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Message: <blockquote data-quote="dirtrider73068" data-source="post: 3235131" data-attributes="member: 44606"><p>4l60 series trannys from GM are not the best. More so the earlier ones, they were well known for blowing the 3-4 clutch pack busting the sunshells, planetary gears. There are better aftermarket upgraded parts. If you do have it rebuilt pay the extra and tell the shop to upgrade parts in it, clutches, sunshell. It will be alot better in the long run. I had the tranny in my 94 rebuilt twice due to it puked at 20k due to a OEM style rebuild. Had another guy build it again and he did it right. 100% new parts and better parts been fine ever since and was a few years ago. I am not easy on the pedal either, I don't tow anything and its never had an issue. My builder told me normal driving change the fluid every 20k miles if towing alot and heavy stuff change it more often.</p></blockquote><p></p>