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Old 04-26-2009, 05:25 PM   #3
bwood
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Join Date: Jan 2003
Location: Denison, Texas
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Re: Few problems with an 03 tahoe z71

Quote:
Originally Posted by silky View Post
Bank 1 s2 = NA stft (weird?), and volts are pegged at .075 (cycles on when on the throttle, pegged at idle)

Bank 2 s2 = NA stft (weird again?), and volts pegged at .0730 (cycles on when on the throttle, pegged at idle)
I do not have any experience reading live data, but I wonder if this has to do with the actual lean issue? Or if the truck is ignoring them due to the existing CEL? Just guesses. Also give you gas cap a check, it also is part of the EVAP system.
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