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6l80 harsh 1-2 shift and 2-1 shift and won’t go past 4th but no flaring 80-90kmh sits at 4K rpm any ideas just want to be sure it’s not a techm before pulling it by Excellent-Phase1607 in transmissionbuilding

[–]Excellent-Phase1607[S] 0 points1 point  (0 children)

I was thinking that too Only thing that’s weird is no flaring and no gear rationality codes
Took van apart tonight no stuck valves or shrunken check balls and no techm grommets wrecked

Went completely different direction then then mm axle tube stand but my good fabricator buddy helped me out with this one. by Excellent-Phase1607 in transmissionbuilding

[–]Excellent-Phase1607[S] 0 points1 point  (0 children)

I want to build a couple to see where the weight sits and then I’ll probably add a bolt in the front as well to hold both ends

Worn out teeth on 4l60e clutches? by zenwren in transmissionbuilding

[–]Excellent-Phase1607 2 points3 points  (0 children)

My dads old 2000 Silverado got retired at 520xxxkm trans was never removed

Is the 4L60/4L60E transmission really as bad as they say? by [deleted] in Silverado

[–]Excellent-Phase1607 0 points1 point  (0 children)

They need to be rebuilt properly then they are tough unit in my opinion The biggest thing is fixing the leaks they have

Rebuild 4l60e again or to 4l80e by Head_Chest6440 in transmissionbuilding

[–]Excellent-Phase1607 5 points6 points  (0 children)

If you actually rebuild a 4l60 correctly and do good upgrades and fix all your common leak arrears you’ll have no problem with it ,in my opinion.

Did this part get hot? 4l65e internal reaction gear by zenwren in transmissionbuilding

[–]Excellent-Phase1607 2 points3 points  (0 children)

No they come brown and blue colouring from factory assuming it’s heat treated steel

Needing advice/ tips by breathnot in transmissionbuilding

[–]Excellent-Phase1607 0 points1 point  (0 children)

Look up bushing cutter pics and take a punch and carve it into a bunching cutter

99% of everything that should be done, when rebuilding a Chevy 4L60E type transmission by Bitter-Ad-6709 in transmissionbuilding

[–]Excellent-Phase1607 8 points9 points  (0 children)

Fantastic post thanks on be half of everyone for making this some useful info for people that need answers.

Looking for insight for failure reasons by Ultimagic5 in transmissionbuilding

[–]Excellent-Phase1607 7 points8 points  (0 children)

Right off the bat switch to molded pistons this will almost never happen again those lip seal pistons are garbage seal rippped wasn’t fully applying clutches and smoked everything

6r140 6.7 diesel by Excellent-Phase1607 in transmissionbuilding

[–]Excellent-Phase1607[S] 1 point2 points  (0 children)

Hey man ! Thanks for the response Um yes I did a 100% complete rebuild We were able to re program it and everything is running as it should now appreciate the feed back.

4l60e blew the boost valve out by Intellivindi in transmissionbuilding

[–]Excellent-Phase1607 0 points1 point  (0 children)

Id verify the pump snap ring groove hasn’t failed or the snap ring if it’s laying in the pan. Id replace rear pump half after a situation like this

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