Scanned a buddy's 98 C5 last night and his bank 2 LTFT was -100% across the board and not changing, bank 1 was normal, -3% or so, something reasonable. I cleared the LTFT's via VCM controls but it instantly went back to -100%.
STFT's both banks were normal looking and changing like normal. O2 readings both banks were normal looking, switching back and forth like normal. Only the bank 2 LTFT of -100% looks odd. Car is running great.
I can post a log tomorrow if needed, it's not on this computer.
What's causing this?