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  1. D

    2009 SLT Yukon rough idle for 30 seconds on cold start

    Thank you. This and cleaning the MAF will be my next steps.
  2. D

    2009 SLT Yukon rough idle for 30 seconds on cold start

    I'm going to try this.
  3. D

    2009 SLT Yukon rough idle for 30 seconds on cold start

    Spark plugs new, and look perfect. Wiring new.
  4. D

    2009 SLT Yukon rough idle for 30 seconds on cold start

    Yes, I have and am not getting any codes at any time. Thank you!
  5. D

    2009 SLT Yukon rough idle for 30 seconds on cold start

    Thank you. Mine was always ready to go as soon as I touched the starter, up until a couple months ago.
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    2009 SLT Yukon rough idle for 30 seconds on cold start

    Thank you. I forgot to mention vacuum leak checked and OK. I'll take a look at the MAF and throttle body. That's a relatively easy and cheap thing to do. Thanks again.
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    2009 SLT Yukon rough idle for 30 seconds on cold start

    2009 Yukon Flex Fuel. I start it up and back out of my driveway. Idle is very rough and missing for less than 30 seconds. After that, it idles and drives fine until the next cold start the next morning. New plugs and wires. Injectors serviced. Really appreciate the help!
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    Fuel Pump dead at 4000 hrs on motor.

    No, it is an average of 20 mph, not 50. I have 153,000 at 3200 hours. Roughly a 47 mph average, probably pretty typical.
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    2017 Yukon Denali Head Lights are terrible

    I don't know about the 2017s, but I have a 2009. I think I could improve the lighting by taping two flashlights on the front fenders. A friend has a 2012 Acadia. It has twice the light.
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    2009 Tahoe LT thoughts

    I have a 2009 Yukon with 149,000 on the clock. Second owner since 2010. One small dash crack, 2 inches, front corner of passenger side dash airbag. Auto fold on mirrors no longer works. Lumbar on driver's side seat not working. Did minor suspension repair at 125,000 and brakes at 140,000...
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    P0308 Misfire Code while road tripping

    I had the same code. I decided it could also be a dirty injector. I ran two tanks of gas through with Techron added to each. The code went away and has not returned. Worked for me, that's all I know.
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    TPMS Problem - Battery? 2009 Yukon

    Just to follow up, I ended up driving into Discount Tire. They quoted me $60 per tire, parts and labor, using the VDO redi sensor. The total was about $200 less than the Chevy dealer, so I went for it. While doing the work, they found a screw in my LF and fixed that free. The sensors are...
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    TPMS Problem - Battery? 2009 Yukon

    Agreed. For sure, I wouldn't try any cheapo replacements. Given the way there are knockoffs for about everything, what is the best way to make sure it is genuine AC Delco and not just a knockoff duplicate even including the logo?
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    TPMS Problem - Battery? 2009 Yukon

    The pressure for the L front is dashes. All others read correctly. I agree that I'll replace all 4. Leaning toward just having the dealer do it, as opposed to buying the sensors and having Discount do them. My thinking is if I get them done at Discount and one or more won't program, then it...
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    TPMS Problem - Battery? 2009 Yukon

    The TPMS light is coming on indicating a problem with my left front. The tire and pressure are fine. The light was off and on for a month or two, but is now on solid. Given that the car is 10 years old, I'm guessing a battery problem. Are the batteries replaceable? Thanks for any advice.
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    Check engine light - cylinder 1 misfire

    2009 Yukon. Check engine light goes on and off, so I plugged into the OBD2, and used the Torque app on my Android phone. Came back that the #1 cylinder was misfiring. Chased that down and found the various possible causes, most of which involved possible wiring or plug problems. However, it...
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    Tahoe/Yukon Headlight Information Thread

    I "think" they are aimed correctly, but you might be right. I'll get out there and check that. Thanks!
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    Tahoe/Yukon Headlight Information Thread

    I suspect you are right that a lot of the negative reviews on Amazon are due to mishandling the bulbs.
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    Tahoe/Yukon Headlight Information Thread

    That is what I gathered by reading a ton of reviews of different bulbs on Amazon. Nice for a while, but they burn out quickly. Probably not doing that. I even thought of putting on a small bull bar to mount some decent driving lights. Maybe some Cibie Super Oscars? :-) Seriously, I can't...
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    Tahoe/Yukon Headlight Information Thread

    Thank you. I'll look into these.
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    Tahoe/Yukon Headlight Information Thread

    You know, I've read all the way through this thread, including the awesome pinned first posts. I am not a hobbyist, just a driver who drives at night in deer country. I simply need as much light to the distant sides of the road on high beam, so I can spot deer about to cross the road. Deer...
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    Tahoe/Yukon Headlight Information Thread

    Serge, simply outstanding, and will save me much time, money, and aggravation. I live in deer country and do want more light on the side of the road, about 100 to 200 yards out so that I can spot the deer about to cross the road, and hopefully slow down and avoid them. It appears that no...
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    Original Factory Headlights

    How did you feel about the light output of the Sylvania bulbs compared to the ones you removed?
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    $700 for rear tail light replacement???

    Ridiculous, but the same thing everywhere. My wife's BMW convertible has lost both tail lights about a year apart, $400 each. After reading this thread, I should have checked eBay, but didn't think of it.
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    Driver's mirror will not fold

    I've been looking. Will try this once I find one. Thanks.

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