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Originally Posted by richtazz
The filter service interval is 30k
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Did GM change that with the '04 and up models Rich?
With the '97 - '03 models there has never been any recommended interval for the tranny whether ATF or screen filter at that mileage. It was 50K under severe operation (police & taxi), etc. and 100K for normal as specified in the owner's manual.
I did all of my first pan drops and screen filters around 40K - 50K miles. Never performed any flushes whether full power or fluid exchange.
Dealers recommend or do flushes to make money.