Diesel GM 16147609 TCM Code BACX ??

[Contract_Pilot]

GM 16147609 TCM Code BACX

Like to know how to

change shift points,
the Diesel engine speed sensor how many pulses etc how can I pick it up from an older late 70's 454 gas engine.

Anyone have bench wiring so I can bench test this TCM?


Thanks.

[brian617]

As far as I know there is zero support for that TCM, barely any FREE support for the PCM in the EFI diesels that followed.

[ScottP]

TunerCat supports the 16147609 TCM. Its mask $A6. See the listing here:

http://www.tunercat.com/tnr_desc/ecm_sup.html

So with the usual chip reading and burning tools, you can recalibrate it.

-Scott

[brian617]

That's interesting, thanks. Its a shame those TCMs are so hard to find, I have a manual pump 6.5 that needs one.

I managed to reprogram the shift points and TCC lockup with the 6.5 PCM, but there are underlying issues with the manual pump conversion and TPS problems.

[Contract_Pilot]

Will Locate my DIP Adapter for my device programmer and dump the Eprom.. Been a long time since i played with DIP Packages mostly ICSP..

[Contract_Pilot]

Cracked Open the TCU..

[THEFERMANATOR]

Most that I've seen who even swapped one in eventually ditched it and went with an opti-shift. And if I'm not mistaken, that TCM will only work with the 91-93 4l80e that didn't use a vssb for the speedo(both speed sensors went straight to the controller, even 4x4's had a output reluctor 7nlike 94+), only worked with the early pcs that required a "cleaning cycle", and didn't work well with 4x4's in 4low. These are all reason's why I've seen people ditch them on diesel's(I'm on a diesel forum with mostly 6.5's/6.2's). I know my neighbor asked me to look into helping him swap a 4l80e into his 88, and it looks like we'll be going with a 7427 in it.