GM Trans. ID code chart
 

Anyone have a link to a gm id code chart...the white sticker code / case

The information you are looking for has never been made available in a chart for the public from General Motors...

The information is out there, and I also have the information in books from my time at General Motors.

Post your broadcast code and I will reply with the information.

https://cimg9.ibsrv.net/gimg/ls1tech...eb81a8fa6a.jpg

Thank you, 0LPD

OHHHHHHH Just share the whole list

Your Unit is from a two wheel drive 2000 Astro/ Safari Van.

Haaaaaaaaaaaaa! Why am I not surprised! :-)

LOL, the guy posts it on facebook market place as a 4L65E that needs rebuilding for $250 obo. I made an offer based on it being a 4L65E but he didn't respond to any offers. I could make out the id sticker and became suspicious...now I know why he didn't reply. Thank You for your time and effort.

You are most welcome. :-)

The 4L65E units should ONLY hold a higher value to someone whom wishes to keep a rare or valuable vehicle STOCK.

Otherwise do not waste any time or money on a 4L65E unit.

When we rebuild these 4L60E/ 65E/ 70E /75E /78E /79E family of units... they can all share in the same parts upgrades.
So there really is no reason to start with anything more than a plain 4l60E, since it can be upgraded regardless.

Try and pick up a working core for around $200.00 or less.
Also I suspect most of those transmission adds are bull shit in regard to the unit being from a performance vehicle... Plus as I said, It doesn't matter anyway. The only units to avoid, would be corvette transmissions.

Here is what I have from a place I used to work for, it's not 100%

Unfortunately... some of the info here is inaccurate. :-(

I understand that it is not 100% accurate. Help me make it accurate. Point me to a direction that would allow me to acquire the correct information.
A lot of people want to understand what the transmission they have came from. They want to know what to look for when buying a core or good used transmission. How to tell the difference between them. 4L60E's have been out of production since???

You're like the reason I don't go to strip clubs.
I know it's right there in front of me...but I can't have it. Just a tease.

Quit teasing me with this list!! lol

I am truly sorry... I have signed far too many Nondisclosure agreements with General Motors to be able to pass on information here and get away with it. with out suffering a multi-million dollar law suit over information privately shared within the corporation and not publicly share it on LS1TECH.com

I will say that the Info you have is very very close to perfectly providing the correct information to generate a chart.

study the GM Body/ platforms and you will find the answers you are looking for and more. you are soo close that, it is ridiculous!!!

Trans code on 4l60e
 

The second digit refers to the body code "C" being a 2wd truck/suburban/Tahoe. I haven't figured out the others...

You are correct.

However that code has been recycled over again...

One piece case... 1995 C Truck.
Two piece case... 2005 C Truck.

Multiple engines and trim models were used with this code.

It was also used in 1985 for 700R4, but that's a whole nuther Ophra show!!! The 3rd digit is for the engine (I believe) and the code was used for assembly line. That way they knew which unit to put behind what motor. As a transmission builder, there are small subtle changes inside units that have to do with the motor trans and rear gear ratio. That way they will have suitable shift quality and timing for the combo.

A similar truck from 1985 could have used the 5CBM code instead of the 5CBD code...

The Letter "B" in these codes is a Platform package identifier.
Example, in 1985 the "B" in "5CBM" would identify a GMT400 C-Truck 1500 series with either a 5.0L or 5.7L.

It does not specify GMC or Chevrolet, or even the engine RPO/ Model.

Your correct, because hydramatic division didn't care if it was used by Chevrolet or GMC. The concern was that a unit built for a V6 with 3.73 gears didn't get installed into a V8 with 3.08 gears.