2001 s10 blazer auto transmission wont go in reverse and makes grinding noise in park,reverse and neutral.drive gears seem fine.need help please finding what kind of transmission is it and what went wrong.thank you
You have a 4L60E whick is controled by your ECM. It sounds like you need and new transmission, the sun gear in it has failed and is the weak point on this transmission.
When you get a new transmission have them to a corvette servo upgrade. The part is only $45.00 and the shop should know about the upgrade. It will make your truck shift a lot more firmer but last longer.
Here is a write up http://s-series.org/component/option,com_tech_article/Itemid,/item,6/task,item/
Good luck and hope this helps
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