How to use VXDIAG VCX NANO reflash GM HPCM2 module?

VXDIAG VCX NANO Possible to reflash GM HPCM2 module?
Yes. Some of vxdiagshop.com customers have tested and worked no issue.


Working experience:
What you need:
A vxdiag vcx nano for gm interface
SPS subscription

Feedback 1: 
You need the new SPS Vehicle Programming (Basic) subscription. You can buy a subscription from acdelco will do just as fine, and it's 40USD for 2 years. Be sure to select Opel/Vauxhall at the top and double-check immediately before paying.

I just installed my defeat plug after my old sensor had failed, then used the VCX Nano and SPS to reprogram the HPCM2 in order to clear the SHVCS code.
Did a daily erase of the POAA6/P1fff messages until the defeat plug arrived, installed WOT Defeat Plug, programmed HPCM2 with a VCX Nano via the ACDelco TDS website (2 day subscription) then hit the Erase Faults button after programming.
Done ... no messages ... charging Normal.
For those more technically inclined or without dealer support, the VCX Nano needs firmware updates via VXDIAG's VCX Manager to be used as a J2534 pass-through programmer. Windows needs a Java update and the TDS website installs software before you get started. After that ... it's a 10 minute job!


Feedback 2:
Yes, with a standard (non-enhanced) tis2web account you can use SPS to reprogram the HPCM2 module and clear the locked fault code.
I used a VXDIAG VCX Nano dongle, so with the cost of that, joining fee for the GM portal, plus 2x 1-hour subscriptions (I didn't realise the first hour I bought would start immediately - I didn't have the dongle at that point) cost me 170€ and saved me a 6-hour round trip plus probably a hotel for the night plus whatever the main dealer charged for the reprogram.  My Ampera is charging once more.