TRNW-2: 8L90 Valve Body Interchange

tucker tuckertrans.com tucker at tuckertrans.com
Tue Apr 15 15:56:20 PDT 2025


Group,

I have about 5 new 8L90 valve bodies in stock (GM).  The current one I need 2021 Express 2500 with a 4.3 liter engine I don't have it.  It is suppose to take 19435580/24065873.  The valve body is worn out all over AFL, Acc , etc and a solenoid circuit code.  So what I am wondering if anyone has tried install say a 2019 up valve body that wasn't the exact part number GM recommends?  Is there some sort of way to decide if you can interchange them?  I don't know it might not even take the programming if it isn't correct.  Any ideas?

Dan Tucker
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