How-To Remove Allison 1000 Transmission

Here is a short run thru of how to remove an Allison 1000 5-Speed transmission from a 2003 GMC Duramax. This process is the same for all 2001-2005 5-Speed trucks. While this process varies for 2005-present 6-Speed trucks.
Steps:
-Remove Starter, tie to frame rail
-Pull off fan (Unless you have a 36mm box end wrench)
-Remove torque converter bolts (x6)
-Remove rear drive shaft
-Remove front drive shaft
-Remove Transmission cross member
-Un-plug all T-case wiring
-Remove T-case breather
-Remove T-case
-Remove all Trans wiring
-Remove fuel line brackets
-Remove exhaust v-band
-Remove Trans cooler lines
-Remove all bell housing bolts
-Remove transmission
Music was provided by NoCopyrightSounds
Alan Walker - Fade [NCS Release]
Song - goo.gl/gRMuAi
Artist - goo.gl/vVlgHJ
Any background music is credited to its original owner.
Disclaimer - Some information in this video may be incorrect or not manufacturer recommended. I am not responsible for any problems or damage you encounter. Watch and follow this video at your own risk.

[@waynemoser3787]

That techno music made the video kind of hard to watch.

[@donaldjhillbish3815]

One of the Best Videos I saw on removal! Great Job..THANKS!!!

[@MintyFreshGarage]

Wow, such information, much helpfulness

[@zachguenther2567]

Thanks for the awesome video!

[@Charley_Buehner]

Probably would have been a pretty good video if Helen Keller wasn't running the sound board :-p

[@TruckMaster]

Thanks for the video very informative. Any difference on a six speed Allison LBZ? Is the process generally the same?

[@RHLAMBOFGOD]

what did u switch it with i know i need to do the same

[@psicopatalucifer]

Nice job.!

[@josemacias8380]

You know what I would say is the best video ever

[@joegislason]

Good information

[@thevoxdeus]

Music is super distracting. Doubly so when you also have the music playing in the shop.

[@techguylos213]

Brakcets. Diesel lines. Shift cable etc.... Could have been popped off, pushed back instead of removed. Faster install

[@bouchee2007]

nice video, sweet tunes playing too

[@mrsigala7553]

what’s the cost for all this job?

[@AandWProductions]

Torque converter bolts should be 15mm head and the balancer bolt 32mm. That is what my 05 LLY is.

[@stevezphone]

Love the video but very difficult to watch with the music.

[@taylerlessard8066]

How do you remove the casing behind the fly wheel? Mines cracked

[@andrewlittle760]

This seems stupid to ask but is the transmission only being held up by the engine? Or is it attached to something else?

[@brendanleary2422]

torque converter is 15mm bolts. nice video tho

[@jackdaniels2657]

Isnt there an access plug for the converter bolts? I know ford nd dodge usually have access plugs.