Today's news that isn't news:

"Tristan" (casselts) 06/07/2019 at 02:22 • Filed to: None

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4L80E: REALLY REALLY FUGGIN HEAVY.

I’m going to bed now.

shop-teacher > Tristan 06/07/2019 at 07:41

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Wait, what? Why did a 4L80 need to come out????

I expect that with a 4L60. Although my 4L65 has yet to do me wrong in 13 years *knocks wood*

Tristan > shop-teacher 06/07/2019 at 10:30

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I’m replacing the slobbering  rear main seal!

Outlander Engine's Dimensional Emporium > shop-teacher 06/07/2019 at 12:18

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4l80e’s can go anywhere from 150k to 250k miles.  Mine just started shifting hard intermittently at 165k.  Might get another 30k out of it.

shop-teacher > Tristan 06/07/2019 at 13:05

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Riiiiiiiiight! I forgot about that. 

shop-teacher > Outlander Engine's Dimensional Emporium 06/07/2019 at 13:08

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142k and counting on my 4L65. *Knocks wood again*

Tristan > Outlander Engine's Dimensional Emporium 06/07/2019 at 13:44

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I’m at 155k miles. The truck came without a brake controller and without a single scratch on the receiver hitch at 130k miles, so I’m thinking it led a pretty easy life before I got it. I’m really hoping the trans lasts another 100k. So far, my luck with Chevies has gone like this: as long as they’re neglected, they’ll have issues but they’ll still be reliable. Once you start fixing stuff, they fall the fuck apart. Here’s hoping I can break that cycle with this ‘ Burban.

Tristan > shop-teacher 06/07/2019 at 13:48

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I was trying to diagnose a rattle the other day and when I crawled underneath to listen while it was running I noticed the puddle of oil had grown to about 4" across in the < 5 minutes it was running. I also figured the noise was probably a cracked flex plate, but it turned out to just be 2 loose torque converter bolts (at least that’s the only issue I found while disassembling).

Tristan > shop-teacher 06/07/2019 at 13:50

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It seems like GMT800s didn’t  have anywhere near the issues with the 4L6xE as the GMT400s did. I still have trust issues with half-ton GM trucks, though.

shop-teacher > Tristan 06/07/2019 at 15:20

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Definitely time to fix that.

shop-teacher > Tristan 06/07/2019 at 15:21

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Mine has been incredibly reliable. The only failure I've ever had since new, was last year when I popped a brake line due to rust.

Tristan > shop-teacher 06/07/2019 at 16:44

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After spending a bunch of time under this thing lately, I can totally see how they rust so badly in salty conditions. There's not much rust prevention in use on these!

shop-teacher > Tristan 06/07/2019 at 16:48

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No. No there isn't.