Service transmission warning

1996 CADILLAC DEVILLE
53,600 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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ESM1980
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I am getting a "service engine soon" and "service transmission" warning on my car. I took it to AutoZone to pull codes, and while I have unfortunately lost the readout, I remember him saying that the code simply said to check transmission wiring. It drives fine, so I don't really know what direction to look in.
Apr 30, 2019 at 11:19 AM
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SCGRANTURISMO
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Hello,

Can you get another readout of the Direct Trouble Codes (DTC)(s) again, please? If we have the DTC's we can give you specific directions on how to fix your vehicle. Please get the DTC's and get back to us.

Thanks,
Alex
2CarPros
May 1, 2019 at 4:54 AM
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ESM1980
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Will try to do so today. Thanks.
May 2, 2019 at 5:42 AM
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STRAILER
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With the key on hold the off and warmer buttons to initiate the code retrieval or use this guide

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what you find. We are interested to see what it is.
May 4, 2019 at 12:40 PM
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ESM1980
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P0717 was the code I'm seeing from the printout last time. Probably will try and run it again today.
May 7, 2019 at 8:15 AM
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STRAILER
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That code is for the turbine shaft speed sensor (trans-axle). here is a the location and institutions on how to change it. Check out the diagrams (below). Please let us know what happens.
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May 7, 2019 at 2:24 PM