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2003 DHS Deville Trans Fluid Life Monitor

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Normal unless you pull a trailer and get the transmission fluid serious hot.

Agreed, Jim D.

In addition if you do "High Performance" driving you can reduce the trans fluid life. I knocked a percent off in the summer by doing a hard acceleration, high speed run from a stop.

Change the trans fluid at 100K miles if you over-maintain your vehicle like me. [ This is from the Owner's maintenance schedule recommendation for severe use]

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