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    2008 6.0L O2 Sensor Issue P1153 (New O2 Upstream Passenger Sensor 2 Bank 1 wonky voltage)

    Hey all, Need some help as my inspection is due. I've been getting an intermittent P1153 code indicating my upstream O2 Upstream Passenger Sensor 2 Bank 1 was going out so I replaced it with a new AC Delco unit. After replacement I'm seeing the same issues and when I do a voltage scan it's...
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    Idle Oil Pressure Thoughts (Currently sitting at 20 PSI fully warm).

    Hey all, Just got back from my Chevrolet dealer who told me everything is within specifications for my 2008 Avalanche 6.0L. While the compression test came back perfect the Oil Gauge test showed something interesting. At the filter I'm getting 45 PSI at idle but by the time it reaches the top...
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    Looking for a Tune (Disable AFM and Raise Idle) near Philly

    Hey all, Does anyone have a recommendation for somewhere that can do a ECM Program / Tune (Disable AFM and Raise Idle) near Philly? I've spoken to 3 shops, and all are quoting the same cost as me buying a Diablo Tuner myself.
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    Uneven Idle is getting progressively worse but cannot find the cause (Fuel Pump / Injectors?)

    Hey all, I drive a 2008 Chevrolet Avalanche (Body has 150k Miles Engine has 40k Miles...AFM sure is great) 6.0 L L76 V8 (gasoline) with a GM 4L70 transmission. I have an issue where the truck's idle has been getting progressively worse over the last few months. Issue: When at a stop the idle...

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