Originally Posted by
EyesofThunder
Was experimenting with the Dual Bank/Single Bank on my L29 454 today, no worky (I know, I have a dead right bank O2). But looking at the L30 (the 305), it is factory single bank and works (obviously or GM wouldn't have shipped it), but it also has 3rd O2 sensor checked too. I will experiment more tomorrow on it.
The other question is did GM do something like ground out the Bank 2 sensor input?
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