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    Possible starter problem on 2007 Tahoe?

    I am pretty sure my problem is the starter but I want some other opinions before replacing it. Yesterday I tried starting my 2007 Tahoe and there were no clicks or anything. battery was not completely dead because the lights and nav system worked fine. I hooked it up to jumpers and it started...
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    cleaned the throttle body and MAF and it didn't seem to help. I noticed that the misfire is much worse while the engine is cold. Once it warms up I get around 1 misfire every 5 seconds or so. My idle seems a little rough though even when misfires don't show up.
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    2007 Tahoe octane?

    So I realize running higher octane doesn't make sense unless compression is higher and you are experiencing preignition, but I was e-mailing Justin from Blackbear and he told me that the lowest octane he tunes for the 2007+ 5.3 is 89 and that I should be running 89 even while it is stock. The...
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    Yeah, if it was a random misfire on all cylinders I could see that. I planned on doing a MAF and throttle body cleaning soon anyway. Is there any procedure for relearning idle after cleaning the throttle body?
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    The odd thing is that I don't think it was misfiring before I ran a can of Techron through the system. I wonder if the Techron knocked some crud off in the fuel tank or lines and clogged up ones of my injectors.
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    yeah, it probably isn't enough to trip a code. I am just monitoring it with my scanner.
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    I just got it. I don't think I would call it a problem yet. Just me being picky. It misfires only at idle probably 4 times every 10 seconds.
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    Okay I swapped the coil and wires but I still get a misfire at idle on 3. Clogged injector maybe?
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    Another question. Does this engine have a serviceable PCV system? if so where is the valve?
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    Thanks, I have heard the Black Bear recommendation before. I will probably go with that.
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    Thanks, sorry :)
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    Just bought a 2007 Tahoe LTZ, have a few ?'s

    I look forward to contributing to this forum once I get to know the Tahoe a bit better. Feel free to answer any of my questions below. Thanks! 1. Tahoe has 120k on it and never ran E85. I hear you can run a tank through to clean out the fuel system? Is that going to clog stuff up like the...

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