What year(s) transmission can I use in this truck?

1993 CHEVROLET 3500
175,000 MILES • 6.2L • V8 • 2WD • AUTOMATIC
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DOUGYDO
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The truck listed above 1 ton with a 6.2 L diesel and a 4L80E automatic transmission. No reverse and no overdrive… Works in the other gears… My question is, if I replace the transmission what years of transmissions can I use?
Jul 23, 2022 at 8:46 AM
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STRAILER
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I believe any 4L80E automatic that has the same electrical connector and pin count will work. Also, the torque converter must be changed out as well because the diesel converter is different than a gas model.

Here are two generic videos to help and how to swap out the transmission in your truck in the diagrams below:

https://youtu.be/ZC7xHVMKLRw

and

https://youtu.be/3vJAojsrfuU

Check out the diagrams (below). Please let us know what happens.
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Jul 24, 2022 at 10:33 AM
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DOUGYDO
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If I remove the transmission from my diesel and replace it with one from a gas motor, can I use the old torque converter in the new transmission?
Jul 24, 2022 at 11:20 AM
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STRAILER
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I wouldn't because it can have metal inside from the bad transmission, I would try to find one from a diesel.
Jul 24, 2022 at 12:18 PM