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

Tiny
DOUGYDO
  • MEMBER
  • 1993 CHEVROLET 3500
  • 6.2L
  • V8
  • 2WD
  • AUTOMATIC
  • 175,000 MILES
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?
Saturday, July 23rd, 2022 AT 8:46 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,256 POSTS
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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Sunday, July 24th, 2022 AT 10:33 AM
Tiny
DOUGYDO
  • MEMBER
  • 2 POSTS
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?
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Sunday, July 24th, 2022 AT 11:20 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,256 POSTS
I wouldn't because it can have metal inside from the bad transmission, I would try to find one from a diesel.
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Sunday, July 24th, 2022 AT 12:18 PM

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