Problem with Chevy ECM downloads.(Unable to detect the vehicles diagnostics protocol)

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07-12-2018
Bill@HPTuners

Quote:

Originally Posted by rpmextreme

Any updates on this. I have 2 MPVI2s that both come up with Detect Protocol failed when trying to read a 05 GM 5.3 ECU 12589463. Both units have been fully updated and I ran Both the current Beta and latest software with no luck.

My MPVI original reads and writes just fine......

This problem requires a bit more attention for us to solve. Please open a support ticket so we can further assist you. That can be done here: https://support.hptuners.com/index.php?/Tickets/Submit
04-07-2019
JH7

I fixed my problem
08-09-2019
Yukon350

I just did the 0411 swap and ordered HPtuners to start tuning it. Unfortunately I have come across the same unable to connect issue. I raised a ticket, hopefully this can be resolved quickly.
08-15-2019
Pistolpetep250

How did you fix your problem? This just happened to me on a customers truck and now the ecm isnt being found and saying detect protocol failed.

Quote:

Originally Posted by jh7

i fixed my problem
08-16-2019
Yukon350

My issue is with the 0411 swap. Something happened to make the ODBII unable to be scanned. Will be trouble shhoting this weekend.
03-10-2020
C10_ustacould

We have a fresh L86 6.2L 8L90E swap in a '67 C10 truck and get this error message when trying to connect to scanner or editor. I opened a support ticket but was hoping to find out what the fix was here.