t43 checsum error

[b18cls1]

when i try to flash my tcm i get a checsumerror at the verry end,it will erase the tune then flash all kb of the tune then get the checksum error??

any ideas?

[GMPX]

Well, first question, has programming every worked before on this vehicle?

The last change we made to the T43 programming procedures was back in April 2008, when you do think the last time you updated the software was?

Cheers,
Ross

P.S - What sort of vehicle is this?

[b18cls1]

No i just tried, it has had a tranny tune on it before, the car is a 08 g8 gt and im using 7.5.5 build 74, also is there a way to apply a pct of tq management, there is supposed to have 50pct tq management on this tune pulled from the car

[b18cls1]

anyone have any ideas?

[GMPX]

Sorry to ask the other obvious question, has the V2 firmware been kept up to date too?

With the error at the end, is the trans stuck in limp mode or does it actually appear to be working ok?

Cheers,
Ross

[GTPprix]

I sent you a PM I might have an idea as to whats going on, let me know if that is the case.

[b18cls1]

the v2 firmware is updated and still no go, the whole tune flashes back in but has checksum error at the end, i even tried to flash the tune unmodified back in and still get the checsum error

[GMPX]

So is the trans stuck in limp mode?

[b18cls1]

i loaded a stock tune from another car in the trans, but cant get the orig tune back in

[b18cls1]

i geuss this is a vms tune, from what i hear.