Question about 1998 Cadillac DeVille

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My 1998 cadillac concours just gave me the code 730

My 1998 cadillac concours just gave me the code 730. gear ratios i think but lloking for answers
abrahamholguin@ymail.com

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This code means there has been excessive slip in the transmission, possibly due to lack of fluid.

Check the fluid level by warming up the car then check the dipstick with the engine still running.

Or....you may have a faulty vehicle speed sensor (VSS) located on the output shaft transmission casing.

Posted on Sep 12, 2009

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Check HERE test procedure.


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How to fix problem codes 730-733 laredo 2009


There is no one fix works for all on these code. Also you have left out the letter and one number of the code I assume these are P0730 and P0733, if so read on.

P0730 CHRYSLER - Incorrect Gear RatioPossible causes- Low transmission fluid level
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Possible that wire could be loose,but i would rather suggest that resistor on the blower might be the problem.The second possible problem could relay, but it would be a rare occurence that relay goes bad.Hope I could help.

Jan 04, 2010 | 1998 Cadillac DeVille

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L have a cad 1998 deville concoursit has a late shift when i take off after it shifts though all the gears its okay an it has a code 730 gear ratio not similar


i have the exact same problem we switched it twice thinking the transmission was bad and well im here trying to find an answer

Sep 10, 2009 | 1998 Cadillac DeVille

1 Answer

Does anyone know what this means Transmission history P O 730


Have you changed tires and wheels to a different size? If so, that will cause a code to come up. The gear ratio is set as a value in your computer. If you change tire sizes that will cause this problem. You can have this recalibrated at your Pontiac dealer. Good luck! Phil

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