I have read the 10 pages worth of threads for the shift kit here as well as all the other site forums.

I have a 2005 Sierra 1500 2wd rc/lb w/4l60e and stock torque converter.

I'm looking for a little bit of performance and extended life from the transgo shift kit.

With the HD2 kit do you have to custom tune the pcm to get rid of torque mgmt?

Do you have to go deeper into the transmission than the valve body to install all the parts in the HD2 kit?

Has anyone honed the valve body before putting it back in so it's perfectly flat?

What about using a different valve body core to do all the mods to?

I was thinking of just installing the HD2 kit using the smallest drilled out holes without the corvette servo and replace the plastic covers and parts inside the valve body. I'll get the corvette servo at the same time but not install it right away. I'd plan on working my way up from soft to firm. Should I even be considering this right now? Should I wait until it's out of warranty?

What about the sonnex sure-cure kit for the 4l60e?

TIA

 

no one has any answers?

 

You still need a tune to get rid of TM.
The valvebody is as deep as you go.
I have run a flat file over the valvebody before.

I think it's a good idea to work your way up to a firm shift. Some of which can be done with tuning.


I would do it as soon as you can I don't really see a warranty issue with a shift kit a dealer tech would really have to know his stuff to be able to tell you changed a few springs.

 

can I still use the transgo hd2 shift kit if I don't get a tune or get rid of TM?

 

yes, but the shift kit will exagerate TM....it shifts firm, but TM is even more apparent than before the shift kit. I'm speaking from experience on this...

 

So it wouldn't be worth doing without a pcm tune?

 

TM is, from my understanding, only in the picture at higher RPM. So you can do the shift kit without a tune and it's a nice improvement even just cruising around. But when you lay into it, it's a little weird when it shifts.

 

Does anyone know what is included in the regular shift kit (aka "jr") instead of the HD2 kit?

 

spend the little bit of extra money and get the HD2

 

hye where can you pick the HD2 kit up at and about how much is it???