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    2009 Yukon SLT with Factory Tow Package Cooling Upgrade

    I have a 2009 Yukon 4wd SLT with Factory Tow Package, and am interested in upgrading cooling system to tow a 7000 travel trailer, which is within the heavy duty tow package for the year. Is an engine oil cooler and transmission cooler all that is needed?
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    2009 Yukon Needs New Headlights. What to Get?

    Hi, My headlight lenses are pretty bad, despite multiple attempts to polish out. I would like to try LED bulbs. I would like to keep something stock as far as housing, but are any brands any better than others? Any LED bulbs superior to others?
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    Low oil pressure at idle, pulling my hair out, looking for any and all options.

    Did making the change hurt your gas mileage to any great extent?
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    2007 Yukon help

    What state are you located? Might be a wheel speed sensor. They get bothered up over time, especially in the rust belt.
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    Engine Light on my 2009 Yukon

    P0175
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    Engine Light on my 2009 Yukon

    I should have screen shot the code before clearing it. The Yukon usually is on flat level roads in Virginia. Will give the code if it pops up again.
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    GMC Yukon XL 2500 pricing?

    I had one, used a quart of oil every 600 miles. 10-12mpg. Personally, I would not buy from anyone except the owner-seller. You can learn more about vehicle’s history.
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    Engine Light on my 2009 Yukon

    I am on a trip out West in my 2009 Yukon with 113K miles. The engine light came on and I scanned it and the code said the bank one was rich. I was up and down long grades here in South Dakota when it came on. Been running regular gas but put premium in this tank. I had replaced the spark...
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    100K Service Questions

    My rig has a limited slip rear, so I want additive .Guess I will find the 75W 90 with LS additive. I have not had any problems despite extended change intervals using Mobile 1 or QS UD, along with a Purolator filter Power steering fluid change? How much to do the job?
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    100K Service Questions

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    100K Service Questions

    I am at the auto parts store picking up things. Valvoline has this 75W-140 with limited slip additive, and had a GM 9985991 rating. Would I need additive if I buy the synthetic 75W-90? Is this a big deal?
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    100K Service Questions

    Thanks for the reply. With drive by wire, you cannot feel the stickiness of the throttle body. Had to replace a rear caliper that was sticking on a road trip from Virginia to Oregon. They did a brake flush then, along with a rear pad slap both sides. I bought front pads, so that is on the...
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    Just finished a ton of work...ask me anything

    How did you do the transfusion? Drain the pan, run it for a while. Drain the pan, run it for a while. Drain the pan, run it a while? Brakes, did the rotors need replacing ? Or just do a pad slap?
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    100K Service Questions

    Hi, I am making up a parts list for the upcoming 100K Service and am thinking about adding an external cooler while the transmission filter/filter are changed. Assuming I might be pulling a 7000 pound travel trailer through the Rockies, what size should I get? Here is the parts list...
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    External Transmission Oil Cooler for 2009 Yukon

    Hi, I have a 2009 Yukon with 97K miles that I occasionally used for trailering my 24ft Albemarle Cuddy Cabin with a tandem axle trailer. The Yukon, which I purchased new, came with the factory tow package, which I think only has an internal cooler in the radiator. I live in Virginia, and want...
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    Options for Upgrading 2009 Yukon SLT Headlights

    Hi, I have noticed that the Denali, as well as the newer models of the Yukon, have different headlight housings with LED lights. If I buy 2012-2014 Headlight housings, will it be plug and play? Have any of you had experience switching out the stock incandescent bulbs to LED's? Is there a...
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    2009 Yukon Rear Cigarette Lighter Plug, Trailer Connector Amp Rating

    Hi, Not sure I am in the right place, but with all of the high ampere amplifiers in vehicles today, I thought I would ask. I have a 2009 Yukon SLT with Tow Package, and have a separate winch battery in the rear to power a boat trailer Power Winch, and would like to be able to use the vehicle...
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    Towing and hitch

    My biggest complaint about the NNBS vs NBS full suze SUV, is the location of the receiver, which makes us who traded up have these ball mounts that they no longer use, while having to pay big money the the drop mounts. I have managed with a 6 inch drop on my 2009 Yukon, but sounds likebyours is...
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    Replace Transmission Cooler with TruCool 40k

    One thing I noticed once I traded my 2003 Suburban 2500 4wd with 8.1, besides gas mileage, was how much taller the diff was in my 2009 Yukon, 4.11 vs 3.42. I am getting 18 mpg calculated vs 11 mpg with the 8.1. Not sure what your Denali has, but if you take it easy, stay away from mountainous...
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    My 2011 Yukon Denali Totaled Sunday Evening

    He is probably like 40 percent of Americans who cannot cover $400 expense in an emergency. You cannot squeeze blood out of a turnip, so the saying goes. I was rear ended while stopped all alone at a traffic light in the middle lane in my immaculate 1985 El Camino Choo Choo SS by a woman...
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    How Rubber Flap Between Radiator and Air Cleaner Housing is Positioned

    Hi, It is new battery time for my 2009 GMC Yukon, and while removing the battery, I noticed this "L" shaped rubber flap that is attached with 2 clips, but the rest of the flap looked out of place. This flap is behind the headlight bulbs, but I have owned the truck since new and have not...

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