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Hummer H3For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.
You need a scanner that will scan Generator Battery Control Module (GBCM)
Whatever, I will guess the code B1390 and/or B1492?
Test at Under Hood Fuse Block (UHFB) fuse 32. Test at C125 terminal 16 Orange wire.
Trace wire from C125 to GBCM terminal C, look for open wire.
i am using an BT Autel scanner with GM package and getting a B1390 error code. In live mode My battery voltage signal zero. I have yet to remove the fuse block as I’m not sure if it’s above my skill level? Screenshot of GBCM results in live view
My battery voltage signal zero. I have yet to remove the fuse block as I’m not sure if it’s above my skill level?
i am using an BT Autel scanner with GM package and getting a B1390 error code. In live mode My battery voltage signal zero. I have yet to remove the fuse block as I’m not sure if it’s above my skill level? Screenshot of GBCM results in live view
My battery voltage signal zero. I have yet to remove the fuse block as I’m not sure if it’s above my skill level?
thank you for your reply, we figured it out . It was a missing fuse under the hood
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