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[laney101]

Tranmission control module is it located behind drovers kickpanel?? As i pulled a small module out but doesnt seem like a ecu (on car im breaking)

Also ive heard 3.0 tcms are better whats the reson behind this is it software.

Guessing you cant fit a 3.0 tcm to a 3.2 omega

[Doctor Gollum]

There's potentially three things there...

1. CL/alarm ecu... Every car.
2. Gearbox ecu... Every auto.
3. Part of the Bose set up... Every Bose equipped car.

Gearbox ecu should be universal, but may take time to settle in.

Also search the part number from each item and something on the interweb should identify it

[laney101]

Cheers fella yes the small box i pulled out looks note like a alrm module not a ecu so probobly that

[TheBoy]

TCM is higher up. But they are not interchangeable between types.  A 2.5/3.0 will use a GS820, a 2.6/3.2 will use a GS8211.  The hardware is different.

Additionally, between the ones using the same hardware, there are config differences, so that needs to be programmed in.

[laney101]

Cheers fella good to know thankyou

[cam.in.head]

thats a shame as it would've been good to fit a different one to my 2.6 to get rid of the high change points.

[Doctor Gollum]

Disconnect the battery for an hour or so, and then drive it gently.

It only holds the gears because it thinks that's how you want to drive

[cam.in.head]

someone else must be driving my car when im not around then because its not getting its thinking from me !.i did change the gearbox ecu years ago and the other was worse !.
i rarely go above 3000 rpm and its first cold change seems to want to go higher. thought it was a charecteristic of the later cars .my brothers 2.5 changes at much lower revs if you drive it gently.
its a pity you cant alter them like on the old 3 speed 180 box with the vacuum modulator.
at work we have a 17 plate navara auto that has excellent change points.if you drive it gently you can get it in 4th by 25mph ish !

[Doctor Gollum]

That's 17 years newer programming, probably a five, six or seven speed box too

They're programmed in the engine ecu to hold revs when cold in order to heat the cats. Even the manuals do a variation of this. On my 26 mile commute, half the fuel is used in the first third of the distance.

Get used to it or change cars.

[Keith ABS]

 As DG said.
My 24V Carlton Diamond estate used to hold the change point to higher revs when cold

[TheBoy]

A 2.6 suffers 2 issues around change points.

The TCM software is shite. Not a patch on what is available for all other engines except the equally bad 3.2.

The engine lacks power, so needs to rev a fair bit harder than a 3.2

[cam.in.head]

thankyou for that explanation . its a pity because the 2.5 changes nice and so do the nice early 180 boxes in other gm's albeit purely hydraulic .its my only issue with the car realy but wont be changing it !.
it is purely an observation and was saying it would be nice if it changed differently thats all.
i have no issues with power thou,mine is plenty powerfull enough for me .dont think ive ever floored it once ,so plenty of reserve if needed.thats not what driving is about to me

[TheBoy]

thankyou for that explanation . its a pity because the 2.5 changes nice and so do the nice early 180 boxes in other gm's albeit purely hydraulic .its my only issue with the car realy but wont be changing it !.
it is purely an observation and was saying it would be nice if it changed differently thats all.
i have no issues with power thou,mine is plenty powerfull enough for me .dont think ive ever floored it once ,so plenty of reserve if needed.thats not what driving is about to me

Even if you don't thrash it, its what helps make the 3.2 a much more effortless drive than the 2.6, as it does seem to need to rev to hard with gentle acceleration.

But the 2.6 auto is not that bad to consider changing it .  Its just a shame they are a backwards step from the 2.5/3.0 that the newer engines replaced