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The service engine light came on in my 2001 Deville and after checking the computer codes, code PO741 came up indicating "TCC System Stuck Off" . However, I can't find anything about this system in the forum or what this code means. Could someone please enlighten me? Thanks

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P0741 is the code for excessive slippage in the torque converter. If the rate of the slippage is greater than 200 RPM, the code will set. The most likely culprit (unless another code is also set) is the seals in the torque converter apply circuit. The fix requires removal of the transmission, seal replacement and the torque converter must be replaced. About $1200 from a transmission shop.

'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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