Swapping a CVT transmission for an automatic

Tiny
FREE2DREAM_2007
  • MEMBER
  • 2003 SATURN ION
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 107,000 MILES
I recently posted a question regarding the repair of the transmission. I apologize, I listed the wrong model (cvt m75). I have a follow up question. The car dealer is suggesting swapping the transmission of my the Saturn ion 3 quad. The transmission in the car is a CVT #VT-20-E. The transmission he is suggesting is a five speed automatic #VT25-E. It was expressed that it "should bolt up with no problem." I have two questions. Would it bolt correctly? Would there be any electrical, sensor, mechanical, or other issues both immediate or down the road?
Thank you.
Thursday, January 19th, 2017 AT 11:08 AM

2 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
That is a CVT transmission out of a Saturn Vue, also very problematic and there has to be different gear ratios because of the tire and vehicle difference. They both are pretty much the same to repair I have repaired both. They should bolt up same engine. But as far as the axles working software in the computers etc. I would say there would be a difference. It is a bad situation you are in I would ask if they would buy the car back and get as far away from the car as you can. If it did not have the CVT transmission I would say stick with the car. Those transmissions were not any good from the day they were new.
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Thursday, January 19th, 2017 AT 1:16 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,443 POSTS
Okay, the VT-20-E and the VT-25-E are basically the same CVT transmission.

The AF23-5 is a 5 speed automatic that was used in the Saturn's.
It is not a bolt in item. You need to change out a bunch of stuff to make it work.

AF23-5 trans and converter from an 03 or 04 Ion sedan (newer will not work)
AF23-5 Transmission computer and engine/trans wiring harness (remove at fuse junction)
AF23-5 Cooler lines
AF23-5 front, rear and drivers side mounts
AF23-5 shifter cable bracket

It is a swap that has been done many times. Google VTi to AF23 transmission swap for more information.
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Thursday, January 19th, 2017 AT 1:32 PM

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