TRNW-2: Identifying 8L series units

[Tod Chretien]

Some really good information right there.

Tod

On 7/9/2025 7:40 AM, Art Landeck via trnw2 wrote:
> Here is the answer AI gives
> bGVnYWN5_bd236d88-3f19-458b-a86a-3ccb9883f862.png
> Identifying GM 8L Transmissions | Shared Grok Conversation 
> <https://grok.com/share/bGVnYWN5_bd236d88-3f19-458b-a86a-3ccb9883f862>
> grok.com 
> <https://grok.com/share/bGVnYWN5_bd236d88-3f19-458b-a86a-3ccb9883f862>
>
> <https://grok.com/share/bGVnYWN5_bd236d88-3f19-458b-a86a-3ccb9883f862>
>
>
>
> Sent from my iPhone
>
>> On Jul 9, 2025, at 10:35 AM, Steve Everett via trnw2 <trnw2 at trnw.net> 
>> wrote:
>>
>> 
>>    I can find nothing in any of the tech I have that helps to 
>> identify a unit,  the tI'ag on the trans has 0XNL in big letters ,  
>> assuming it works like most GM units it is apparently a 2020 unit?  
>> which would be correct in a 2021 vehicle,  I'm sure the XNL would 
>> tell me something? I just can't find anything that tells me what ?
>>
>>    I've agreed to work part time , 3 days a week at an Aamco here in 
>> the Metro area,  and this is a stock unit they somehow ended up 
>> with,  another builder built it and had left two thrust bearings out 
>> of it, and had at least one of the snap rings indexed incorrectly, 
>> but when it get it all back together I need to make note of what 
>> vehicles it will fit in ?   it has a brand new GM valvebody on it 
>> that they don't remember buying ?
>>
>>    Steve
>>
>> On Wed, Jul 9, 2025 at 9:56 AM pat schulte <zzyzxpat at gmail.com> wrote:
>>
>>     I know that the 8L45/50s I have seen do not use a dipstick and
>>     the fluid check is in the pan, but I think the very late 90s have
>>     gone that way as well. Not a stupid question, I have wondered
>>     this myself.
>>
>>     On Wed, Jul 9, 2025 at 6:32 AM Steve Everett via trnw2
>>     <trnw2 at trnw.net> wrote:
>>
>>         This is probably a stupid question, does anyone know a way to
>>         tell if an 8L is a 45,50 , or 90 by looking at the outside
>>         tag ?   similar to how we identify the 6L's ?  I'm going
>>         through a unit someone built to make sure its correct, and
>>         was told it came from a 2021 V6 camaro, which according to
>>         what I looked up should be a 8L45, but its not
>>
>>            I've built 6 or 7 of these, but haven't figured out how to
>>         tell them apart yet
>>
>>            Steve
>>         This message was sent from the TRNW Technical Discussion
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>>         TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
>>
>>
>>
>>     -- 
>>     Pat Schulte
>>     AAMCO Transmissions
>>     Temecula, Ca.
>>
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>
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-- 
Best Regards,
Tod Chretien
TRNW Inc.
https://www.trnw.net
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