2 days ago my trans started slipping out of no where wen i pulled out the drive on 2002 Buick LeSabre

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so i turned it off then sat then started bacc up n it took off drove for a few then started slipping again so i changed the filter/screen put all new fluid n it drove for a whole day then started doin it again but if i turn it off then start it bacc up it drives for a few then does it again does this mean my trans is gone
(2) Answers
Does it slip or is it jerking into gears? If it jerks into gear theres a commor problem with the 4T65E trans that causes this. The pressure control soleniod is more then likely at fault if you have this trans.
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