battery light flashing after o/s upgrade

[whackem04]

I upgraded from 09379910 to 12212156 and now the battery light flashes and i get a dtc P1638? I checked the system settings and both F and L are enabled. Any help would be appreciated?

[whackem04]

nevermind I found it!
http://www.ls1truck.com/forums/pcm-tuning-diagnostics/2823-no-more-flashing-battery-light.html

[joecar]

What are your settings for those in G1207...?