Fuel trims at 49% bank one o2s read normal Bank 2 o2s both sensor one and two always show 0.00 [...] that 5 volt signal on pin 3 of harness at o2 sensor reads 5 volts key on engine off as soon as you start engine it goes to a pulsing 0.0 volts like a pcm groun...

FIX posted 7/28/2011

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