6L80/90e's How they work

[XLR8NSS]

I ordered a copy of the transmission(6L90E) manual and a set of service manuals for my truck('07 GMC 2500HD) from the link above. They should be here on Monday, can't wait to take a look.

[gmh308]

We have been using Helm Manuals for years. It is the definitive source for Theory of Operation. Beware, it is Engineering level reading. Those books are not for the faint of heart nor those with ADD!

g

Great to hear. I have the opposite of ADD (whatever that is) when it comes to interesting stuff like that.

Yes, engineering/adavanced level... pre-requisite is understanding of general auto trans concepts/assembly.

Any lack of detail would be a disappointment. And as the 6L80/90 run on black art, then a little quantum physics wont hurt either. Of course I dont think that being in two gears at the same time would be a simple curiosity like duality .

Areas like having to factor in the inertia of the powertrain and whole vehicle is an interesting new element to mobility using clutch to clutch trans's.

One of my other curiosities at present is how crank angle error is determined and what total error it can deal with. No one at GM can seem to come up with a response. Maybe I will post a view of how it is determined and see what the debate uncovers.

In my search though, I did gain a very good insight into virtual fuel sensing for E85 etc fuels and how it works.

Have a good weekend all!

[joecar]

To say that this stuff is "interesting" is an understatement...!!!

[gmh308]

To say that this stuff is "interesting" is an understatement...!!!

Yes I tend to understate. I did grow up in Oz remember. You know we are prone to conservatism.

Of course if I grew up elsewhere, I might say that is "totally mind blowingly f__king fantastically informative" But that wouldn't be me.

[MN C5]

I ordered a copy of the transmission(6L90E) manual and a set of service manuals for my truck('07 GMC 2500HD) from the link above. They should be here on Monday, can't wait to take a look.

I'll split the cost with you if you send it my way when you've read it. BTW is the blower on your truck yet or are you waiting for next year

[duramaximizer]

I'll split the cost with you if you send it my way when you've read it. BTW is the blower on your truck yet or are you waiting for next year

Divide by 3 if you want to send to to me when your done with it.

Great to hear. I have the opposite of ADD (whatever that is) when it comes to interesting stuff like that.



Any lack of detail would be a disappointment. And as the 6L80/90 run on black art, then a little quantum physics wont hurt either. Of course I dont think that being in two gears at the same time would be a simple curiosity like duality .

Areas like having to factor in the inertia of the powertrain and whole vehicle is an interesting new element to mobility using clutch to clutch trans's.

One of my other curiosities at present is how crank angle error is determined and what total error it can deal with. No one at GM can seem to come up with a response. Maybe I will post a view of how it is determined and see what the debate uncovers.

In my search though, I did gain a very good insight into virtual fuel sensing for E85 etc fuels and how it works.

Have a good weekend all!

I have the same Anti ADD when it comes to interesting stuff and things that matter.

I had a guy explain to me how the E85 works. It is very simple and very complex all in the same sentence. Very cool and interesting.

Do they have these helms manuals for the Ally?

[gmh308]

I had a guy explain to me how the E85 works. It is very simple and very complex all in the same sentence. Very cool and interesting.

Amazingly simple. So simple they could have done it in the first place. Just took some creative types to get together and basically replace a $600 sensor with something that is "free", apart from the R&D cost. (not to oversimplify the VFS, it uses some complex tech, as you say, in a new and additional way.)

[ntae]

gmh308 when do you think we will see it in our holden's

Amazingly simple. So simple they could have done it in the first place. Just took some creative types to get together and basically replace a $600 sensor with something that is "free", apart from the R&D cost. (not to oversimplify the VFS, it uses some complex tech, as you say, in a new and additional way.)

[gmh308]

gmh308 when do you think we will see it in our holden's

My guess is sometime in the next 12 months at the outside. They could do it now, and no doubt have test cars on the road, but it is either program funding/engineering resources, or marketing does not feel the time is right, that may be delaying earlier introduction. Maybe now that the delayed Sportwagon is launched, other programs like E85 will get more focus.

[XLR8NSS]

I'll split the cost with you if you send it my way when you've read it. BTW is the blower on your truck yet or are you waiting for next year

Sounds like it's complicated, might take me a while to get through it. lol

Blower was ALMOST on this weekend but, was missing an important part and need my truck on Monday so I slapped the stock intake back on. I think on Tuesday it'll get done now.