how to improve gu auto gearbox

[my third 256]

just found this click on the link
http://www.automatictransmission.com...sp?NewsId=8169
sounds like a good idear dont know cost though
stephen

[Chaz]

Make sure you’re sitting down when you ring for a quote.

Most of us just change the 12 Ohm line pressure dropping resistor for a 1K or 2K 20W resistor which improves shifts for about $5.

[Maxhead]

Make sure you’re sitting down when you ring for a quote.

Most of us just change the 12 Ohm line pressure dropping resistor for a 1K or 2K 20W resistor which improves shifts for about $5.

Agree with above. This little mod is a must in my book, no slip in gear changes and the box would probably stay cooler. I've gone with1k and suits my needs. Theres a few variances of resistors you can use.
Chaz, I believe you've done a diagram on how to wire it up??

[johno1938]

i had a slight sudder going into o/d
changed oil now ok
does this line pressure mod work on 06 3lt
will it effect o/d shifting in & out on h?way {very annoying }
cheers

[YNOT]

I think this is one of Chaz's diagrams. This circuit lets you switch between the factory 12ohm resistor and (in this case) 1012ohm.



Tony

[Chaz]

I think this is one of Chaz's diagrams. This circuit lets you switch between the factory 12ohm resistor and (in this case) 1012ohm.



Tony

Yep, that’s the one Tony. I’m still using that setup and have found it useful when doing a lot of low range work. Some times it just shifts too hard with the 1K resistor in circuit, so switching back to the factory 12 ohm job makes it a lot smoother.

[boggy2006]

hi, does this mod apply to the GQ as well?

[YNOT]

Yes it does.

Tony

[boggy2006]

looks interesting, where is the TCU located and is there a connector on pins 1&2 already with the 12 ohm resistor across them or is it something that needs to be added?
Many thanks

[Chaz]

looks interesting, where is the TCU located and is there a connector on pins 1&2 already with the 12 ohm resistor across them or is it something that needs to be added?
Many thanks

Boggy2006,

You don’t need to access the TCU for this mod. Both wires are the 2 that go to the plug for the voltage dropping resistor.
The TCU is behind the passenger side kick panel.