transmission issue?

2012 HYUNDAI GENESIS
185,000 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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DIVIDES
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  • 903 POSTS
not sure why they made a 6 speed and an 8 speed transmission on these cars, one is the Z 6 speed, if I decide to change the transmission on it, which is the 8 speed, does it need programming?
Oct 16, 2025 at 7:15 AM
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STEVE W.
  • ✓Experienced Mechanic
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The two transmissions are not interchangeable. They use different wiring harnesses and programming as well as other pieces like the shift assembly, and more that are not compatible.
Oct 16, 2025 at 9:30 AM
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BHAMDOC1973
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Ya i know. Am asking if i changed it with another used one that is the ssme type will i need any type of primary grogramming?
Oct 16, 2025 at 9:46 AM
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BHAMDOC1973
  • MEMBER
  • 2,007 POSTS
Ya i know. If i install same type will it need programming?
Oct 16, 2025 at 9:47 AM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,391 POSTS
OK, if you swap for the same version it still needs programming because the VIN sets a lot of parameters. However you can do the re-learn without a scan tool. Disconnecting the power erases the learned items. Then follow the directions attached to teach the new unit.
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Oct 16, 2025 at 10:18 AM
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