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so nobody has had issues with the 6l80

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Old 08-21-2013, 11:45 AM
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Default so nobody has had issues with the 6l80

no posting issues or just not having them
Old 08-21-2013, 11:53 AM
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remember all the issues i was having with my black truck back in 08-09? wouldnt shift when on the bottle... thats the only issue ive ever seen out of one, but then again im not around them much....
Old 08-21-2013, 12:28 PM
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I probobly dont make enough power to make one act up lol.
Old 08-21-2013, 01:49 PM
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My buddy messed up his 2nd 6l80 first trans the converter messed up got it replaced with a new trans 0 miles...and now he fried the new one again his 2-3 is messed up revs high then shifts real hard we swapped the converter for original and still same thing.. Also he has his circle d 3600 single disk for sale asking 300 bucks as is working or not just incase anyone is interested

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Old 08-21-2013, 03:17 PM
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I like where this is heading Alton , in for info . I hear more positive than bad on the 6speed , I hope that's the case
Old 08-21-2013, 03:41 PM
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Originally Posted by GMCSIERRA5.3
My buddy messed up his 2nd 6l80 first trans the converter messed up got it replaced and also swapped trans and now he fried another on 2-3 is messed up revs high then shifts real hard we swapped the converter for original and still same thing.. Also he has his circle d 3600 single disk for sale asking 300 bucks as is working or not
Old 08-21-2013, 03:50 PM
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the issues many ppl have with the 6l80 and 6l90 is many tuners haven't learned how to properly learn how to tune them. You can not tune them like a typical 4 speed trans. There are tables that need adjusted and tables you don't mess with. Probably 2 of the best transmissions to be able to play with once you know what you are doing. The 6l90 in the Zl1 and CTSV are incredible where you don't even need a converter if you know what tables to play with.
Old 08-21-2013, 04:28 PM
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well my 1st one was converter and electronics....now since yesterday the 2nd one seems like after cruising down the interstate and getting off a ramp behind a couple of trucks,when I let off the brake to ease forward it felt like maybe gear down shifted hard which it should have already been in 1st gear while I was setting there...runs great on the hiway but im very leary every time 1 of my trannys acts up it wont be long to replacement....this one has been flawless for say 15k miles and it was a new stock unit with converter...40k cooler runs 150 or lower all the time and hasn't been to a strip and only pulled a handful of trailers...just my damn luck
Old 08-21-2013, 04:33 PM
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the 6spds usually don't go into 1st unless in a sport or tow haul mode. typical street driving they are usually in 2nd gear for starting and coming to a stop
Old 08-21-2013, 07:07 PM
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I love the acceleration in tow/haul , but hate slowing down in T/H as it has a hard/abrupt down shift when coming to a stop at slow speeds , def needs some fine tuning to tweak her a bit .

Is this what your feeling Alton ?

Does your '11 with the TVS 1900 have a 6 speed and if so how is it doing ?


Quick Reply: so nobody has had issues with the 6l80



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