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1999 Seville Sts
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Discussion Starter #1
Seville goes into gear but doesn't move sometimes it will show in low gear when in Park please can use any advice thanks
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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68,415 Posts
Check the shift cable attachment at the quadrant on top of the transmission - engine compartment right at the firewall about where your gas pedal toes would point. A ball socket.

If it's not that then it's probably an internal transmission fault.

Not sure if the 1999 4T80E had an Internal Mode Switch on the valve body - that's correct model year service manual info. www.alldatadiy.com.
 

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White Diamond '03 DHS (with DTS floor shift)
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86,781 Posts
Have you checked the trans fluid level?
 

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I havea 1999 Cadillac Seville sts recently the car stopped moving forward and showing a code P1520 park / neutral switch circuit.and displays 2gear on the dashboard i replaced park neutral switch and the code still appear and the car did worked normally for about ten minutes please help what's wrong
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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68,415 Posts
Welcome to CF !!! I changed your thread title to be a bit more descriptive of your problems. Your two threads on transmission problems have been merged into one.

Use this to decipher trouble codes and post then and their definitions.
 
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