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    Need advice on prepping my Yukon's oil pan gasket

    My NNBS Yukon XL Denali beat me up while I was removing the oil pan. Much more involved than I had expected. Have a bloody eye to prove it. So I'm in intermission mode, cleaning the pan and engine mounting surface. The replacement gasket I purchased is a Felpro Part#: 30693R. I has an...
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    Trying to stiffen up rear axle movement

    It was suggested by someone I know to upgrade the rear stabilizer bar on my 08 Yukon XL Denali to something aftermarket (ie larger/beefier). I do tow a 6000 lb trailer so I'm looking for suggestions to help with mitigate any rear end movement. I've read Eibach and Hellwig have products that...
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    Tow/haul mode with my 6 speed Yukon Denali

    I'm relatively new to towing with my 2008 Yukon XL Denali and I had a question regarding towing my travel trailer. I know the purpose of the tow/haul option on the gear selector. When active, it changes shift points, stays in a lower gear longer, and downshifts quicker when slowing down...
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    Rear air shock boot shredded...

    I own a 2008 Yukon XL Denali. It has rear leveling air suspension. The driver's rear shock was replaced by the GMC dealership I bought it from in July 2015. I replaced the passenger side myself 1 week after I purchased the truck last July. So both are relatively new. Both are OEM. Only...
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    Need help with squating on a 2008 XL Denali's rear while towing

    My 08 Yukon Denali XL's suspension is working as designed while towing light loads. However, with my new travel trailer hooked up properly to my weight distribution hitch, the trailer is level but the truck still seems to squat a few inches. Tongue weight is around 800 lbs. Rear air shocks...
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    LT tire recommendations for my tow vehicle.

    I'm in the market for new tires for my 2008 Yukon XL Denali. Would like to get a few opinions on a good set of rubbers that have limit sidewall flex but aren't abusive to passengers when the truck is unhitched. I've been reading about Michelin LTX M/S2 (load and speed is 113H). They are more...
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    Oil leak from engine block off gasket...need help.

    After noticing a small amount of oil on my garage floor underneath my 2008 Yukon Denali 6.2L, I took it into the dealership to get checked out. First time I would use my extended, no-deductible service contract. Turns out, it's coming from the block off gasket up near the oil pan. The...
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    Water inside the headlight assembly on my 2008 Yukon Denaki

    Is it a known problem to have leaking headlight assemblies on the NNBS Yukons? The passenger side always has water droplets and condensation on the inside. The driver side assembly is bone dry. Any members repair their leaking headlights? Or should I just buy a new one? If I do buy new...
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    Best place to mount a brake controller

    I just purchased and wired a Prodigy 3 brake controller on my 2008 Yukon XL Denali. I'm just curious where everyone is mounting their units. It seems like my right shin will always be hitting it. I'm 6'2". I have yet to drill any holes. The picture below is what I see most online...
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    Some advice on transmission pan removal for the 6.2L

    So, I've been hard a work on my 2008 Yukon XL Denali getting it into tip top shape. I've changed out all the fluids including the front and rear differentials, transfer case, transmission fluid, motor oil, brake fluid, and power steering fluid. In regards to my transmission fluid change...
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    Attempting to purchase OEM brake pads from ACDelco

    I'm coming across at least 3 part numbers for front OE brake pads on my 2008 Yukon XL Denali AWD. 1. ACDelco 171-1074 2. ACDelco 171-1007 3. ACDelco 171-0975 Can anyone direct me to the proper part number? Non-OEM brands seem to have just 1 applicable part number. I'm trying to replace my...
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    Are all dexron IV brands created equal?

    Are all dexron VI brands created equal? I just purchased an 08 Yukon XL Denali with 80k miles. It was a grocery getter and not a tow vehicle during the first 7 years of its life. I'm going to do a transmission filter and fluid change out soon. Do I stick with the oem fluid by ACDelco? Or...
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    Options for Bluetooth in my 2008 Yukon XL Denali

    Last week, I purchased an 08 Yukon XL Denali with navigation. After reading a few forums on GM's OEM radios, I recently realized that bluetooth connectivity wasn't offered on their trucks until the 2009 model year...only a subpar Onstar pay-for-service interface. I really want bluetooth...
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    Winter wheel recommendations

    Just acquired a "new-to-me" 2008 Yukon XL Denali with 20 inch chrome wheels. I'm attempting to get ahead start on the winter driving season and would like to put together a nice snow tire/wheel combo. I'm looking for recommendations on which size works best for the Denali's capabilities on...

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