...thanks. I'm leaning towards the Circle D.

Indyjc

iTrader: (1)

Trans goes to the shop tomorrow for a rebuild. Excited to get back to work on the car. I'll keep everyone posted on the progress.

Thanks again for all the help. I'm sure I'll have more questions before its all done.