Sonnax GM 6L80 Series Transmission Upgrades & Repairs

[@richardteresacricheducatio3542]

Well said Greg

[@GregHuston]

I upgraded my 4L65E with your kit and it's been taking a beating for 2 years with no issues. Looking at a truck with this trans and will probably upgrade!

[@sonnax]

Awesome, so glad to hear that Greg! Thanks so much the great feedback, we really appreciate it!

[@judee00]

Bellows falls Vermont! Good! If I ever need parts for my 6l90e, I'm definitely going there! NH, ME and VT strong!

[@CalaisRider]

Very good presentation. I'm running a VE Commodore Calais-V with an LS3 416ci stroker that has been built from scratch with fully forged internals and set up to run comfortably at 7,200 hence a bit of stress on my 6L80E trans. Not big power compared to forced induction now days but gets worked hard. I'm on my second brand new trans and have also had 2 rebuilds as well and I over-service it, plus has a couple of extra dedicated fan mount coolers/radiators to keep temps down. It does a fair bit of high speed enduro work. Looks like I may be getting a fair diversity of products from Sonax - only prob is that I live in Brisbane Australia. Thanks for taking the time and posting.😁

[@simonhardgrave4568]

Ya want to talk to CircleD

[@nickonickster1]

Sonnax is the way to go!

[@sonnax]

Thanks so much for your kind words, Nicolas! We really appreciate your support.

[@nickonickster1]

@@sonnax [e-mail]

[@sampanzarella7876]

Nice product, thanks for making our job easier!

[@sonnax]

Sam Panzarella Thanks, Sam! We really appreciate your support and positive feedback!

[@DenisDamulira23]

was debating an auto...but with your product upgrades,i don't have to worry so much

[@PlymouthBarracudaV8Hemi]

Does 6L45-6L90-ZIP already include the 6L80E-LB1 ?

[@sonnax]

No, you can view all contents included in the Zip Kit right here on our website: www.sonnax.com/parts/3505-zip-kit. Thanks for reaching out, and have a great day!

[@wilfredomarquez2879]

Thanks you Guys for the information tips like that we needed to Makes are jobs easier thanks again

[@sonnax]

You're very welcome! Thanks for the great feedback!

[@jasonnellis3566]

hello do you have high performance servo for gm 6L80. thnx

[@sonnax]

At this time Sonnax does not offer any 6L80 servos. You can check out all the repairs and upgrades we do carry here: www.sonnax.com/units/301-6l80. Thanks for your interest in Sonnax parts!

[@corymacdonald383]

I have a 2015 sierra 5.3 with a six speed 135k kms. The truck has always had a whinging noise. I hear the torque converter fails on these trucks. Should I get it replaced before it fails?

[@sonnax]

Hi Cory, our product support team would be happy to help you. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@GWRus77]

Is the boost valve in the zip kit the same as the line pressure booster kit? It appears the zip kit doesn't have the upgraded spring. Can that spring be purchased separately?

[@sonnax]

Hi GWRus77, Zip Kits are designed to restore OE operation and pressure curves. The line booster on the other hand is meant as a performance upgrade for firmer-than-OE shifts, and thus uses an increased ratio boost valve assembly and elevated PR valve spring. So no, these are not the same. You can certainly use the two kits together, but you would need to purchase both and just disregard the boost valve assembly in the Zip Kit. Hope that helps, thanks!

[@FairladyS130]

Can the line pressure booster kit be fitted with the transmission still in the car?

[@sonnax]

Check out this video which dives into the details: kzbin.info/www/bejne/nHPXaqZsedOkjqs&lc=UgxulKOpNoOE5Fbae4p4AaABAg. If you still have questions, feel free to reach out to our tech team. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@Posi12Bolt]

I'm in the process of installing your zip kit and upgraded apply piston in my 6l80, so far everything has been straight forward. Need a little clarification on step 1a. of the zip kit. "Drop one Sonnax 1/8" aluminum checkball into OE orificed cup plug. Drive checkball into cup plug with appropriately sized punch. Stake cup plug to prevent checkball displacement." boring the new oriface is no problem, and I understand driving the checkball down into the cup... but what is meant by "stake cup plug"? What am I staking it with? What exactly am I supposed to do here? thanks in advance.

[@sonnax]

Thank you for your question. Our tech team would be happy to help. They can be reached directly via email at [e-mail], or by phone at [phone]. Thanks again, and have a great day!

[@fm-lq7rn]

Posi12Bolt did the trans need to be pulled for the zip kit

[@walan1202]

I bought a 2018 LT1 Gen V with a 6L80 4x4 Z-71 to go in a 2x4 S-10. What is needed to convert the transmission to 2x4? I am being told I need to change the shaft out to the 2x4 shaft!

[@sonnax]

Hi Alan, our product support team is available to help with any questions related to Sonnax products (www.sonnax.com/product_support). For general tech questions, we'd recommend contacting our friends at ATSG (www.atsg.us/) or ATRA (www.atra.com/) for assistance. Thank you!

[@walan1202]

I have a 6l80 4x4 transmission that I want to install in a 2 wd truck! Will it cause me any problems doing this!

[@sonnax]

Hi Alan, our tech team is available to help with any questions related to Sonnax products, but for general tech questions, we'd recommend contacting our friends at ATSG (www.atsg.us/) or ATRA (www.atra.com/) for assistance. Thanks for reaching out!

[@johnkendall9831]

Do you need to have torque converter removed

[@sonnax]

Hi John, our tech team would be happy to help you with any build questions. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@20tea]

Not only removed, but should be replaced with an updated torque converter on the 6l80. The torque converter is the Achilles heel of the transmission. Get that swapped out if it's the stock torque converter before it destroys the transmission!

[@johnkendall9831]

@@20tea Thank you for the advice and also your very important time!!!! Not many left in this world like you!!! Again Thank You!!!!!!

[@diduck6878]

Better converter #1

[@Chief6067]

Can anyone tell me what transmission I have if my truck is a 2014 GMC Sierra 1500 4x4 with a 5.3 engine? And does sonnax make upgrade parts ?

[@sonnax]

Hi, our tech team would be happy to help you. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@20tea]

It may be a 4l60e, but some applications have the 4l80e. I'd call the dealer with a vin# and they'll tell you. Heavier duty applications have the 4l80e or even the 4l90e. If you have the 4l80e, get the 4l90e torque converter or an updated 4l80e torque converter. 4l90e converter is stronger and just mount using the stock 3 bolts and leave to other bolt holes open.

[@roneymarkose1736]

I need this kit how I order this one

[@sonnax]

Happy to help! We sell all of our transmission parts through authorized Sonnax distributors. You can easily find the one nearest you right on our website: www.sonnax.com/distributors. Thanks for reaching out!

[@roneymarkose1736]

@@sonnax middle east saudi Arabia you have distributors

[@sonnax]

@@roneymarkose1736 Our sales team would be happy to help. They can be reached directly via email at [e-mail], or phone at [phone] or [phone].

[@Posi12Bolt]

Just wanted to say thanks, I used all Sonnax upgrade parts when I rebuilt my 6l80 in my Escalade and it works great! Zip kit and piston are nice products! Check it out :-) kzbin.info/www/bejne/pX6nZJ6wo56We5I

[@sonnax]

Awesome! Thank you so much for your support. Glad to hear everything is going well for you. :)

[@9876-e1p]

Get rid of the background music please