Recent content by dkad260

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    Running lean

    I'm not 100% but generally at some point the tank needs to hold a vacuum....so a full-time vent is not good. Not sure on the GMT-900 but usually after start, the PCM will close the vent solenoid I believe and pull a vacuum and test the tank...if it will not hold a certain vacuum for a set length...
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    Running lean

    I went back to look through this thread, and somehow (dumb thumbs) I missed page 2...lol. Makes more sense now with all that info. GM's do tend to be particular to O2 sensors, but also plugs....they like the OE iridium. Sorry if I misread any of this, but IME, I don't believe you should have...
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    Running lean

    No worries, I know what you mean. Have you looked into your tune with regards to the PE (Power Enrichment) table? Under boost, I believe this is where the tune would be adding fuel. I don't know enough about it to give advice but if you haven't had someone check it out I feel this is what you...
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    lift gate on my 2011 Tahoe wont open

    Check the overhead console switch isn't turned off. Mine would start to open then shut, but not 1/4 of the way. Otherwise I agree with the struts. Don't get the cheap ones, get the Strong Arm or something mainstream. I tried the cheap strut and had to cut it off as the socket retainer would...
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    Tahoe 2007 starts rough and smells like gasoline

    How many miles on the plugs? Are they OE AC Delco or aftermarket?
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    Engine dies at slow speeds inconsistently

    Pull the air filter cover and check for any obstruction like a nest.... doubtful but worth a look. Also clean the MAF just to be sure.
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    Brake pedal squeal when pressed hard

    Glad to hear it's resolved. Not to jinx you, but if the rears start making noise, check the fitment of the pads in the bracket. My last pair of Akebono rear pads had a loose fit, Akebono replaced them and the new pads squealed as well. The tabs of the pads were slightly smaller and rattled in...
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    Instrument cluster lights turn off when map light is turned on

    Ahh, my bad... well thank you both.:cheers:
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    Running lean

    Sorry, deleted for wrong thread. My bad.
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    Instrument cluster lights turn off when map light is turned on

    Looks to be the driver's side visor causing the issue, I know @mikez71 mentioned the visor in the beginning, what threw me off was the passenger visor had similiar readings. I moved the visor to the side to block the sun and extended it, that night I noticed the flickering. I replaced the fuse...
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    Running lean

    I don't know what these are supposed to pull, but I would assume 18-21 inHg. Can you elaborate more on the history....how long have you owned it, and after you purchased it, what have you done to it and what if any problems were present at time of purchase and did the problems start before or...
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    Running lean

    What is your vacuum at idle, using a physical gauge, also is the needle steady? Have you done a leakdown test of the injectors? Verified fuel pressure? Are the O2 sensors AC Delco or aftermarket? Miles on plugs, are they AC Delco? Just a few questions to help try to diagnose.
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    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Hmm..ok. Well, other than the possible suspected lack of airflow, I know you didn't ask this but, perhaps at that throttle setting, load, RPM pulling that grade...that this could be a power enrichment issue? Maybe it was just running a tad lean or could benefit from some extra fuel to cool...
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    I have a stupid question...

    Yeah, definitely not in mine.
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    I have a stupid question...

    I have the backup sensors but no red lights inside on my 2012 Denali. Could the fact I have the backup camera eliminate the 3 red lights inside?
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