O2 sensor issues with LT headers?

[JJKNIGHT]

I'm having this same issue with my StainlessWorks Headers, Both Downstreams are deleted, but my tuner said I have a lazy Bank2S1 sensor, so I'm getting two brand new ones Wednesday, but where is this fuse at?

Mine was running fine and then it popped something and it changed it instantly into LIMP mode... HELP!!

UPDATE:

Fuses were fine. Bank A and B. Both 15A. Had my local dealer (SMART CHEVY) order and swap both upstream sensors and now she purrs.