4l60e gone again.... what to do on rebuild options

Ive searched endlessly on this transmission. My 03 Silverado 1500 2wd. Thinking of rebuilding it myself with upgrades. Lost my 2nd and 4th gears while heading out camping. Transmission has 30K on a rebuild from a local trans shop. Warranty is up on Friday, what a coincidence! 2yrs unlimited mileage. Do I allow this shop to make it right, assuming they will rebuild/fix my failing transmission? Do I attempt my own rebuild? I have another shop in mind but the money spent there could be the money building me a nice solid unit on my own.

Sounds like u broke ur 2-4 band. If u do rebuild it go with a wide kevlar 2-4 band with hardened anchor. Beast sunshell and a z-pack. Vet second. Ull love this combo and should last u a while

If its under warranty take it in and atleast see if they will cover it. No point in spending money not needed. I'd suggest you have some kind of basic knowledge if you want to rebuild it your self. It's not to bad just alot of small things

Yeah, I'll take it there in the am, cross my fingers I guess. Dont have any money now anyway so it will have to sit with the trans out for now. I did put in the vette servo about one year ago. Much better 1-2 shifts for sure and thats what I wanted. I tow on occasion to the dunes and cinders. Idk what combo if I do rebuild, thinking transgo shift kit stage 2, New master kit (unsure of brand), kevlar band, beast sunshell and z-pack, ac delco long servo pin, sonnax pinless forward accumulator piston kit. Any opinions/help/insight on this setup....?

dropped it off at the trans shop that rebuilt it today, they will tear into it and let me know tomorrow what they think. He said the heat strip hit 270 on the temp but he didnt think the trans lines were clogged because the converter had no heat marks on it. The fluid was burned smelling though. I really hope they hold to their warranty and make this good..........

Take it back. It lasted that long. Repair should be covered, no? Worry about future fails in the future.

Get it rebuilt take it out and sell it. Use the money to fund an 80e swap

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Originally Posted by kerrige

get it rebuilt take it out and sell it. Use the money to fund an 80e swap

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ditto

ok, just got it back today. They told me the reverse drum broke and the band broke. They fixed the issues and gave me another torque converter. Hope it works and the if/when it fails again, Ill rebuild it next time like gasguzzer said-in the future.

Figured it was the band and drum

There is a reverse-input drum and a 2-4 band. Hard to see how either would break but it's good that it works.

ok, put trans in last night. Truck shifts into reverse, first, and second just fine, however it wont upshift into third at all or fourth. I called the trans shop that fixed it under warranty and he told me to drop the pan and replace the dr side shift cylinoid. Does this sound right? I looked at the 4l60e diagnosis list and it says if there is no 3rd or 4th that the 3-4 clutchs are no good. Any opinions. I would take the truck down but they are across town and a tow would be some $. Btw, there are no check engine codes. Need some help from those who know, thanks in advance.

Could try and see if that fixes it. They do go out sometimes.

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Originally Posted by kerrige

Get it rebuilt take it out and sell it. Use the money to fund an 80e swap

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+1 I'm doing mine now.

update,
with only first and second gear, I drove it one last time to circle K on the corner, still no 3rd or 4th. When I left for home, I felt it hit 3rd....so I kept driving and to my surprise, it began to work just fine. All gears, tow mode, good on all. About 200 - 300 miles since build and it feels strong. Maybe the shift cyliniod was hanging up, idk. Just glad I didnt have to r&r again. Thanks for all the input, suggestions.

A few things could have happened there. the valves for the shift solenoids are bad about getting hung if they just wiped the valve body down in the parts washer and blew it out. after a few strokes of the solenoid it could have built enough pressure to break loose. Just keep an eye on it for the next couple of days to be sure its ok. and dont forget to check the fluid again after a day or two just to be sure!

You are going to have nothing but problems with that tranny since you fragged the band and reverse drum. Where do you think all those parts and pieces went? ALL THROUGH YOUR TRANNY! Your solenoids are hanging up because there is shit in your fluid that is not suppose to be there. If that fluid was burnt just like you mentioned then your clutches are burnt as well. Better start saving up for that rebuild kit and for gods sake find someone that has some experience/specialized tools with the 4l60e so you dont get to "practice" on yours all by yourself! Not trying to down you....but if you want a dependable tranny its best not to learn on your own tranny with no guidance. You wont know if you are making a mistake until AFTER you install the tranny and it burns up immediately or has problems.

By all means learn the 4l60e....then you can help someone out down the road or rebuild yours next time around....125K+ miles later if its built right. Mine has 135k+ on its first rebuild.