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  1. E

    What should the Rear Sway Bar height be set at?

    That is interesting. The rear of my 2011 Yukon Denali XL 6.2 with the towing package had no rear sway bar from the factory. I purchased it new. I bought a Helwig for the rear when I upgraded the stock front sway to Helwig. Made a noticeable difference in handling.
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    PPV brake lights inop

    How about wire harness connections. Those plugs may be different with a police package. It would be good to look at the wiring diagram for both to see if the inputs are the same. I bet that is your problem.
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    Dear Mr Fless

    I almost won the 47th annual turd trophy once. it was not on this website however. It was in a Victoria's Secret shop.
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    Need opinion — upcoming road trip

    I would have done the same thing as you did given the situation. However, I continued thinking through this by adding some other variables that changed my mind. Here's why. I was looking at the same questions with The Queen's 200,000 mile 2011 Yukon Denali XL 6.2 I bought new. Always...
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    Hello, from MA

    Texas here. Home of the 85 mph speed limit. Fort Worth is where the Wild West begins. Dallas is where the east peters out. Houston and Starbase are heavy into oil and space launches. The drive from Orange to El Paso is 870 miles east/west. South Padre Island to Texline is 904 miles...
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    Im old--no haters please I need BRAKE INFO and have an idea for this site

    JosephGarcia suggested asking specific questions. I think you have enough info here to do that. Do it by text or email for hard tracking responses.
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    High mileage 6.2

    Just sold my 2011 6.2 Yukon Denali. 208,000 miles. Never the first bit of trouble, but had I kept it I would have done the lifters (never a problem, but borrowed time), water pump, fuel pump, belts, hoses, plugs and wires, fluids (transmission and all wheel drive items), hard check of front...
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    Yukon XL rear shock

    I had a 2011 Yukon Denali with factory adjustable shocks driven by an air compressor. They leveled out quickly after loading them. Never had to replace the shocks, but the compressor ran out of breath at about 150,000 miles. My 48 years of experience tells me that if you begin experimenting...
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    How to easily change spark plug for cylinder #8 in 10 minutes, no hassle!

    Techron is the best stuff. There are plenty of YouTubes out there on those products. i have direct experience with leaky injectors on my 6.2 CTS V at 45,000 miles. On occasion I would start it up and blue smoke literally enveloped it. It was embarrassing. My mechanic gave me an article in a...
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    Hello From California

    I like your choices for driving. Newer trucks are too complicated.
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    GM must be doing well

    For what it is worth, I miss my 2011 Yukon Denali XL. It had 208,000 miles but was still in great condition. A rock chip here and there, but that was it. I still hated those 2011 headlights though. I had to keep checking to see if they were turned on or not. My 2023 was just too dam...
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    New to the forum, We just purchased a 2017 Denali with 19k miles so far we love it.

    Tell us the issue on torque convertors.
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    Fuel Injection Cleaning Kit?

    Lake Speed is correct. Techron is the only gas additive that works. In your case you might try a can a tank for about 5 tanks of premium. Solved my injector problems on my 2010 CTS V. All of a sudden it looked like a fog truck on occasion at 40,000 miles when I would start it. Sold it at...
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    Transmission or slip yoke?

    That description is classic of a slip yoke needing lubricating. The giveaway was "If I accelerate lightly from a stop or I ease the brakes to a complete stop, I don't have the issue. It's only when I'm a bit more aggressive with either that I get the symptom." Lubricate the slip yokes. If...
  15. E

    [SOLVED] HELP!! Weird flute like whistle coming from engine bay.

    If that doesn't work you might add some bass and a steel guitar.
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    How reliable are the 2011 Yukon Denalis?

    2011 Yukon Denali XL - 203,000 miles. Replaced rear load leveling MagnaRides and compressor. Replaced two broken front driver side exhaust manifold bolts (known issue), 6.2 performed flawlessly even with the screwy lifters, and we could pass cars on the rural roads with ease. V4/V8? But it...
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    HELP—2018 Yukon rear pads/rotors DESTROYED after dealer rotation

    You said in your initial post that a Yukon SLT is front wheel drive. Wrong. It might be 4 wheel, or all wheel drive, but not front drive. Rear brakes should not wear out before the front brakes unless you have been towing, then maybe. At 92,000 miles they may need replacement. Do not cut...
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    Aftermarket "Authoritative" Horns -- What Experience/Recommendations Do You Have?

    This is a dead serious recommendation. It is no dooky and cheap. Screw air horns. Just add a couple of 6V horns from an old 6V GM car or truck. Or any 6v horn from anything. I suggest Cadillac horns. DO NOT wire in series. Each goes direct to power just as they are wired now. They will...
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    Friends and Family (supplier) discount vs. invoice

    Don't be misled by the headline. This is for all potential buyers. It goes through the purchase price, dealer incentives, and fees that add to the bottom line price. It is well done, particularly going through the fees and dealer incentives. Extended warranties are also a pricey option. I...
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    SC vs Full Engine Build

    I don't know how old you are, but when I turned 65 I finally figured out that there was no way I would be using more than 420 hp/tq, so I uncomplicated my life and saved money. Wish I had done it 30 years earlier. Still have a 18 Z06 and 74 455 Cutlass to go.
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    What Oil for a 6.2 that passes the PICO test?

    Much can be learned on oil and filter performance on youtube from Project Farm or The Motor Oil Geek. Oh, I forgot. My engine builder spec'd 20/50 on my warmed up Olds 455. It uses no oil either, but that is a completely different engine build than the later model motors above. I could...
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    What Oil for a 6.2 that passes the PICO test?

    After putting an average of 200,000 plus miles on three different cars: 1990 Taurus SHO (300,000+ miles) and 2010 Cadillac V 556/551 performance cars, and and a 2011 GMC Yukon 6.2, changing Amsoil filters every 5,000 miles and Amsoil every 10,000 miles, none used any oil between changes. It was...
  23. E

    Totaled Cosmetic Only - What to do?!!

    Kill it. Take your licks. It will hurt. But it will be a bear to get fixed right. Cutting into a roof? Salvage title? Insurance concerns mentioned earlier? Get another with similar or less mileage. You will probably end up updating it too. But face it. Repairing cars that require roof...
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    6.2 engine replacement Yukon Denali please share your experience

    What is the definition of an active suspension? I had a 2011 yukon denali xl with the MagnaRides front and rear, with air leveling on the back. Rode like a dream its entire life. I did need a compressor at about 175,000 miles. Otherwise no changes at 203,000 miles. It had a solid rear axle...
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    2012 suburban disappointment

    You are complaining about two things, both of which are known problems. You did not give mileage, or else I blew by it. I'm guessing lots of miles on it. You need to expect that stuff to happen. They are common to these trucks. You should have done due diligence. It might have taken 10...

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