error reading TCM

[98TJ]

when i click on "read calibration" it attempts to read the TCM but then i get an error stating "Bootloader rejected". Possible reason: "engine speed or vehicle speed not zero" or "a flash memory fault has been detected.

i haven't done any tuning get. i just read the PCM and backed-up the original tune.

any ideas? Thank you.


Rick

[Tordne]

I'll start with the obvious question: Did you select the correct controller type to read? If it was on 99+ LS1 for example it would not have worked.

[98TJ]

i chose the transmission 4/5 spd T42 TCM controller. So far i have been able to read the ECM (T 40) but not the TCM. It's a 2006 LH6.
I know it can't be the speed issue b/c the vehicle was not moving. i'm not sure what the flash memory fault could be. thanks for any help.