How often do you change transmission filter in 2004 Pontiac sunfire
The filter should be changed every-time the tranny is serviced.
Your owners manual says every 50,000 miles if you do as lot of city driving. Here is a link to the owners manual: https://my.gm.com/content/dam/gmownercenter/gmna/dynamic/manuals/2004/pontiac/sunfire/2004_pontiac_sunfire_owners.pdf
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